Updated on 2024/07/16

写真a

 
KAWADA,Shohei
 
Organization
Faculty of Engineering Science Associate Professor
Title
Associate Professor
Profile

 

地球温暖化を始めとして環境保護の動きがより一層活発化しています。2019年のCOP25にて125か国・1地域が2050年までにカーボンニュートラルを達成する野心的な目標を掲げました。この時、日本や米国、中国などは声明を出しませんでしたが、2021年のCOP26で日本と米国は2050年、中国は2060年にカーボンニュートラル達成を目指すことを表明しました。

メディア等では、電化や水素化、二酸化炭素吸収技術、再生可能エネルギーの利用がフォーカスされています。これらの技術にはトライボロジー技術が基盤を担う部分が多数あります。例えば、電化では電気自動車の歯車が高速回転することによる疲労破壊、転がり軸受の電食が代表的です。水素化では、圧縮機等でシール部分において摺動により水素がリークしない必要があります。したがって、石油・石炭に代わるクリーンなエネルギーを安定に利用するにはトライボロジーの技術が重要であることは自明であるといえます。

一方で、これらの技術は2050年までにどの程度実現可能か見通せない状況であります。そこで既存機械システムにおける省エネも欠かせない技術です。トライボロジー分野において、摩擦係数を減らすことは直接的にエネルギー効率向上に寄与していますが、実際には産学官における長年の弛まぬ努力によりこれ以上の摩擦低減は厳しい状況である摺動部も数多く存在します。また、摩擦が低減したとしても、わずか0.01の摩擦係数低減ではエネルギー消費から考えるとインパクトは薄いです。そこで、従来の潤滑剤開発や材料開発とは異なる摩擦を制御する潤滑システムの構築を目指しています。具体的には、摩擦表面に電位を与えることで、潤滑剤の吸着構造を制御し、低摩擦かつ安定な摩擦状態の維持を目指しています。このシステムを構築することに成功した場合、吸着膜が脱離するような高温環境でも安定な吸着膜形成が見込まれること、水を主体とした潤滑油の利用が可能などが期待できます。また、摩耗も抑制することから製品寿命が延長され、LCA(ライフサイクルアセスメント)評価としてもカーボンニュートラルに貢献できると考えられます。摩耗に関連する研究として、摩耗の抑制だけではなく、自己修復やリサイクルといった関連で摩擦材料の開発を行っています。 

以上の研究は基礎研究・可能性検証に留まっています。応用研究としては、自動車等の機械システム向けにイオン液体の潤滑油添加剤の開発を行っています。現在ではイオン液体単体においては既存のエンジンオイルよりも低摩擦を示す物質群を見出すことに成功しました。また、宇宙観光・旅行市場の急激な成長に切り込むべく、宇宙用潤滑油添加剤としての開発も行っています。これも既存宇宙用潤滑剤より低摩擦を示すイオン液体群を見出しております。また、前述した摩擦制御を行うことで、摺動部におけるトラブルを回避することができ安全性を担保することができると期待できます。

一方で、エンジニアという観点から離れてサイエンスの観点から、固体表面上の水和構造の解析を行っています。もちろん、得られた結果から、潤滑油に水が混入した場合、水潤滑機械システムの構築など産業応用へも期待ができます。

また、大学教員は教育者でもあります。講義における教育や研究室に配属された学生の研究指導は言うまでもありませんが、トライボロジーを身近に感じる教育を試みている最中です。小中高生向けはもちろん、トライボロジーに触れたことのない大人・社会人への教育活動も非常に重要と感じています。現在では、VRやメタバースといった分野も加速度的に成長しており、これを活用できるのではと考えています。VRにおいてはリアリティさが向上していますが、触覚を利用することでさらにリアルに近づくと考えられます。例えば、材料を変更したことにより滑る距離が変わることが、”動画”ではなく”目の前”で認識していると頭に残りやすいと思います。実際にVRChatにてこれを行っているトライボロジストがいます。私は、実際にVRセットとしてキットを配り、外部電場等で摩擦係数が変わることを”実際に手を動かして”感じることが将来的にできると期待しております。

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Degree

  • Ph. D. ( 2018.3 )

Research Interests

  • 水和構造

  • トライボロジー

  • 表面科学

  • 摩擦制御

  • 固液界面

  • Ionic Liquids

  • Lubricant

  • Electric Double Layer

  • In-situ Observation

  • Friction

  • Color Contact Lens

  • Lubricant Additives

  • Grease

  • Swallowing

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Design engineering

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine elements and tribology

  • Informatics / Mechanics and mechatronics

  • Nanotechnology/Materials / Nanomaterials

Education

  • Tokyo University of Science   Graduate School, Division of Engineering   Mechanical Engineering

    - 2018

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    Country: Japan

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  • Tokyo University of Science   Faculty of Engineering   Mechanical Engineering

    - 2013

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    Country: Japan

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Research History

  • Tokyo University of Science   Organization for Research Advancement Research Institute for Science and Technology

    2023.4

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  • Kansai University   Faculty of Engineering Science Department of Mechanical Engineering   Associate Professor

    2023.4

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  • Kansai University   Faculty of Engineering Science Department of Mechanical Engineering   Assistant Professor

    2021.4 - 2023.3

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  • Tokyo University of Science   Organization for Research Advancement Research Institute for Science and Technology

    2021.4 - 2023.3

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  • Tokyo University of Science   Mechanical Engineering   Assistant Professor

    2018.4 - 2021.3

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  • JSPS Research Fellowship for Young Scientists DC1   Research fellow for Young Scientists

    2015.4 - 2018.3

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Professional Memberships

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Committee Memberships

  • The 5th Japan-Taiwan Tribology Symposium 2023   Organizer  

    2023.8 - 2023.9   

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  • 日本トライボロジー学会 学会指定研究会   カーボンニュートラルに寄与するトライボロジー技術研究会 幹事  

    2023.6 - 2026.5   

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    Committee type:Academic society

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  • 日本トライボロジー学会   ITC Fukuoka 2023 実行委員  

    2022.7 - Present   

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    Committee type:Academic society

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  • 日本トライボロジー学会   トライボロジー会議春東京 実行委員  

    2022.6 - Present   

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    Committee type:Academic society

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  • 日本トライボロジー学会   秋の学校実行委員  

    2022.6 - Present   

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    Committee type:Academic society

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  • 日本トライボロジー学会   教育講習委員会  

    2022.6 - Present   

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    Committee type:Academic society

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  • Tribology Letters   Tribology Letters Early Career Editorial Board  

    2021.9 - 2024.8   

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    Committee type:Academic society

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  • 日本トライボロジー学会   日本トライボロジー学会・編集委員  

    2019.6 - 2021.5   

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  • 日本トライボロジー学会   日本トライボロジー学会・編集委員 校閲幹事  

    2019.6 - 2020.5   

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  • 日本トライボロジー学会   日本トライボロジー学会・編集出版委員  

    2018.6 - 2019.5   

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  • 日本トライボロジー学会   Japan-Taiwan Tribology Symposium 2017 実行委員  

    2017.8 - 2018.1   

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  • サステイナブルトライボロジー会議2017奄美大島   実行委員  

    2017.8 - 2018.1   

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  • 日本機械学会   関東支部 学生委員  

    2014.4 - 2015.3   

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  • 日本機械学会   関東支部 学生委員  

    2013.4 - 2014.3   

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Papers

  • Tribofilm Formation and Friction Reduction Performance on Laser-Textured Surface with Micro-Grooved Structures Reviewed

    Qianru Li, Renguo Lu, Hiroshi Tani, Shouhei Kawada, Shinji Koganezawa, Xujun Liu, Peihong Cong

    Lubricants   12, 3, 91   2024.3

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  • Study on static and dynamic characteristics of water-lubricated hydrostatic thrust bearings – Effect of feed hole inlet shape on bearing characteristics Reviewed

    Hidetoshi Ueda, Mitsuhiro Saito, Yusuke Kawamura, Shouhei Kawada, Masaaki Miyatake

    Tribology International   191, 109127   2024.3

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  • Ionic Liquid and PVDF Composite Films for Triboelectric Nanogenerator

    Hiroshi Tani, Yangwei Zhu, Shouhei Kawada, Renguo Lu, Shinji Koganezawa

    2023 IEEE 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)   2023.12

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    Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

    DOI: 10.1109/powermems59329.2023.10417445

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  • Development of Non-Contact Floating Mechanism Utilizing Squeeze Film Levitation under Vacuum Environment Reviewed

    Ryota Ogawa, Taiki Ito, Shouhei Kawada, Masaaki Miyatake, Cristinel Mares, Tadeusz Stolarski, Shigeka Yoshimoto

    Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology   237, 12,2224-2229   2023.12

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  • Improvement of Wear Resistance of High-Strength Brass by Friction Stir Processing―Effect of Surface Processing Method on an FSP Applied Surface― Reviewed

    Masaya Hirukawa, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki

    Tribology Online   18 (6) 417-423   2023.10

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  • Feasibility Study of Reduction in Sound-Pressure-Induced Vibration in Hard Disk Drives Using Adaptive Feed-Forward Control

    Shinji, Kensei Funai, Hiroshi Tani, Renguo Lu, Shouhei Kawada

    IEEE Transactions on Magnetics   59, 11, 8600905   2023.10

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  • Effect of Humidity on Head Smear Generation in Head-Assisted Magnetic Recording Reviewed

    Hiroshi Tani, Hiroshi Kurafuji, Norio Tagawa, Shouhei Kawada, Renguo Lu, Shinji Koganezawa

    IEEE Transactions on Magnetics   59, 11, 3200905   2023.10

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  • Effects of Relative Humidity on Lubricating Properties of Ionic Liquids Reviewed

    Shouhei Kawada, Shunsuke Tanji, Jyo Kobayashi, Kaisei Sato, Masaaki Miyatake, Shinya Sasaki

    e-Journal of Surface Science and Nanotechnology   2023.9

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  • Friction Manipulation of Ionic Liquids under Boundary Lubrication by Controlling the Surface Potential Reviewed

    Shunsuke Tanji, Kaisei Sato, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki

    Tribology Online   18, 5, 232-238   2023.8

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  • Tribological Performance of Natural Resin Urushi Containing Graphite under Dry and Water Lubricated Conditions Reviewed

    Shu Sasaki, Akinori Sakai, Yasuyuki Nagata, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki, Shigeka Yoshimoto

    Tribology Online   18, 5, 249-254   2023.8

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  • The Influence of Electric Current on the Friction Behavior of Lubricant Molecules Reviewed

    Renguo Lu, Shouhei Kawada, Hiroshi Tani, Shinji Koganezawa

    Tribology Online   18, 3, 83-90   2023.7

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  • Effects of Oxygen on Smear Formation in Heat Assisted Magnetic Recording System Reviewed

    K. Yakata, H. Kurafuji, H. Tani, R. Lu, S. Koganezawa, S. Kawada, N. Tagawa

    Tribology Online   17, 4, 348-355   2022.12

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  • Young’s Modulus of Fatty Acid Adsorption Films on Si Surface Measured Using Ar Gas Cluster Ion Beams Reviewed

    Hiroshi Tani, Norio Tagawa, Shouhei Kawada, Renguo Lu, Shinji Koganezawa

    Tribology Online   17, 2, 110-117 ( 2 )   110 - 117   2022.6

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    Publishing type:Research paper (scientific journal)   Publisher:Japanese Society of Tribologists  

    DOI: 10.2474/trol.17.110

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  • Numerical study on the rotational and machining accuracy of an end-milling process with spindles supported by aerostatic bearings Reviewed

    Keita Shimada, Daisuke Wakabayashi, Yuma Shimoyakawa, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology   2022.5

  • ホウ素含有イオン液体による摩擦低減効果 Reviewed

    渡邉保奈美, 小野寺康, 佐藤魁星, 川田将平, 佐々木信也

    トライボロジスト   67 ( 3 )   191 - 200   2022.3

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    DOI: 10.18914/tribologist.21-00014

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  • Development of aerostatic porous bearings manufactured using metal 3D printing technology Reviewed

    Ryo Sadahiro, Syota Nakayama, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki, Shigeka Yoshimoto

    Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology   2021.12

  • Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid Reviewed

    Sato Kaisei, Okubo Hikaru, Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    TRIBOLOGY ONLINE   16, 3, 178-191 ( 3 )   178 - 191   2021.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JAPAN SOC TRIBOLOGISTS  

    Ionic liquids (ILs) are being considered as novel lubricant additives to improve the friction and anti-wear characteristics of sliding surfaces. Because ILs consist of only cations and anions, their physical and chemical properties can be easily tailored by modifying their combination. These features enable to design of specific ILs for a given tribological system. However, there are few reports on the effect of ILs used as lubricant additives on the friction and anti-wear characteristics of sliding surfaces. Moreover, it is necessary to investigate the synergism between ILs and other lubricant additives to achieve high practical efficiency. Therefore, in this study, two ILs with different cations but similar anions were used in combination with an anti-wear additive, zinc dialkyldithiophosphate (ZDDP), and the resultant wear and friction characteristics of the worn surfaces were analyzed. We found that the tribological performance under steel/steel sliding conditions was dependent on the chemical composition of the ILs. In addition, mixed ZDDP and IL solutions exhibited lower friction and wear when compared to ZDDP alone. It is considered that the excellent lubrication and frictional performance observed with the mixed lubricant solutions is due to the formation of tribofilms comprising of ZDDP and IL on the sliding surface.

    DOI: 10.2474/trol.16.178

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  • In-situ observation of tribo-decomposition behavior of ionic liquids composed of phosphonium-cation and cyano-anion using quadrupole mass spectrometer Reviewed

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    TRIBOLOGY INTERNATIONAL   153,,-   2021.1

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  • The Gas Squeeze Film Characteristics of Acoustic Levitation with Various Excitation Disc Shapes Based on the Modified Reynolds Equation Reviewed

    Bin Wei, Masaaki Miyatake, Shouhei Kawada and Shigeka Yoshimoto

    TRIBOLOGY TRANSACTIONS   ,,-   2020.3

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  • Lubricating Properties of Cyano-Based Ionic Liquids against Tetrahedral Amorphous Carbon Film Reviewed International journal

    Shouhei Kawada, Hikaru Okubo, Seiya Watanabe, Chiharu Tadokoro, Ryo Tsuboi, Shinya Sasaki, Masaaki Miyatake

    Coatings   10 ( 2 )   153 - 169   2020.2

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    © 2020 by the authors. Ionic liquids have unique characteristics, which render them ideal candidates as new base oils or additives. In particular, there are great expectations from the combination of diamond-like carbon and cyano-based ionic liquids. Lubricating properties of cyano-based ionic liquids have been studied on specific tetrahedral amorphous carbon (ta-C) films. After lubrication, ta-C film/ta-C film contact interface exhibits exceedingly low friction. Therefore, it is necessary to understand this low friction phenomenon. The current study evaluated the lubricating mechanism of cyano-based ionic liquids against ta-C films. 1-Butyl-3-methylimidazolium dicyanamide (BMIM)(DCN) and 1-butyl-3-methylimidazolium tricyanomethane (BMIM)(TCC) were used as lubricants, with the latter exhibiting low friction coefficient of 0.03. Steel cylinders and disks with ta-C films were used as test specimens. Raman spectroscopy, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and thermogravimetric analysis (TGA) helped us understand the mechanism of low friction induced by (BMIM)(TCC). Graphitization of the ta-C film at high temperatures might have caused the reduction in friction between the films. Similarly, anion adsorption on the worn surface at high temperatures also led to reduced friction. However, the TGA result showed a different trend than that of the sliding test. Our results indicate that the cyano-based ionic liquids underwent tribo-decomposition at low temperatures. Further, a minimum temperature was required for the adsorption of anions onto the sliding surface.

    DOI: 10.3390/coatings10020153

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  • Tribological performances of halogen-free ionic liquids against a-C:H and ta-C films under vacuum Reviewed

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING   14 ( 3 )   2020

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JAPAN SOC MECHANICAL ENGINEERS  

    Ionic liquids have high potential as novel lubricants because of their unique physical properties. In particular, halogen-free ionic liquids are low environmental-load lubricants. Unfortunately, these ionic liquids exhibit a poor tribological performance against bearing steel. However, they exhibit high performances against diamondlike carbon (DLC) under the high vacuum condition. The influence of DLC species on tribological performances and the reaction mechanism of halogen-free ionic liquids on the worn surface are still unknown. This investigation evaluates the tribological performances of halogen-free ionic liquids (1-ethyl-3-methylimidazolium dicyanamide ([EMIM][DCN]), 1-ethyl-3-methylimidazolium tricyanomethane ([EMIM][TCC]), and 1-ethyl-3-methylimidazolium tetracyanoborate ([EMIM][TCB])) against two types of DLC (tetrahedral amorphous carbon (ta-C) and hydrogenated amorphous carbon (a-C:H)). The tribological performances of ionic liquids differed by the anion structure and the type of DLCs. The DLCs lubricated with [EMIM][DCN] and ta-C lubricated with [EMIM][TCC] exhibited a low friction coefficient. On the other hand, other ionic liquids exhibited the high friction coefficients against DLCs. A time-of-flight secondary-ion mass spectrometer analysis indicated that the tribo-decomposition of halogen-free ionic liquids and the adsorption of anion achieve a low friction. The chemical activity of nascent surfaces plays a very important role in achieving tribo-decomposition. However, because this activity of DLC was lower than that of bearing steel, [EMIM][TCC] exhibited a poor tribological performance. Thus, although the tribological performances of halogen-free ionic liquids can be improved by using DLC as sliding materials, there is also the possibility of inhibiting the formation of an adsorption layer derived from ionic liquids.

    DOI: 10.1299/jamdsm.2020jamdsm0032

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  • Static and dynamic characteristics of a downsized aerostatic circular thrust bearing with a single feed hole Reviewed

    Kazuma Ishibashi, Akihito Kondo, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto, TadeuszStolarski

    PRECIS ENG   60,,448-457   448 - 457   2019.11

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  • Inertial effect on gas squeeze film for large radius disc excited by standing waves with complex modal shapes Reviewed

    Yi Qiang Fan, Masaaki Miyatake, Shouhei Kawada, Bin Wei, Shigeka Yoshimoto

    INT J MOD PHYS B   33,24,- ( 24 )   2019.10

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    DOI: 10.1142/S0217979219502825

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  • Tribological performance of cyano-based ionic liquids as functional fluid

    Shouhei Kawada, Seiya Watanabe, Yuki Hirata, Chiharu Tadokoro, Ryo Tsuboi, Shinya Sasaki

    Surfactants in Tribology, Volume 6   3 - 15   2019.8

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  • Effect of water on the interfacial structures of room-temperature ionic liquids Reviewed

    Shouhei Kawada, Eri Kodama, Keisuke Sato, Shuhei Ogawa, Masaya Watanabe, Hikaru Okubo, Shinya Sasaki

    SURFACE AND INTERFACE ANALYSIS   51 ( 1 )   17 - 20   2019.1

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    The interfacial structures of cyano-based room-temperature ionic liquids play a very important role in reducing friction. However, the presence of water impairs their tribological performance. The interfacial structures and friction forces of 1-ethyl-3-methylimidazolium dicyanamide, [EMIM][DCN], and the effect of water on these structures and forces were investigated using atomic force microscopy. In addition, the interaction of water and [EMIM][DCN] was evaluated using Fourier-transform infrared (FT-IR) spectroscopy. Multiple repulsive layers were observed in the [EMIM][DCN] solution. This solution showed low friction force because these repulsive layers worked as protective layers against friction. On the other hand, the specific repulsive layer characteristics of [EMIM][DCN] could not be observed in a [EMIM][DCN] + 2 wt% H2O solution. FT-IR results indicated that the layer structure of [EMIM][DCN] was disturbed by the addition of H2O. Therefore, the solution containing water exhibited a high friction force.

    DOI: 10.1002/sia.6536

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  • Friction Control by Applying Electric Potential under Lubrication with Ionic Liquids Reviewed

    Shouhei Kawada, Shuhei Ogawa, Shinya Sasaki, Masaaki Miyatake

    TRIBOLOGY ONLINE   14 ( 2 )   71 - 77   2019

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    This study investigated the effects of the electric potential of a surface on the lubricating capabilities of ionic liquids. The friction coefficient of 1-butyl-3-methylimidazolium iodide was unchanged by the electric potential of the surface because this ionic liquid has difficulty moving in a solution owing to its low conductivity. However, the friction coefficient, when lubricated with 1-butyl-3-methylimidazolium tris(pentafluoroethyl) trifluorophosphate and 1-butyl-3-methylimidazolium hexafluorophosphate, changed when the electric potential of the surface was varied. At -2.0 V, cations were adsorbed on the sliding surface. The alkyl chain of cations supported the load and achieved a low friction coefficient. However, at 2.0 V, anions were adsorbed on the sliding surface. Such ions cannot support the load, and thus reach a high friction coefficient.

    DOI: 10.2474/trol.14.71

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  • Effect of Surrounding Atmosphere on Friction Properties of Hydrophobic and Hydrophilic Ionic Liquids Reviewed

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    TRIBOLOGY ONLINE   14 ( 5 )   285 - 292   2019

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    The properties of ionic liquids make them an appealing choice for use as lubricant oil. However, the effect of moisture on the friction properties of ionic liquids needs to be elucidated. Moisture affects the disappearance and growth of the lubricating layer of these liquids. To express the high friction reduction effect, the lubricating layer formed by the ionic liquids at the friction interface plays a very important role. Thus, it is necessary to evaluate the relationship between these liquid structures and moisture, for the development of design guidelines for new ionic liquid structures that can achieve very low friction. This investigation evaluated the friction properties and the friction mechanisms of hydrophobic ionic liquids (1-butyl-3-methylimidazolium dicyanamide [BMIM][DCN] and 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4]), and a hydrophilic ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6]) under various atmospheres (vacuum, dry air, and air) to better understand the effect of moisture on the friction properties. The hydrophilic ionic liquid exhibited differences in the friction properties depending on the atmosphere, while the hydrophobic ionic liquid remained unaffected by the atmosphere. The adsorption layer formed by [BMIM][DCN] was anion-rich, both ion-rich, and cation-rich in vacuum, dry air, and air respectively. In air, [BMIM][BF4] developed corrosive wear and the reaction layer formed by [BMIM][PF6] increased with moisture.

    DOI: 10.2474/trol.14.285

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  • EFFECT OF SURFACE ELECTRIC POTENTIAL ON FRICTION COEFFICIENT OF IONIC LIQUIDS Reviewed

    Shouhei Kawada, Shuhei Ogawa, Shinya Sasaki

    Proceedings of Asia International Conference on Tribology 2018   ,,303-304   303 - 304   2018.9

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  • Evaluation of Friction Behavior and Surface Interactions of Cyano-Based Ionic Liquids under Different Sliding Contacts and High Vacuum Condition Reviewed

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki, Masaaki Miyatake

    Lubricants   6,69,- ( 69 )   2018.8

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  • 潤滑剤としてのイオン液体の展望 Reviewed

    川田将平, 佐々木信也

    トライボロジスト   63 ( 5 )   317 - 323   2018.5

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  • MoDTC-induced wear acceleration mechanism of a hydrogenated amorphous carbon diamond-like carbon film Reviewed

    大久保光, 前田寛陽, 川田将平, 田所千治, 佐々木信也

    日本機械学会論文集(Web)   84 ( 861 )   2018.5

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  • Lubricating mechanism of cyano-based ionic liquids on nascent steel surface Reviewed

    S. Kawada, S. Watanabe, C. Tadokoro, R. Tsuboi, S. Sasaki

    Tribology International   119   474 - 480   2018.3

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    This study investigates the lubricating mechanism of cyano-based ionic liquids on steel surfaces using Q-MS, ToF-SIMS, and TGA. [EMIM][DCN], [EMIM][TCC], [EMIM][TCB], [BMPL][DCN], [BMPL][TCC], and [BMPL][TCB] were selected as lubricants. [EMIM][TCB] exhibited the highest friction coefficient. The others exhibited very low friction coefficients of less than 0.08. Q-MS analysis indicated that the cation components were detected in outgassing during sliding tests. However, anion components were not detected. ToF-SIMS results showed that the anions remained on the worn surfaces which would lead low friction coefficients. To achieve low friction coefficient, the tribo-decomposition of the ionic liquids and adsorption of anion were required. TGA indicated thermal stability was an index for tribo-decomposition on the nascent steel surface.

    DOI: 10.1016/j.triboint.2017.11.019

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  • Effects of Alkyl Chain Length of Sulfate and Phosphate Anion-Based Ionic Liquids on Tribochemical Reactions Reviewed

    Shouhei Kawada, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    TRIBOLOGY LETTERS   66 ( 1 )   2018.3

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    Ionic liquids are expected to become increasingly popular lubricants as they feature a number of attractive properties. This investigation focused on sulfate and phosphate anion-based ionic liquids and the improvement in lubricating performance with the addition of these anions. However, the detailed lubricating mechanism and effect of alkyl chain length on tribochemical reactions are unclear. This study investigates tribochemical reaction processes using a quadrupole mass spectrometer ( Q-MS) and X-ray photoelectron spectroscopy. Seven types of ionic liquids: 1-ethyl-3-methylimidazolium hydrogensulfate ([EMIM][HSO4]), 1-ethyl-3-methylimidazolium methylsulfate ([EMIM][MSU]), 1-ethyl-3-methylimidazolium ethylsulfate ([EMIM][ESU]), 1-ethyl-3-methylimidazolium n-octylsulfate ([EMIM][OSU]), 1-ethyl-3-methylimidazolium dimethyl phosphate ([EMIM][DMP]), 1-ethyl-3-methylimidazolium diethyl phosphate ([EMIM][DEP]), and 1-ethyl-3-methylimidazolium dibutyl phosphate ([EMIM][DBP]), were selected as lubricants. The friction coefficient of sulfate anion-based ionic liquids increased as their alkyl chain lengthened. However, wear scar diameter in this case showed the opposite tendency. The friction coefficient and wear scar diameter of phosphate anion-based ionic liquids increased with an increase in the alkyl chain length. Q-MS results indicated that the main outgassing components during sliding were the cation components, whereas the anion remained on the sliding surface and formed a tribofilm. The ionic liquids with short alkyl chains reacted with the sliding surface easily and led to very low friction. However, corrosive wear occurred in the case of the sulfate anion. On the other hand, anions with long alkyl chains underwent gradual tribochemical reactions because that led the mitigation of contact with nascent surface. The phosphate-based ionic liquids with long alkyl chains were unable to cause the lubricating effect due to low reactivity.

    DOI: 10.1007/s11249-017-0962-1

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  • Tribological Properties of Cyano-Based Ionic Liquids under Different Environments Reviewed

    Shouhei Kawada, Shinya Sasaki

    TRIBOLOGY ONLINE   13 ( 3 )   152 - 156   2018

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    Ionic liquids have been used as novel high-performance lubricants. However, fluorine-based ionic liquids cause corrosion of materials by the formation of FeF2 and FeF3. This study focuses on cyano-based ionic liquids, as they have low corrosion tendencies owing to the absence of fluorine in their structures. However, cyano-based ionic liquids are hydrophilic, and hence, the effect of ambient conditions (e.g., atmospheric moisture) on the tribological properties needs to be investigated. This study reports the tribological properties of two types of cyano-based ionic liquids 1-ethyl-3-methylimidazolium dicyanamide and 1-ethyl-3-methylimidazolium tricyanomethane under air, vacuum, and dry air environments. Their friction coefficients were found to be dependent on the ambient condition. Both the ionic liquids exhibited low friction coefficients in vacuum. The time-of-flight secondary ion mass spectrometry results indicated that the anion was adsorbed on the worn surface under vacuum conditions, and the adsorbed anion exhibited a low friction. In dry air, the cation was adsorbed on the worn surface, and the adsorbed cation exhibited a higher friction coefficient than the adsorbed anion. In air, the cyano-based ionic liquids caused corrosion of the sliding material and exhibited a high friction coefficient, because of the absorption of moisture from air.

    DOI: 10.2474/trol.13.152

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  • Tribological Performance of Halogen-Free Ionic Liquids in Steel-Steel and DLC-DLC Contacts Reviewed

    Hikaru Okubo, Shohei Kawada, Seiya Watanabe, Shinya Sasaki

    TRIBOLOGY TRANSACTIONS   61 ( 1 )   71 - 79   2018

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    The tribological performance of halogen-free ionic liquids at steel-steel and diamond-like carbon (DLC)DLC contacts was investigated. Hydrogenated amorphous carbon (a-C:H) and tetrahedral amorphous carbon (ta-C) were used as test specimens. Friction tests were carried out on steel-steel, a-C:H-a-C:H, and ta-C-ta-C contacts by using a reciprocating cylinder-on-disk tribotester lubricated with two different types of halogen-free ionic liquids: 1-ethyl-3-methylimidazolium dicyanamide ([BMIM][DCN]) and 1-butyl-3-methylimidazolium tricyanomethanide ([BMIM][TCC]. From the results of friction tests, the ta-C-ta-C tribopair lubricated with [BMIM][DCN] or [BMM][TCC] exhibited an ultralow friction coefficient of 0.0180.03. On the other hand, ultralow friction was not observed at the steel-steel and a-C:H-a-C:H contacts. Measurements obtained with a laser scanning microscope and an atomic force microscope (AFM) showed that a chemical reaction film, derived from the ionic liquid lubricant used, was formed on the steel surfaces. However, this chemical reaction film was not observed on either of the DLC surfaces. The AFM results showed that there were high-viscosity products on the ta-C surfaces, that the wear tracks on the ta-C surfaces exhibited low frictional properties, and that the ta-C surfaces were extremely smooth after the friction tests. Based on these results, it was concluded that an ionic liquid-derived adsorbed film formed on the ta-C surface and resulted in the ultralow friction when lubricated with a halogen-free ionic liquid.

    DOI: 10.1080/10402004.2016.1272731

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  • Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment Reviewed

    Miyamoto, Junji, Kodama, Masayuki, Kawada, Shouhei, Tsuboi, Ryo

    TRIBOLOGY ONLINE   13 ( 5 )   248 - 253   2018

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    Plasma jet sterilization of cutting fluid was performed under atmospheric pressure, and the tribological properties of the resulting fluid were investigated. The mechanisms of atmospheric-pressure plasma jet sterilization were also clarified. The number of bacterial colonies in the sterilized fluid was reduced by more than 90% compared with the untreated fluid. After exposure to ultraviolet light, no comparable reduction was observed. We concluded that the sterilization observed in the study was caused by the reaction of excited N-2, N, and Ar. The IR spectra of the plasma-treated cutting fluid were the same as those of the untreated fluid. However, the transmittance of the C=O peak decreased in proportion to the discharge voltage. The treated cutting fluids maintained a low friction coefficient 2.4 times longer than the untreated fluid. The sliding angle and adhesive energy of the untreated cutting fluid were considerably lower than those of the unused cutting fluid. Furthermore, the sliding angle and adhesive energy of the plasma-treated cutting fluid were higher than those of the untreated cutting fluid. Therefore, we consider that the lower friction coefficient of plasma-treated cutting fluid as compared to that of the untreated cutting fluid is related to this result. The study demonstrated that the life of a cutting fluid can be prolonged by this novel plasma treatment, with an associated improvement in tribological properties.

    DOI: 10.2474/trol.13.248

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  • Lubricating property of cyano-based ionic liquids against hard materials Reviewed

    Shouhei Kawada, Keisuke Sato, Seiya Watanabe, Shinya Sasaki

    JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY   31 ( 12 )   5745 - 5750   2017.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:KOREAN SOC MECHANICAL ENGINEERS  

    Ionic liquids are expected to be used as a new lubricants and lubricant additives because of their unique properties. However, cyano-based ionic liquids have exhibited poor lubricating property with steel/steel contacts. We evaluated the lubricating properties of cyano-based ionic liquids with steel/hard materials contacts. TiO2, Al2O3, and tetrahedral amorphous carbon (ta-C) DLC were used as hard materials. Six types of ionic liquids, as combination of two types of cations ([EMIM], [BMPL]) and three types of cyanide anions ([DCN], [TCC] and [TCB]), were selected. In sliding tests of steel/TiO2 and steel/Al2O3 lubricated with [EMIM][DCN], [BMPL][DCN], [EMIM][TCC], [BMPL][TCC] exhibited low friction coefficients of less than 0.1. In addition, steel/Al2O3 and steel/ta-C DLC lubricated with [BMPL][TCB] exhibited very low friction coefficients less than 0.05. On the other hand, high friction coefficients were observed at steel/TiO2 and steel/Al2O3 contacts lubricated with [EMIM][TCB] and steel/ta-C DLC contact lubricated with [EMIM] cation group. Peeling of the ta-C DLC was observed when [EMIM] cation group was used. ToF-SIMS analysis indicated that the anion was adsorbed on the worn surfaces in the case of low frictional conditions. However, both ions were hardly observed in the case of high frictional conditions. It is considered that the ionic liquids underwent tribo-decomposition on the worn surfaces at low friction coefficient. To evaluate the degree of tribo-decomposition, Thermogravimetric analysis (TGA) was used. TGA results indicated that [EMIM][TCB], which exhibited high friction coefficient, had the most highest stability among all ionic liquids. Low stability ionic liquids, however, showed a tendency for low friction coefficient. These results suggest that lubricating properties are related to the stability of ionic liquids.

    DOI: 10.1007/s12206-017-1116-y

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  • Ionic liquids and polymeric amphiphiles in tribology

    Shouhei Kawada, Yusuke Ichise, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    Surfactants in Tribology, Volume 5   3 - 18   2017.1

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    The tribochemical decomposition processes of ionic liquids (1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl-3-methylimidazolium hexafluorophosphate, and 1-ethyl-3-methylimidazolium tetracyanoborate) on AISI 52100 surfaces were investigated on a friction tester in vacuum with a quadrupole mass spectrometer (Q-mass). The fluorine-containing ionic liquids showed a low friction coefficient and a small wear scar compared to fluorine-free ionic liquid. The Q-mass results indicated that ionic liquids underwent catalytic decomposition on nascent AISI 52100 surface. Increases in partial pressures derived from the cations of the fluorinated ionic liquids were detected and positively identified. This result indicated these ionic liquids decomposed by the sliding. However, the decomposition of the ionic liquids after 3 min was not identified because a reactive film was formed during this period and covered the nascent AISI 52100 surface. For the fluorine-free ionic liquid, increases in the partial pressures derived from both the cation and the anion were detected throughout the experiment, indicating that this ionic liquid did not form a reactive film on the AISI 52100 surface. An x-ray photoelectron spectroscopy (XPS) analysis revealed that fluorinated ionic liquids produced reactive films, and the type of reactive film was different for each ionic liquid. The reactive film was mainly composed of FeF2 and/or FeF3. In addition, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-butyl-3-methylimidazolium hexafluorophosphate produced reactive films comprising sulfide and phosphide, respectively.

    DOI: 10.1201/b20780

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  • Lubrication Mechanism of Halogen-Free Ionic Liquids Reviewed

    Shouhei Kawada, Seiya Watanabe, Ryo Tsuboi, Shinya Sasaki, Braham Prakash

    TRIBOLOGY ONLINE   12 ( 4 )   155 - 161   2017

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    Ionic liquids have potential for use as novel high-performance lubricants because of their attractive characteristics such as low volatility, high-thermal stability, and oxidation stability. It is known that ionic liquids exhibit excellent lubricity for metals because of halogen constituents in their molecular structure. However, occurrence of corrosive damage on the contacting surfaces lubricated with the ionic liquids has also been reported. To prevent damage due to corrosion, it is necessary to use halogen-free ionic liquids whose lubricity may be inferior compared with that of halogen-containing ionic liquids. In this study, the lubricity of halogen-free ionic liquids 1-butyl-3-methylimidazolium dicyanamide ([BMIM][DCN]) and 1-butyl-3-methylimidazolium tricyanomethane ([BMIM][TCC]) was evaluated by using a reciprocating sliding friction and wear tester (SRV Optimol)) using an oscillating steel cylinder on H-free DLC disk test configuration under boundary lubrication conditions. The SRV test results showed that H-free DLC with [BMIM][TCC] at 50N exhibited superior lubricity than that with [BMIM][DCN] at the same load. In order to understand the observed, the worn surfaces of test specimens were analyzed by using Raman spectroscopy, the friction coefficient of the film by atomic force microscopy (AFM), and the chemical composition by time of flight secondary ion mass spectrometry (TOF-SIMS). From Raman spectroscopic analysis results, graphitization of the transfer films of both [BMIM][DCN] and [BMIM][TCC] did not occur. From AFM results, the topography of [BMIM][TCC] was smooth as compared with that of [BMIM][DCN]. Thus, it was considered that the surface roughness affected the lubricity. In addition, the tribofilm derived from [BMIM][TCC] also affected the lubricity because it showed low friction coefficient on the flat position. From ToF-SIMS results, it was considered that [BMIM][DCN] itself adsorbed on H-free DLC surface. On the other hand, [BMIM][TCC] is thermally decomposed by friction and generated isolated CN and covering the H-free DLC surface. The tribofilm formed by [BMIM][TCC] exhibited lower friction coefficient than that by [BMIM][DCN].

    DOI: 10.2474/trol.12.155

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  • Tribochemical Reactions of Ionic Liquids Under Vacuum Conditions Reviewed

    Shouhei Kawada, Seiya Watanabe, Yuriko Kondo, Ryo Tsuboi, Shinya Sasaki

    TRIBOLOGY LETTERS   54 ( 3 )   309 - 315   2014.6

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    Ionic liquids are expected to function as novel lubricants owing to their attractive characteristics such as high thermal stability and low vapor pressure. In order for ionic liquids to be used as lubricants, knowledge of their corrosion and lubricating properties must be obtained. However, the reaction mechanism and decomposition of ionic liquids have not yet been sufficiently clarified. In this study, we elucidate the tribological properties and tribochemical reaction mechanism by analyzing outgassing generated by the decomposition or reaction of ionic liquids [EMIM][DCN], [EMIM][TCB], and [BMPL][TCB] on a sliding surface. From our results, [BMPL][TCB] showed the lowest friction coefficient and [EMIM][DCN] had a lower friction coefficient than [EMIM][TCB]. In all cases, outgassing from the ionic liquid was confirmed, and main outgassing products were derived from the cation. [BMPL][TCB] had the largest amount of outgassing. Time-of-flight secondary ion mass spectroscopy analysis showed that tribochemical reactions involving the anion occurred. From sliding tests and experimental analyses, it is revealed that the [DCN] anion showed superior lubricating properties to the [TCB] anion.

    DOI: 10.1007/s11249-014-0342-z

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  • Tribochemical reaction of ionic liquids under vacuum condition

    Shouhei Kawada, Seiya Watanabe, Yuriko Kondo, Ryo Tsuboi, Shinya Sasaki

    5th World Tribology Congress, WTC 2013   2   1635 - 1637   2013

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Books

  • イオン液体の潤滑剤応用に関する研究

    川田将平, 佐々木信也( Role: Joint author)

    化学工学  2024.3 

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  • イオン液体の摩擦界面構造に着目した新たな潤滑システム構築への試み

    川田将平, 丹治隼輔, 宮武正明, 佐々木信也

    表面と真空  2022.9 

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  • イオン液体の潤滑メカニズムと潤滑剤としての活用

    川田将平, 佐々木信也( Role: Joint author)

    シーエムシー出版・イオン液体の実用展開へ向けた最新動向  2022.8 

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  • 異分野との交流が成長を促す

    川田将平( Role: Sole author)

    日本機械学会誌  2022.8 

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  • トライボロジー用途としてのイオン液体の応用

    川田将平( Role: Sole author)

    Colloid & Interface Communication  2022.3 

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  • 微量水分がイオン液体の腐食現象および潤滑性に与える影響

    川田将平、渡部誠也、宮武正明、佐々木信也

    トライボロジスト  2020.10 

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  • Surfactants in Tribology Volume 6

    Shouhei Kawada, Seiya Watanabe, Yuki Hirata, Chiharu Tadokoro, Ryo Tsuboi, Shinya Sasaki( Role: Joint author)

    CRC Press  2019.7  ( ISBN:9781138584570

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  • 油空圧技術2019年5月号

    宮武 正明, 川田 将平, 佐々木信也, 吉本成香( Role: Joint author)

    日本工業出版  2019.5 

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  • NORDTRIB2018参加とスウェーデン王立工科大学見学を終えて

    川田将平

    トライボロジスト  2019.5 

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  • Tribochemical Reactions of Halogen-Free Ionic Liquids on Nascent Steel Surface

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki, Masaaki Miyatake( Role: Joint author)

    IntechOpen  2018.9 

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  • 潤滑剤としてのイオン液体の展望 Reviewed

    川田将平, 佐々木信也

    トライボロジスト  2018.5 

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  • 数値解析と表面分析によるトライボロジーの解明と制御

    川田将平, 佐々木信也( Role: Joint author)

    テクノシステム  2018.3  ( ISBN:9784924728806

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  • Surfactants in Tribology Volume 5

    Shouhei Kawada, Yusuke Ichise, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki( Role: Joint author)

    CRC Press  2017.9  ( ISBN:9781498734790

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  • 粘性真空ポンプ機能を持つ非接触シールの動的特性に関する数値的研究

    露木峻正、川田将平、宮武正明、吉本成香

    トライボロジー会議2020秋 別府   2020.11

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  • アルキル鎖長の異なるイオン液体がZDDP併用添加油の摩擦・摩耗特性に与える影響

    佐藤魁星、佐藤優子、川田将平、渡部誠也、佐々木信也

    トライボロジー会議2020秋 別府   2020.11

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  • Tribological Performances of 3-(Trimethylsilyl)-1-Propanephosphate Anion Based Ionic liquids as Lubricant Additives

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake, Gen Masuda

    2020 STLE Tribology Frontiers Virtual Conference   2020.11

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  • イオン液体の潤滑性に対する相対湿度の影響

    小林生、川田将平、宮武正明、佐々木信也

    トライボロジー会議2020秋 別府   2020.11

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  • エンドミル加工時における静圧空気スピンドルの振れ精度に関する研究

    エンドミル加工時における静圧空気スピンドルの振れ精度に関する研究

    トライボロジー会議2020秋 別府   2020.11

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  • イオン液体潤滑下における摩擦係数の能動的制御

    川田将平、佐々木信也、宮武正明

    2020年 日本表面真空学会 学術講演会   2020.11

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  • 2019 STLE TFC

    川田 将平

    東京理科大学 科学フォーラム   ( 419 )   46 - 46   2020.10

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  • 微量水分がイオン液体の腐食現象および潤滑性に与える影響

    川田将平、渡部誠也、宮武正明、佐々木信也

    トライボロジスト   65 ( 10 )   629 - 635   2020.10

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  • Lubricating Performance of Japanese Lacquer (Urushi) Under Dry and Water Lubrication

    Akinori Sakai, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki and SHigeka Yoshimoto

    2019 STLE Tribology Frontiers Conference   2019.10

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  • Tribological Properties of cyano-Based Ionic Liquids as Lubricant Additives

    Shouhei Kawada, Shinya Sasaki and Masaaki Miyatake

    2019 STLE Tribology Frontiers Conference   2019.10

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  • Study on Lubricant Supply System for Vacuum Compatible Fluid Film Bearings

    Sato Daiki, Shouhei Kawada, Masaaki Miyatake and Shigeka Yoshimoto

    2019 STLE Tribology Frontiers Conference   2019.10

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  • Numerical and Experimental Study on Run-Out of a Milling Spindle Supported by Aerostatic Bearings in End Milling Process

    Keita Shimada, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    Internatiobal Tribology Conference Sendai 2019   2019.9

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  • NON-CONTACT HANDLING EQUIPMENT UTILIZING ULTRASONIC SQUEEZE FILM LEVITATION

    Yusaku Katayama, Shouhei Kawada, Masaaki Miyatake, C. Mares, T. Stolarski, Shigeka Yoshimoto

    46th Leeds Lyon Symposium on Tribology   2019.9

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  • FM-AFM observation on effect of water on adsorption layer of hydrophobic and hydrophilic ionic liquids

    Shouhei Kawada, Yuko Sato, Masaaki Miyatake, Shinya Sasaki

    46th Leeds Lyon Symposium on Tribology   2019.9

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  • Numerical and Experimental Study on a Reduction Method of Power Consumption of Water Lubricated Hydrostatic Thrust Bearings

    Naoki Hirata, Rashid AlZarooni, Yusuke Asakawa, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    International Tribology Conference Sendai 2019   2019.9

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  • Treatment of Deteriorated Cutting Fluid by Atmospheric-Pressure Plasma and in-Liquid Plasma

    Junji Miyamoto, Ryo Tsuboi, Shouhei Kawada and Masashi Yoshida

    Proceedings of The 15th International Symposium on Sputtering and Plasma Processes   121 - 123   2019.6

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  • Tribological Performance of Halogen-free Ionic Liquids Consisted of Phosphonium Cation and Cyanide Anion

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    European Conference on Tribology - ECOTRIB 2019   2019.6

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  • NORDTRIB2018参加とスウェーデン王立工科大学見学を終えて

    川田将平

    トライボロジスト   64 ( 5 )   308 - 311   2019.5

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  • 金属粉末焼結3Dプリンタを用いた空気軸受の開発

    宮武正明、川田将平、佐々木信也、吉本成香

    トライボロジー会議2019春 東京   2019.5

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  • イオン液体の潤滑特性に周囲雰囲気が及ぼす影響の調査

    川田将平、佐々木信也、宮武正明

    トライボロジー会議2019春 東京   2019.5

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  • Contactless gripper using ultrasonic levitation for handling light objects

    Yusaku Katayama,Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)   2019.4

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  • Characteristics of Aerodynamic Foil Thrust Bearings Manufactured Using Direct Metal Printing Technology

    Zheng Chuanyu, Alzarooni Rashid, Shouhei Kawada, Maasaaki Miyatake,Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)   2019.4

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  • A Method of Reducing Windage Power Loss of a High-Speed Motor Using a Viscous Vacuum Pump

    Junpei Horiike, Daiki Sato, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)   2019.4

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  • イオン液体の固液界面吸着構造と摩擦表面での摩擦化学反応

    川田将平、佐々木信也、宮武正明

    日本表面真空学会 2019年度 関東支部学術講演大会   2019.4

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  • Numerical and Experimental Study on Characteristics of a Milling Spindle Supported by Aerostatic Bearings

    Keita Shimada, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)   2019.4

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  • イオン液体添加によるZDDP含有油の潤滑性向上メカニズムの解明

    佐藤魁星、川田将平、佐々木信也

    日本機械学会 関東支部 第25期総会・講演会   2019.3

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  • FM-AFM によるイオン液体ー水混合溶液の吸着構造の観察

    川田 将平、佐々木 信也、宮武 正明

    2018年日本表面真空学会学術講演会   2018.11

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  • 金属粉末焼結3Dプリンタを用いて製作した多孔質静圧空気軸受の軸受特性に関する研究-第2報-

    貞弘稜、中山将太、川田将平、宮武正明、佐々木信也、吉本成香

    トライボロジー会議2018秋 伊勢   2018.11

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  • 超高速回転静圧空気軸受スピンドルを用いたマイクロミーリング加工に関する研究

    青塚拓也、川田将平、宮武正明、吉本成香

    トライボロジー会議2018秋 伊勢   2018.11

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  • 粘性真空ポンプを用いた高速回転モータの風損低減方法に関する研究

    堀池純平、川田将平、宮武正明、吉本成香

    トライボロジー会議2018秋 伊勢   2018.11

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  • 漆を用いた摺動材料の摩擦・摩耗特性に関する研究(ドライおよび水潤滑における評価)

    堺章徳、川田将平、宮武正明、佐々木信也、吉本成香

    トライボロジー会議2018秋 伊勢   2018.11

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  • 添加剤としてのZDDPとイオン液体併用におけるイオン液体構造変化の影響

    佐藤魁星、大久保光、川田将平、佐々木信也

    トライボロジー会議2018秋 伊勢   2018   2018.11

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  • Numerical Study on Run-Out of a Milling Spindle Supported by Aerostatic Bearings in End Milling Process

    Hiroto TANISHIMA, Shouhei KAWADA, Masaaki MIYATAKE and Shigeka YOSHIMOTO

    The 8th International Conference on Positioning Technology(ICPT2018)   2018.11

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  • 摩擦雰囲気がイオン液体の潤滑特性に与える影響

    川田将平 佐々木信也 宮武正明

    第9回 イオン液体討論会   2018.10

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  • Effects of zinc dialkyldithiophosphate (ZDDP) and ionic liquids with different cations on tribological properties under boundary lubrication

    Kaisei Sato, Hikaru Okubo, Shouhei Kawada, Shinya Sasaki

    45th LEEDS-LYON SYMPOSIUM on TRIBOLOGY   2018.9

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  • 表面電位がイオン液体の潤滑特性に与える影響

    川田将平、佐々木信也、宮武正明

    日本機械学会 2018年度年次大会   2018.9

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  • Effect of water on adsorption layer of ionic liquid on mica

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    Water on Materials Surface 2018   2018.7

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  • Effect of Water on Adsorption Layer Structure of Ionic Liquid

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    22nd International Symposium on Surfactants in Solution   2018.6

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  • Lubricating performance of cyano-based ionic liquids on nascent surface

    Shouhei Kawada

    The 18th Nordic Symposium on Tribology – NORDTRIB 2018   2018.6

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  • マイカ上のイオン液体吸着層に水が及ぼす影響

    川田将平、佐々木信也、宮武正明

    トライボロジー会議2018春 東京   2018.5

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  • ホウ素含有イオン液体による摩擦低減効果(第3報)

    渡邉保奈美、小野寺康、佐藤剛久、川田将平、佐々木信也

    トライボロジー会議2018春 東京   2018.5

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  • 金属粉末焼結3Dプリンタを用いて製作した多孔質静圧空気軸受の軸受特性に関する研究

    貞弘 稜、中山 将太、宮武 正明、佐々木 信也、川田 将平、吉本 成香

    トライボロジー会議2018春 東京   2018.5

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  • 金属粉末焼結3Dプリンタを用いて製作した動圧型空気フォイルスラスト軸受の軸受特性に関する研究

    臼井 智哉、宮武 正明、佐々木 信也、川田 将平、吉本 成香

    トライボロジー会議2018春 東京   2018.5

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  • 境界潤滑下における潤滑特性に対するイオン液体添加の影響

    佐藤魁星、大久保光、川田将平、平田祐樹、佐々木信也

    トライボロジー会議2018春 東京   2018   2018.5

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  • イオン液体の潤滑特性に水が及ぼす影響

    川田将平,佐々木信也,宮武正明

    日本機械学会 第18回機素潤滑設計部門講演会   2018.4

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  • 境界潤滑下におけるZDDPの潤滑性に及ぼすイオン液体添加の影響

    佐藤魁星、大久保光、川田将平、平田祐樹、佐々木信也

    日本機械学会 第18回機素潤滑設計部門講演会   18th   2018.4

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  • イオン液体の界面構造に水が及ぼす影響

    川田将平 佐々木信也 宮武正明

    日本表面科学会第3回関東支部講演大会   2018.4

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  • 外部電圧がイオン液体の摩擦特性に与える影響

    小川修平、川田将平、佐々木信也

    日本機械学会関東支部第24期総会講演会   2018.3

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  • Perspective of ionic liquids as lubricants

    Shouhei Kawada, Shinya Sasaki

    Toraibarojisuto/Journal of Japanese Society of Tribologists   63 ( 5 )   317 - 323   2018

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    Ionic liquids are expected to be used as novel lubricants because of their unique characteristics such as low vapor pressure, low volatility, and high thermal stabilities. Their physical properties compares favorably with conventional lubricants. However, it is well known that the halogen-containing ionic liquids cause corrosion of worn surface, although exhibit high lubricating performance. In order to preclude the corrosion, the application of halogen-free ionic liquids is proposed. The halogen-free ionic liquids such as phosphorus, sulfur, boron and cyano-based ionic liquids are expected as a substitute for the halogen ionic liquids. The phosphorus and sulfur-based ionic liquids show the inferior lubricity to that of halogen-containing ionic liquids. The boron-based ionic liquids exhibit ultralow friction, and these lubricating performance surpass the halogen-containing ionic liquids. The lubricity of cyano-based ionic liquids is improved by changing the cations and anions. In addition, the ultralow friction phenomena is confirmed in the combination of a cyano-based ionic liquid and diamond like carbon (DLC) film as sliding surface. In applying ionic liquids as lubricants, combination with friction materials is also an important subject to be studied.

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  • シアノ系イオン液体のta-C DLCに対する低摩擦発現メカニズムの調査

    川田将平 佐藤佳介 大久保光 佐々木信也

    トライボロジー会議秋2017   2017   2017.11

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  • ハロゲンフリーイオン液体の潤滑特性に関する研究

    川田将平、佐々木信也

    イオン液体討論会   2017.11

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  • Tribo-chemistry of Cyano-based Ionic Liquids on Sliding Surface

    Shouhei Kawada, Keisuke Sato, Hikaru Okubo, Seiya Watanabe, Shinya Sasaki

    The 8th International Symposium on Surface Science   2017.10

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  • Lubricating Mechanism of Cyano-based Ionic Liquids on various Sliding Materials

    Shouhei Kawada, Hikaru Okubo, Seiya Watanabe, Shinya Sasaki

    サステイナブルトライボロジー会議2017   2017.10

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  • 電圧印加による境界潤滑下でのイオン液体の摩擦特性制御

    小川修平 川田将平 佐々木信也

    日本機械学会 2017年度年次大会   2017.9

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  • The effect of molecular orientation of imidazolium-base ionic liquids under lubricating condition on frictional property

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Shinya Sasaki

    Faraday Discussion   2017.9

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  • Tribological Property of Cyano-based Ionic Liquids under Various Environment

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    6th World Tribology Congress   2017.9

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  • Newly synthesized Ionic Liquids (ILs) as friction modifier for automobile lubricants

    Pankaj Baghel, Hirofumi Kondo, Kouki Hatsuda, Nobuo Tano, Shinya Sasaki, Shouhei Kawada

    2017 STLE Annual Meeting and Exhibition   2017.5

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  • 電圧印加がイオン液体の摩擦特性に与える影響

    小川修平 川田将平 佐々木信也

    トライボロジー会議春2017   2017.5

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  • シアノ系イオン液体の潤滑特性向上に関する研究

    川田将平 渡部誠也 佐々木信也

    トライボロジー会議春2017   2017.5

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  • シアノ系アニオンを有するイオン液体の摩擦特性および摩擦分解挙動

    川田将平 渡部誠也 佐々木信也

    2016 真空・表面科学合同講演会 第36回表面科学学術講演会・第57回真空に関する連合講演会   2016.11

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  • ta-c膜に対するシアノ系イオン液体の潤滑メカニズム

    川田将平 渡部誠也 佐々木信也

    トライボロジー会議秋2016予稿集   2016.10

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  • イオン液体の潤滑特性および摩擦面での反応について

    川田将平 渡部誠也 佐々木信也

    イオン液体討論会   2016.10

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  • イオン液体の潤滑剤への応用に関する研究

    川田将平 渡部誠也 佐々木信也

    サステイナブルトライボロジー会議2016   2016.10

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  • Effect of Sliding Materials on Lubricity of Halogen-Free Ionic Liquids

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    Asia-Pacific Conference on Fracture and Strength 2016   2016.9

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  • Control of ionic liquidlubrication by applying electric field

    Shuhei Ogawa, Shouhei Kawada, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)   2016.5

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  • Relationship between tribo-decomposition and friction property of cyano-based ionic liquids

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)   2016.5

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  • Dynamic Observation of Ionic Liquids at Friction Interface by Sum-frequency Generation Spectroscopy

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)   2016.5

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  • 電場付加によるイオン液体の潤滑特性制御

    小川修平 佐々木信也 田所千治 川田将平

    日本機械学会第16回機素潤滑設計部門講演会   2016.4

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  • 非フッ素系無機酸を有するイオン液体の摩擦分解および摩擦特性の評価

    川田将平 渡部誠也 佐々木信也

    日本機械学会第16回機素潤滑設計部門講演会   2016.4

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  • イオン液体の金属摩擦面での反応について

    川田将平 渡部誠也 田所千治 佐々木信也

    第35回表面科学学術講演会   2015.12

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  • In-situ Analysis of Friction Interface using Sum Frequency Generation Spectroscopy

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    International Tribology Conference 2015   2015.9

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  • Tribochemical Reaction of Halogen-free Ionic Liquids including Sulfur or Phosphorus

    Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    International Tribology Conference 2015   2015.9

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  • Tribological Properties of Halogen-free Ionic Liquids

    Shouhei Kawada, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    International Tribology Conference 2015   2015.9

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  • Lubricity of Halogen-free Ionic Liquids

    Shouhei Kawada, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    Ecotrib2015   2015.6

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  • ハロゲンフリーイオン液体の分解および摩擦特性

    川田将平 一瀬友佑 渡部誠也 田所千治 佐々木信也 近藤洋文

    トライボロジー会議春2015   2015.5

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  • Effect of water mixed with ionic liquid on corrosive wear

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    20th International Conference on Wear of Materials 2015   2015.4

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  • Tribochemical Decomposition of Halogen-free Ionic Liquids on Nascent Steel Surface

    Shouhei Kawada, Yusuke Ichise, Yuriko Kondo, Seiya Watanabe, Ryo Tsuboi, Shinya Sasaki

    20th International Symposium on Surfactants in Solution   2014.6

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  • トライボフィルムに着目したハロゲンフリーイオン液体の潤滑メカニズム

    一瀬友佑 川田将平 近藤ゆりこ 渡部誠也 坪井涼 佐々木信也

    トライボロジー会議春2014   2014.5

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  • 真空中におけるハロゲンフリーイオン液体の潤滑機構

    川田将平 一瀬友佑 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議春2014   2014.5

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  • 真空中におけるイオン液体の潤滑メカニズムに関する研究

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    日本機械学会関東支部第20期総会講演会   2014.3

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  • 焼結製セラミックスに対するイオン液体の潤滑性に及ぼす分子構造の影響について

    近藤ゆりこ 渡部誠也 川田将平 坪井涼 佐々木信也

    トライボロジー会議秋2013   2013.10

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  • 電場によるイオン液体の潤滑特性制御について

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議秋2013   2013.10

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  • Tribological properties of halogen-free ionic liquids against sintered ceramics

    Yuriko Kondo, Shouhei Kawada, Seiya Watanabe, Ryo Tsuboi, Shinya Sasaki

    40th Leeds-Lyon Symposium on Tribology   2013.9

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  • Study on Ionic Liquids in the Electric Field

    Shouhei Kawada, Yuriko Kondo, Takahiro Koyama, Ryo Tsuboi, Shinya Sasaki

    40th Leeds-Lyon Symposium on Tribology   2013.9

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  • H-free DLCに対するハロゲンフリーイオン液体の潤滑メカニズムに関する研究

    近藤ゆりこ 川田将平 渡部誠也 小山貴大 坪井涼 佐々木信也

    トライボロジー会議春2013   2013.5

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  • 真空中におけるイオン液体内の不純物によるトライボケミカル反応への影響

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議春2013   2013.5

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  • 真空中におけるイオン液体のトライボケミカル反応に関する研究

    川田将平 坪井涼 佐々木信也

    日本機械学会関東学生会第52回学生員卒業研究発表講演会   2013.3

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Presentations

  • イオン液体の複合添加によるジアルキルジチオリン酸亜鉛の潤滑特性の相乗効果の発現

    佐藤魁星, 大久保光, 川田将平, 渡部誠也, 佐々木信也

    トライボロジー会議春2024  2024.5 

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  • 転がり軸受組込みセンサによるグリース劣化モニタリング

    谷弘詞, 戸根勇也, 川田将平, 呂仁国, 小金沢新治

    トライボロジー会議春2024  2024.5 

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  • Development of Ionic Liquids (ILs) as Lubricant Additives and Control of Lubricating Properties of ILs

    Shouhei Kawada

    2024.4 

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  • イオン液体を用いた摩擦制御システム構築への現状

    川田将平, 呂仁国, 小金沢新治, 谷弘詞, 佐々木信也

    第5回ナノトライボロジー研究センターシンポジウム  2024.3 

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  • 超磁歪型振動発電器の高出力化の検討

    荒木 貴弥, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • タイヤ組込み圧電フィルムによる車両荷重推定

    伊崎 吉紀, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平, 嶋内 友哉

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • グラフェン保護膜のHDIトライボロジー特性に関する研究

    森山 大吾, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • マイクロカレント発生機能組込みインソールの開発

    山形 祥一朗, 谷 弘詞, 信岡 裕哉, 呂 仁国, 小金沢 新治, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • 極圧性を持つ硫黄複素環式化合物の潤滑性能

    山下 瑛都, 呂 仁国, 谷 弘詞, 小金沢 新治, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • 橋梁の振動波形の分析による大型車両の通行台数の計数に関する研究

    水谷 充志, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • 磁気ディスク装置の大容量化のための薄型かしめの設計

    濵 志昂, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会 関西支部2023年度関西学生会卒業研究発表講演会  2024.3 

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  • グリース劣化モニタリングセンサ組み込み転がり軸受の開発

    戸根 勇也, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • AE法によるスラスト軸受運転状態のセンシング

    宮本 佳祐, 呂 仁国, 谷 弘詞, 川田 将平, 小金沢 新治

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 着脱可能なタイヤ組み込み用摩擦発電機の開発

    谷 弘詞, 杉本 睦樹, 藤原 崇博, 川田 将平, 呂 仁国, 小金沢 新治

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 熱アシスト磁気記録におけるAC電場を用いたヘッドスメア低減に関する研究

    幸 優人, 谷 弘詞, 川田 将平, 呂 仁国, 小金沢 新治

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 摩擦発電機で動作するエアタグ組み込みシューズの開発

    信岡 祐哉, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 適応制御によるHDDの高周波数外乱の低減に関する研究

    船井 健生, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 振動駆動による斜板脚アクチュエータの研究

    坪井 穂宮, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • 凹凸球面接触を利用した磁歪型振動センサの曲げ応力の低減

    畑中 雅也, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • タイヤ内面の圧電フィルムによるタイヤ荷重の推定

    嶋内 友哉, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • テクスチャリングした表面におけるトライボフィルムの解析

    李 茜茹, 呂 仁国, 谷 弘詞, 川田 将平, 小金沢 新治

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2024.3 

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  • Ionic liquid and pvdf composite films for triboelectric nanogenerator

    Hiroshi Tani, Yangwei Zhu, Shouhei Kawada, Renguo Lu, Shinji Koganezawa

    The 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2024)  2023.12 

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  • Improvement in Power Generation Capability of a Self-Powered Vibration Sensor for Bridge Structural Health Monitoring System

    Masaya Hatanaka, Shinji Koganezawa, Hiroshi Tani, Renguo Lu, Shouhei Kawada

    The 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2024)  2023.12 

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  • Active Control of Friction Coefficient under Lubricated with Ionic Liquids

    Shouhei Kawada, Shunsuke Tanji, Kazuki Akamatsu, Masaaaki Miyatake, Shinya Sasaki

    2023 STLE Tribology Frontiers Conference  2023.11 

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  • LSTM-Driven Vehicle Counting for Bridge Health Monitoring with a Magnetostrictive Vibration Sensor

    Shinji Koganezawa, Futa Matsumoto, Hiroshi Tani, Renguo Lu, Shouhei Kawada

    2023 IEEE SENSORS  2023.10 

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  • In-situ Observation of Electric-Field-Driven Behavior of Lubricant Molecules

    Chencheng Wu, Kazufumi Kontani, Renguo Lu, Shouhei Kawada, Hiroshi Tani, Shinji Koganezawa

    9th International Tribology Conference  2023.9 

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  • In-situ Observation of Electric-Current-Induced Decomposition of Lubricants

    Kento Imai, Renguo Lu, Shouhei Kawada, Hiroshi Tani, Shinji Koganezawa

    9th International Tribology Conference  2023.9 

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  • Improvement of Perfluoroplyether Lubricant Adsorption on Graphene Overcoat by Ultraviolet and Heat Treatment

    Hiroshi Tani, Keiji Kawata, Shouhei Kawada, Renguo Lu, Shinji Koganezawa, Norio Tagawa

    9th International Tribology Conference  2023.9 

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  • Improvement of Wear Resistance of High Strength Brass by Friction Stir Processing

    Masaya Hirukawa, Masaaki Miyatake, Shouhei Kawada, Shinya Sasaki

    9th International Tribology Conference  2023.9 

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  • Lubricating Mechanism of Silicone-containing Ionic Liquids as Lubricant Additives

    Makoto Morishita, Shouhei Kawada, Renguo Lu, Shinji Koganezawa, Hiroshi Tani, Gen Masuda

    9th International Tribology Conference  2023.9 

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  • Lubrication System Using an Electric Double Layer of Ionic Liquid

    Shouhei Kawada

    The 5th Japan-Taiwan Tribology Symposium 2023  2023.9 

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  • 構造健全性診断システムのための自立型センサデバイスの磁気回路設計

    小金沢新治, 林拓磨, 谷弘詞, 呂仁国, 川田将平

    日本機械学会2023年度年次大会  2023.9 

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  • タイヤ内面に取付けた圧電センサを用いたタイヤ路面間摩擦係数の推定

    谷弘詞, 川上凌, 川田将平, 呂仁国, 小金沢新治

    日本機械学会年次大会2023  2023.9 

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  • 摩擦攪拌プロセスによる高力黄銅の耐摩耗性向上に関する研究 -FSP後の表面加工の影響-

    蛭川誠也, 宮武正明, 川田将平, 佐々木信也

    日本トライボロジー会議2023春東京  2023.5 

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  • 摩擦帯電センサ組込軸受の開発

    谷弘詞, 戸根勇也, 川田将平, 呂仁国, 小金沢新治

    日本トライボロジー会議2023春東京  2023.5 

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  • Effect of Humidity on Head Smear Generation in Head Assisted Magnetic Recording

    Hiroshi Tani, Hiroshi Kurafuji, Norio Tagawa, Shouhei Kawada, Renguo Lu, Shinji Koganezawa

    Intermag 2023  2023.5 

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  • Feasibility study of reduction in sound-pressure induced vibration in hard disk drives using an adaptive feed-forward control

    Shinji Koganezawa, ,Kensei Funai, Hiroshi Tani, Renguo Lu, Shouhei Kawada

    Intermag 2023  2023.5 

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  • 電食防止軸受の開発

    谷弘詞, 戸根勇也, 川田将平, 呂仁国, 小金沢新治

    日本トライボロジー会議2023春東京  2023.5 

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  • Active Control of Friction Coefficient under Ionic Liquids Lubrication Using Surface Potential

    Shouhei Kawada, Shunsuke Tanji, Masaaki Miyatake, Shinya Sasaki

    TRIBOLOGY 2023  2023.4 

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  • Lubricating performances of cyano-based ionic liquids as lubricant additives for non-polar base oil

    2023.4 

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  • 並列圧電フィルムによるタイヤ摩耗の推定

    嶋内 友哉, 細田 昂希, 谷 弘詞, 川田 将平, 呂 仁国, 小金沢 新治

    2022年度関西学生会卒業研究発表講演会  2023.3 

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  • 潤滑油添加剤としてのフッ素フリーイオン液体の摩擦摩耗低減メカニズム

    森下 真琴, 川田 将平, 呂 仁国, 小金沢 新治, 谷 弘詞, 増田 現

    2022年度関西学生会卒業研究発表講演会  2023.3 

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  • 電場における油性剤分子挙動のその場観察

    陳誠, 紺谷 和史, 呂 仁国, 川田 将平, 谷 弘詞, 小金沢 新治

    2022年度関西学生会卒業研究発表講演会  2023.3 

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  • 潤滑油のトライボ化学分解に及ぼす摺動面電流の影響

    今井 健人, 呂 仁国, 川田 将平, 谷 弘詞, 小金沢 新治

    2022年度関西学生会卒業研究発表講演会  2023.3 

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  • 摩擦発電機を用いた通過人数計測マットの開発

    信岡 祐哉, 川上 凌, 谷 弘詞, 川田 将平, 呂 仁国, 小金沢 新治

    2022年度関西学生会卒業研究発表講演会/第98期定時総会講演会  2023.3 

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  • カプセル内視鏡の自走化アクチュエータの研究

    一圓 貴晶, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 橋梁の健全性診断のための自立型振動センサの発電性能の改善

    池田 幸穂, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 電食防止軸受の開発

    谷 弘詞, 戸根 勇也, 川田 将平, 呂 仁国, 小金沢 新治

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 並列配置型圧電フィルムによるタイヤ摩耗状態の推定

    細田 昂希, 嶋内 友哉, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平, 藤原 崇博, 杉岡 恭太, 黒田 賢一, 杉本 睦樹

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • イオン液体添加 PVDF ポーラス膜による摩擦発電出力の向上

    朱 洋威, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 摩擦発電マットを用いた入退室判別システムの開発

    川上 凌, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平, 黒木 崇史, 中尾 凌, 南山 偉明

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • グラフェン保護膜の潤滑膜の吸着とヘッドスメアに関する研究

    河田 圭司, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • ToF-SIMS によるポリフェニルエーテルのトライボ反応膜の解析

    紺谷 和史, 吴 陳誠, 呂 仁国, 川田 将平, 谷 弘詞, 小金沢 新治

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • Ar-GCIB を用いた HDI における有効弾性率測定

    谷 弘詞, 川田 将平, 呂 仁国, 小金沢 新治, 多川 則男

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 橋梁振動波形解析による橋上通行車両の車種分析

    松本 楓太, 小金沢 新治, 谷 弘詞, 呂 仁国, 川田 将平

    情報・知能・精密機器部門講演会 IIP2023  2023.3 

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  • 高温加熱された摩擦場におけるDC電場の影響

    泉谷裕毅, 谷 弘詞, 小金沢 新治, 呂 仁国, 川田 将平

    日本機械学会情報・知能・精密機器部門講演会 IIP2024  2023.3 

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  • Effects of alkyl chain length of ionic liquids on tribological properties in combined oil of ZDDP and ionic liquid under boundary lubrication

    Kaisei Sato, Hikaru Okubo, Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    11th International Conference on Industrial Tribology (ICIT)-IndiaTrib-2022  2022.12 

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  • 潤滑油添加剤としてのイオン液体の開発

    川田将平, 呂仁国, 小金沢新治, 谷弘詞, 佐藤魁星, 宮武正明, 佐々木信也, 増田現

    トライボロジー会議秋2022福井  2022.11 

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  • レーザ加熱・交流電場下におけるDLC摩擦によるポリイン・グラフェン複合膜の生成

    谷弘詞, 泉谷裕毅, 池本真規, 川田将平, 呂仁国, 小金沢新治, 多川則男

    トライボロジー会議秋2022福井  2022.11 

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  • 漆に六方晶窒化ホウ素を添加した摺動材料の摩擦・摩耗特性に関する研究

    永田泰之, 川田将平, 宮武正明, 佐々木信也, 吉本成香

    トライボロジー会議秋2022福井  2022.11 

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  • エンドミル直接支持型超高速静圧空気軸受スピンドルに関する研究

    佐々木崚, 佐々木大樹, 川田将平, 宮武正明, 吉本成香

    トライボロジー会議秋2022福井  2022.11 

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  • 表面電位制御によるイオン液体の摩擦挙動操作

    丹治隼輔, 川田将平, 宮武正明, 佐々木信也

    トライボロジー会議秋2022福井  2022.11 

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  • シアノ系イオン液体の潤滑特性に対する相対湿度の影響

    川田将平, 丹治隼輔, 小林生, 宮武正明, 佐々木信也

    トライボロジー会議秋2022福井  2022.11 

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  • 摺動面の電流制御によるポリフェニルエーテルのトライボロジー特性の評価

    紺谷和史, 呂仁国, 川田将平, 谷弘詞, 小金沢新治, 多川則男

    トライボロジー会議秋2022福井  2022.11 

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  • 橋梁の健全性診断のための自立型振動センサの改良設計

    畑中雅也, 小金沢新治, 谷弘詞, 呂仁国, 川田将平

    日本機械学会2022年度年次大会2022  2022.9 

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  • 熱分解GC/MSによるPFPE潤滑剤の熱分解分析

    谷弘詞, 館健治, 多川則男, 川田将平, 呂仁国, 小金沢新治

    日本機械学会2022年度年次大会2022  2022.9 

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  • 適応制御によるHDD冷却ファン起因振動による位置決め誤差の低減

    船井健生, 小金沢新治, 谷弘詞, 呂仁国, 川田将平

    日本機械学会2022年度年次大会2022  2022.9 

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  • 電流印加時の潤滑油分子挙動のその場観察

    紺谷和史, 吴陳誠, 呂仁国, 川田将平, 谷弘詞, 小金沢新治, 多川則男

    日本機械学会2022年度年次大会2022  2022.9 

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  • Relationship between lubricating properties and relative humidity under lubrication with ionic liquids

    Shouhei Kawada, Shunsuke Tanji, Jyo Kobayashi, Masaaki Miyatake, Shinya Sasaki, Renguo Lu, Shinji Koganezawa, Hiroshi Tani

    THE 22ND INTERNATIONAL VACUUM CONGRESS (IVC-22)  2022.9 

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  • Monitoring radial load force of rolling bearing using triboelectric sensor

    Yuya Tone, Hiroshi Tani, Shinji Koganezawa, Renguo Lu, Shouhei Kawada

    2022 JSME-IIP/ASME-ISPS Joint International Conference on micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Improvement of self-powered vibration sensing device for structural health monitoring

    Saho Ikeda, Masaya Hatanaka, Shinji Koganezawa, Shouhei Kawada, Renguo Lu, Hiroshi Tani, Norio Tagawa

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Estimation of tire wear using multiple tribocharge sensors mounted inside tire

    Koki Hosoda, Hiroshi Tani, Renguo Lu, Shinji Koganezawa, Shouhei Kawada, Norio Tagawa, Takahiro Fujiwara, Kyota Sugioka, Kenichi Kuroda, Matsuki Sugimoto, Yukio Nakao

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Development of counting system of people passing on floor mat using triboelectric power generation

    Ryo Kawakami, Hiroshi Tani, Shouhei Kawada, Renguo Lu, Shinji Koganezawa, Norio Tagawa

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • External electric field effect to head smear generated from disk with PFPE lubricant film in heat-assisted magnetic recording

    Hiroshi Tani, Makoto Toyoda, Shouhei Kawada, Renguo Lu, Shinji Koganezawa, Norio Tagawa

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Effects of Oxygen Concentration on Smear Formation in HAMR System

    Kenji Yakata, Hiroshi Kurafuji, Hiroshi Tani, Renguo Lu, Shinji Koganezawa, Shouhei Kawada, Norio Tagawa

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Effect of electric current on friction behavior of lubricant molecules

    Renguo Lu, Kazufumi Kontani, Hiroshi Tani, Shouhei Kawada, Shinji Koganezawa, Norio Tagawa

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Control of Electric Double Layer formed in Ionic Liquids at Frictional Interface

    Shunsuke Tanji, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • An inclined-legs actuator inspired by Setaria viridis

    Hotaka Tsuboi, Shinji Koganezawa, Hiroshi Tani, Renguo Lu, Shouhei Kawada

    2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)  2022.8 

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  • Improvement of Wear Resistance of High Strength Brass Alloy by Friction Stir Processing

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Effect of Relative Humidity on Lubricating Performances of Halogen-Free Ionic Liquids

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Development of Non-Contact Floating Mechanism Utilizing Squeeze Film Levitation under Vacuum Environment

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Tribological Performance of Natural Resin Urushi containing Solid Lubricant under Dry Condition and Water Lubricated Condition

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Numerical Study on Static and Dynamic Characteristics of Water Lubricated Hydrostatic Thrust Bearings

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Friction Control by Applied Potential on Friction Surface under Lubrication with Ionic Liquids

    7th WORLD TRIBOLOGY CONGRESS  2022.7 

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  • Arガスクラスターイオンビームを用いた脂肪酸吸着膜の弾性率測定

    谷弘詞, 川田将平, 呂仁国, 小金沢新治, 多川則男

    トライボロジー会議2022春東京  2022.5 

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  • 加速度センサを用いたタイヤ接地面振動のモニタ

    西浦章平, 谷弘詞, 川田将平, 呂仁国, 小金沢新治

    日本機械学会関西支部第97期定時総会講演会  2022.3 

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  • 熱アシスト磁気記録におけるヘッドスメア発生メカニズムに関する研究(湿度の影響)

    蔵藤裕志, 谷弘詞, 川田将平, 呂仁国, 小金沢新治, 多川則男

    日本機械学会関西支部第97期定時総会講演会  2022.3 

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  • 熱アシスト記録におけるヘッドスメア発生に対する外部電場の影響

    豊田眞實, 谷弘詞, 川田将平, 呂仁国, 小金沢新治, 多川則男

    日本機械学会関西支部第97期定時総会講演会  2022.3 

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  • 高架橋の健全性診断のための自立型振動センサの高出力化の検討

    畑中雅也, 小金沢新治, 谷弘詞, 呂仁国, 多川則男, 川田将平

    日本機械学会関西支部2021年度関西学生会卒業研究発表講演会  2022.3 

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  • 摩擦帯電センサを用いた転がり軸受のラジアル荷重モニタ

    戸根勇也, 谷弘詞, 小金沢新治, 呂仁国, 川田将平, 多川則男

    日本機械学会関西支部2021年度関西学生会卒業研究発表講演会  2022.3 

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  • 交流電場中のDLC膜の摩擦特性

    池本真規, 谷弘詞, 呂仁国, 小金沢新治, 川田将平

    日本機械学会関西支部2021年度関西学生会卒業研究発表講演会  2022.3 

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  • 適応制御によるHDD冷却ファン起因振動による位置決め誤差の低減

    船井健生, 小金沢新治, 谷弘詞, 呂仁国, 川田将平, 多川則男

    日本機械学会関西支部2021年度関西学生会卒業研究発表講演会  2022.3 

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  • カプセル内視鏡の自走化アクチュエーター

    坪井穂宮, 小金沢新治, 谷弘詞, 多川則男, 呂仁国, 川田将平

    日本機械学会関西支部2021年度関西学生会卒業研究発表講演会  2022.3 

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  • 電気二重層を利用した新規イオン液体潤滑システムの開発

    丹治隼輔, 川田将平, 宮武正明, 佐々木信也

    日本機械学会 関東支部 第28期総会・講演会  2022.3 

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  • イオン液体添加PVDF複合膜による摩擦発電出力の向上

    朱洋威, 谷弘詞, 小金沢新治, 呂仁国, 川田将平, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • 通過人数計測用摩擦発電マットの開発

    川上 凌, 谷弘詞, 小金沢新治, 呂仁国, 川田将平, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • 橋梁の健全性診断のための自立型振動センサの発電性能の向上

    池田幸穂, 小金沢新治, 川田将平, 呂仁国, 谷弘詞, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • 摺動部の通電による脂環式カルボン酸減摩効果の向上

    紺谷和史, 宮本隆之介, 呂仁国, 川田将平, 谷弘詞, 小金沢新治, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • Ar-GCIBを用いた脂肪酸吸着膜の弾性率測定

    谷弘詞, 呂仁国, 川田将平, 小金沢新治, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • 摩擦帯電センサを用いた転がり軸受のラジアル荷重モニタ

    岡崎涼平, 谷弘詞, 小金沢 新治, 呂仁国, 川田将平, 多川則男

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • 複数の摩擦帯電センサによるタイヤ摩耗状態の推定

    細田 昂希, 谷弘詞, 呂 仁国, 小金沢新治, 川田将平, 多川則男, 藤原崇博, 杉岡恭太, 黒田賢一, 杉本睦樹, 中尾幸夫

    日本機械学会情報知能精密機械部門講演会  2022.3 

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  • トライボロジー現象の解明と制御へのトライ〜潤滑油存在下における⽔の役割とは︖〜

    川田将平

    東京理科⼤学 ウォーターフロンティア研究センター 第4回イブニングセミナー  2022.1 

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  • Lubricating Properties of Electrical Double Layer of Ionic Liquids on Friction Interface

    Shunsuke Tanji, Jun Yamada, Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    2021.12 

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  • Effect of Water on Lubricating Properties of Hydrophobic Ionic Liquids and Hydrophilic Ionic Liquids

    Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki

    2021.12 

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  • Evaluation of Friction Reduction Effect by Ionic Liquids as Lubricant Additives

    Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki, Gen Masuda

    2021.11 

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  • イオン液体の摩擦界面構造に着目した新たな潤滑システム構築への試み

    川田将平, 丹治隼輔, 宮武正明, 佐々木信也

    2021.11 

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  • 漆にグラファイトを添加した摺動材料の摩擦・摩耗特性に関する研究(ドライおよび水潤滑における評価)

    佐々木秀, 川田将平, 宮武正明, 佐々木信也, 吉本成香

    2021.10 

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  • ケイ素含有リン酸系イオン液体の潤滑油添加剤およびグリース添加剤としての潤滑特性

    川田将平, 佐藤魁星, 宮武正明, 佐々木信也, 増田現

    2021.10 

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  • 摩擦帯電センサによるタイヤ摩耗量の推定

    細田昂希, 谷弘詞, 杉本睦樹, 藤原崇博, 杉岡恭太, 中尾幸夫, 川田将平, 呂仁国, 小金沢新治, 多川則男

    2021.10 

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  • 真空環境下におけるスクイーズ膜浮上を用いた非接触保持機構の開発

    小川亮太, 川田将平, 宮武正明, 吉本成香

    2021.10 

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  • 単一給気孔を持つ静圧空気スラスト軸受の軸受特性に関する数値的研究

    御代禎広, 宮武正明, 川田将平, 吉本成香

    2021.10 

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  • 水潤滑静圧スラスト軸受の軸受特性に関する数値的研究

    上田英聖, 川田将平, 宮武正明, 吉本成香

    2021.10 

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  • 摩擦攪拌プロセスによる高力黄銅CAC304Cの耐摩耗性向上に関する研究

    浅井玲, 山本康太, 川田将平, 井上遼, 宮武正明, 佐々木信也, 吉本成香

    2021.10 

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  • イオン液体の摩擦界面構造と潤滑特性の評価および摩擦界面構造の制御

    川田将平, 丹治隼輔, 宮武正明, 佐々木信也

    2021.9 

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  • 真空中におけるステンレス鋼の摩擦・摩耗特性に対するイオン液体の影響

    丹治隼輔, 川田将平, 宮武正明, 佐々木信也

    2021.9 

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  • 境界潤滑下における摩擦係数の能動的制御

    川田将平, 宮武正明, 佐々木信也

    関西潤滑懇談会7月例会  2021.7 

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  • Tribological Performances of 3-(Trimethylsilyl)-1-Propanephosphate Anion Based Ionic Liquids as Lubricant Additives International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake, Gen Masuda

    2020 STLE Tribology Frontiers Virtual Conference  2020.11 

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    Venue:Online (US Central Time)  

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  • 粘性真空ポンプ機能を持つ非接触シールの動的特性に関する数値的研究

    露木峻正、川田将平、宮武正明、吉本成香

    トライボロジー会議2020秋 別府  2020.11 

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    Venue:別府(オンライン)  

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  • エンドミル加工時における静圧空気スピンドルの振れ精度に関する研究

    エンドミル加工時における静圧空気スピンドルの振れ精度に関する研究

    トライボロジー会議2020秋 別府  2020.11 

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    Venue:別府(オンライン)  

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  • Tribological Performances of 3-(Trimethylsilyl)-1-Propanephosphate Anion Based Ionic liquids as Lubricant Additives

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake, Gen Masuda

    2020.11 

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  • イオン液体潤滑下における摩擦係数の能動的制御

    川田将平、佐々木信也、宮武正明

    2020年 日本表面真空学会 学術講演会  2020.11 

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    Venue:オンライン  

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  • アルキル鎖長の異なるイオン液体がZDDP併用添加油の摩擦・摩耗特性に与える影響

    佐藤魁星、佐藤優子、川田将平、渡部誠也、佐々木信也

    トライボロジー会議2020秋 別府  2020.11 

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    Venue:別府(オンライン)  

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  • イオン液体の潤滑性に対する相対湿度の影響

    小林生、川田将平、宮武正明、佐々木信也

    トライボロジー会議2020秋 別府  2020.11 

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  • 2019 STLE TFC

    川田 将平

    2020.10 

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  • Treatment of Deteriorated Cutting Fluid by Atmospheric-Pressure Plasma and in-Liquid Plasma

    Junji Miyamoto, Ryo Tsuboi, Shouhei Kawada and Masashi Yoshida

    日本表面真空学会スパッタリングおよびプラズマプロセス技術部会  2019.12 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:東京  

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  • Study on Lubricant Supply System for Vacuum Compatible Fluid Film Bearings International conference

    Sato Daiki, Shouhei Kawada, Masaaki Miyatake and Shigeka Yoshimoto

    2019 STLE Tribology Frontiers Conference  2019.10 

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    Venue:シカゴ  

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  • Tribological Properties of cyano-Based Ionic Liquids as Lubricant Additives International conference

    Shouhei Kawada, Shinya Sasaki and Masaaki Miyatake

    2019 STLE Tribology Frontiers Conference  2019.10 

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    Venue:シカゴ  

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  • Lubricating Performance of Japanese Lacquer (Urushi) Under Dry and Water Lubrication International conference

    Akinori Sakai, Shouhei Kawada, Masaaki Miyatake, Shinya Sasaki and SHigeka Yoshimoto

    2019 STLE Tribology Frontiers Conference  2019.10 

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    Venue:シカゴ  

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  • Effect of Surrounding Atmosphere on Friction Properties of Hydrophobic and Hydrophilic Ionic Liquids International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    International Tribology Conference Sendai 2019  2019.9 

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    Venue:仙台  

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  • FM-AFM observation on effect of water on adsorption layer of hydrophobic and hydrophilic ionic liquids International conference

    Shouhei Kawada, Yuko Sato, Masaaki Miyatake, Shinya Sasaki

    46th Leeds Lyon Symposium on Tribology  2019.9 

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    Venue:フランス リヨン  

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  • NON-CONTACT HANDLING EQUIPMENT UTILIZING ULTRASONIC SQUEEZE FILM LEVITATION International conference

    Yusaku Katayama, Shouhei Kawada, Masaaki Miyatake, C. Mares, T. Stolarski, Shigeka Yoshimoto

    46th Leeds Lyon Symposium on Tribology  2019.9 

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    Venue:フランス リヨン  

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  • Numerical and Experimental Study on a Reduction Method of Power Consumption of Water Lubricated Hydrostatic Thrust Bearings International conference

    Naoki Hirata, Rashid AlZarooni, Yusuke Asakawa, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    International Tribology Conference Sendai 2019  2019.9 

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    Venue:仙台  

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  • Numerical and Experimental Study on Run-Out of a Milling Spindle Supported by Aerostatic Bearings in End Milling Process International conference

    Keita Shimada, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    Internatiobal Tribology Conference Sendai 2019  2019.9 

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    Venue:仙台  

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  • Treatment of Deteriorated Cutting Fluid by Atmospheric-Pressure Plasma and in-Liquid Plasma International conference

    Junji Miyamoto, Ryo Tsuboi, Shouhei Kawada and Masashi Yoshida

    The 15th International Symposium on Sputtering and Plasma Processes  2019.6 

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    Venue:Kanazawa  

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  • Tribological Performance of Halogen-free Ionic Liquids Consisted of Phosphonium Cation and Cyanide Anion International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    European Conference on Tribology - ECOTRIB 2019  2019.6 

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    Venue:ウィーン  

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  • ホウ素含有イオン液体による摩擦低減効果(第4報)

    渡邉保奈美, 小野寺康, 佐藤剛久, 佐藤魁星, 川田将平, 佐々木信也

    トライボロジー会議2019春 東京  2019.5 

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    Venue:東京  

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  • イオン液体の潤滑特性に周囲雰囲気が及ぼす影響の調査

    川田将平、佐々木信也、宮武正明

    トライボロジー会議2019春 東京  2019.5 

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    Venue:東京  

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  • 金属粉末焼結3Dプリンタを用いた空気軸受の開発

    宮武正明、川田将平、佐々木信也、吉本成香

    トライボロジー会議2019春 東京  2019.5 

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    Venue:東京  

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  • Tribological Performances of Halogen-free Ionic Liquids against a-C:H and ta-C Film under Vacuum Condition International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)  2019.4 

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    Venue:Kagoshima  

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  • Contactless gripper using ultrasonic levitation for handling light objects International conference

    Yusaku Katayama,Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)  2019.4 

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    Venue:Kagoshima  

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  • Numerical and Experimental Study on Characteristics of a Milling Spindle Supported by Aerostatic Bearings International conference

    Keita Shimada, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)  2019.4 

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    Venue:Kagoshima  

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  • イオン液体の固液界面吸着構造と摩擦表面での摩擦化学反応

    川田将平、佐々木信也、宮武正明

    日本表面真空学会 2019年度 関東支部学術講演大会  2019.4 

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    Venue:東京理科大学  

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  • A Method of Reducing Windage Power Loss of a High-Speed Motor Using a Viscous Vacuum Pump International conference

    Junpei Horiike, Daiki Sato, Shouhei Kawada, Masaaki Miyatake, Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)  2019.4 

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    Venue:Kagoshima  

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  • Characteristics of Aerodynamic Foil Thrust Bearings Manufactured Using Direct Metal Printing Technology International conference

    Zheng Chuanyu, Alzarooni Rashid, Shouhei Kawada, Maasaaki Miyatake,Shigeka Yoshimoto

    The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)  2019.4 

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    Venue:Kagoshima  

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  • イオン液体添加によるZDDP含有油の潤滑性向上メカニズムの解明

    佐藤魁星、川田将平、佐々木信也

    日本機械学会 関東支部 第25期総会・講演会  2019.3 

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    Venue:千葉  

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  • 金属粉末焼結3Dプリンタを用いて製作した多孔質静圧空気軸受の軸受特性に関する研究-第2報-

    貞弘稜、中山将太、川田将平、宮武正明、佐々木信也、吉本成香

    トライボロジー会議2018秋 伊勢  2018.11 

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    Venue:伊勢  

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  • 漆を用いた摺動材料の摩擦・摩耗特性に関する研究(ドライおよび水潤滑における評価)

    堺章徳、川田将平、宮武正明、佐々木信也、吉本成香

    トライボロジー会議2018秋 伊勢  2018.11 

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    Venue:伊勢  

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  • 超高速回転静圧空気軸受スピンドルを用いたマイクロミーリング加工に関する研究

    青塚拓也、川田将平、宮武正明、吉本成香

    トライボロジー会議2018秋 伊勢  2018.11 

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    Venue:伊勢  

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  • 添加剤としてのZDDPとイオン液体併用におけるイオン液体構造変化の影響

    佐藤魁星、大久保光、川田将平、佐々木信也

    トライボロジー会議2018秋 伊勢  2018.11 

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    Venue:伊勢  

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  • Numerical Study on Run-Out of a Milling Spindle Supported by Aerostatic Bearings in End Milling Process International conference

    Hiroto TANISHIMA, Shouhei KAWADA, Masaaki MIYATAKE and Shigeka YOSHIMOTO

    The 8th International Conference on Positioning Technology(ICPT2018)  2018.11 

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    Venue:Ambassador Hotel,Kaohsiung,Taiwan  

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  • FM-AFM によるイオン液体ー水混合溶液の吸着構造の観察

    川田 将平、佐々木 信也、宮武 正明

    2018年日本表面真空学会学術講演会  2018.11 

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    Venue:神戸  

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  • 粘性真空ポンプを用いた高速回転モータの風損低減方法に関する研究

    堀池純平、川田将平、宮武正明、吉本成香

    トライボロジー会議2018秋 伊勢  2018.11 

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    Venue:伊勢  

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  • 摩擦雰囲気がイオン液体の潤滑特性に与える影響

    川田将平 佐々木信也 宮武正明

    第9回 イオン液体討論会  2018.10 

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    Venue:米子市  

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  • EFFECT OF SURFACE ELECTRIC POTENTIAL ON FRICTION COEFFICIENT OF IONIC LIQUIDS International conference

    Shouhei Kawada, Shuhei Ogawa, Shinya Sasaki

    The 6th ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY  2018.9 

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    Venue:マレーシア  

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  • Effects of zinc dialkyldithiophosphate (ZDDP) and ionic liquids with different cations on tribological properties under boundary lubrication International conference

    Kaisei Sato, Hikaru Okubo, Shouhei Kawada, Shinya Sasaki

    45st LEEDS-LYON SYMPOSIUM on TRIBOLOGY  2018.9 

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    Venue:英国ーリーズ  

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  • 表面電位がイオン液体の潤滑特性に与える影響 International conference

    川田将平、佐々木信也、宮武正明

    日本機械学会 2018年度年次大会  2018.9 

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    Venue:関西大学  

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  • Effect of water on adsorption layer of ionic liquid on mica International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    Water on Materials Surface 2018  2018.7 

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    Venue:東京  

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  • Lubricating performance of cyano-based ionic liquids on nascent surface International conference

    Shouhei Kawada, Shinya Sasaki

    The 18th Nordic Symposium on Tribology – NORDTRIB 2018  2018.6 

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    Venue:スウェーデン ウプサラ大学  

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  • Effect of Water on Adsorption Layer Structure of Ionic Liquid International conference

    Shouhei Kawada, Shinya Sasaki, Masaaki Miyatake

    22nd International Symposium on Surfactants in Solution  2018.6 

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    Venue:オクラホマシティ  

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  • 境界潤滑下における潤滑特性に対するイオン液体添加の影響

    佐藤魁星、大久保光、川田将平、平田祐樹、佐々木信也

    トライボロジー会議2018春 東京  2018.5 

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    Venue:東京  

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  • マイカ上のイオン液体吸着層に水が及ぼす影響

    川田将平、佐々木信也、宮武正明

    トライボロジー会議2018春 東京  2018.5 

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    Venue:東京  

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  • 金属粉末焼結3Dプリンタを用いて製作した動圧型空気フォイルスラスト軸受の軸受特性に関する研究

    臼井 智哉、宮武 正明、佐々木 信也、川田 将平、吉本 成香

    トライボロジー会議2018春 東京  2018.5 

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    Venue:東京、国立オリンピック記念青少年総合センター  

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  • 金属粉末焼結3Dプリンタを用いて製作した多孔質静圧空気軸受の軸受特性に関する研究

    貞弘 稜、中山 将太、宮武 正明、佐々木 信也、川田 将平、吉本 成香

    トライボロジー会議2018春 東京  2018.5 

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    Venue:東京、国立オリンピック記念青少年総合センター  

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  • ホウ素含有イオン液体による摩擦低減効果(第3報)

    渡邉保奈美、小野寺康、佐藤剛久、川田将平、佐々木信也

    2018.5 

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  • ホウ素含有イオン液体による摩擦低減効果(第3報)

    渡邉保奈美, 小野寺康, 佐藤剛久, 川田将平, 佐々木信也

    トライボロジー会議2018春 東京  2018.4 

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    Venue:東京  

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  • イオン液体の潤滑特性に水が及ぼす影響

    川田将平,佐々木信也,宮武正明

    日本機械学会 第18回機素潤滑設計部門講演会  2018.4 

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    Venue:山形  

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  • 境界潤滑下におけるZDDPの潤滑性に及ぼすイオン液体添加の影響

    佐藤魁星、大久保光、川田将平、平田祐樹、佐々木信也

    日本機械学会 第18回機素潤滑設計部門講演会  2018.4 

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    Venue:山形  

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  • イオン液体の界面構造に水が及ぼす影響

    川田将平 佐々木信也 宮武正明

    日本表面科学会第3回関東支部講演大会  2018.4 

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    Venue:東京  

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  • 外部電圧がイオン液体の摩擦特性に与える影響

    小川修平、川田将平、佐々木信也

    日本機械学会関東支部第24期総会講演会  2018.3 

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    Venue:東京  

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  • Effect of water on interfacial structure of room-temperature ionic liquids International conference

    S. Kawada, E. Kodama, K. Sato, H. Okubo, S. Sasaki

    11th International Symposium on Atomic Level Characterizations for New Materials and  2017.12 

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    Venue:ハワイ  

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  • シアノ系イオン液体のta-C DLCに対する低摩擦発現メカニズムの調査

    川田将平 佐藤佳介 大久保光 佐々木信也

    トライボロジー会議秋2017  2017.11 

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    Venue:高松  

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  • ハロゲンフリーイオン液体の潤滑特性に関する研究

    川田将平、佐々木信也

    イオン液体討論会  2017.11 

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    Venue:東京  

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  • Lubricating Mechanism of Cyano-based Ionic Liquids on various Sliding Materials International conference

    Shouhei Kawada, Hikaru Okubo, Seiya Watanabe, Shinya Sasaki

    サステイナブルトライボロジー会議2017  2017.10 

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    Venue:奄美大島  

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  • Tribo-chemistry of Cyano-based Ionic Liquids on Sliding Surface International conference

    Shouhei Kawada, Keisuke Sato, Hikaru Okubo, Seiya Watanabe, Shinya Sasaki

    The 8th International Symposium on Surface Science  2017.10 

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    Venue:茨城  

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  • 電圧印加による境界潤滑下でのイオン液体の摩擦特性制御

    小川修平 川田将平 佐々木信也

    日本機械学会 2017年度年次大会  2017.9 

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    Venue:埼玉  

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  • Tribological Property of Cyano-based Ionic Liquids under Various Environment International conference

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    6th World Tribology Congress  2017.9 

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    Venue:中国  

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  • The effect of molecular orientation of imidazolium-base ionic liquids under lubricating condition on frictional property International conference

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Shinya Sasaki

    Faraday Discussion  2017.9 

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    Venue:ロンドン  

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  • Lubricating property of cyanobased ionic liquids against tetrahedral amorphous carbon film International conference

    S. Kawada, S. Watanabe, Y. Hirata, S. Sasaki

    Ecotrib2017  2017.6 

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    Venue:スロベニア  

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  • 電圧印加がイオン液体の摩擦特性に与える影響 International conference

    小川修平 川田将平 佐々木信也

    トライボロジー会議春2017  2017.5 

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    Venue:東京  

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  • Newly synthesized Ionic Liquids (ILs) as friction modifier for automobile lubricants International conference

    Pankaj Baghel, Hirofumi Kondo, Kouki Hatsuda, Nobuo Tano, Shinya Sasaki, Shouhei Kawada

    2017 STLE Annual Meeting and Exhibition  2017.5 

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    Venue:ATLANTA  

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  • シアノ系イオン液体の潤滑特性向上に関する研究

    川田将平 渡部誠也 佐々木信也

    トライボロジー会議春2017  2017.5 

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    Venue:東京  

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  • Lubricating property of cyano-based ionic liquids against hard materials International conference

    S. KawadaS, Watanabe, Y. Hirata, S. Sasaki

    The 7th International Conference on Manufacturing Machine Design and Tribology Proceedings  2017.4 

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    Venue:韓国  

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  • イオン液体の構造が摩擦・摩耗特性に及ぼす影響

    川田将平, 佐々木信也

    JAST摩耗研究会  2016.12 

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    Venue:東京理科大学  

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  • シアノ系アニオンを有するイオン液体の摩擦特性および摩擦分解挙動

    川田将平 渡部誠也 佐々木信也

    2016 真空・表面科学合同講演会 第36回表面科学学術講演会・第57回真空に関する連合講演会  2016.11 

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    Venue:愛知  

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  • イオン液体の潤滑剤への応用に関する研究

    川田将平 渡部誠也 佐々木信也

    サステイナブルトライボロジー会議2016  2016.10 

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    Venue:奄美大島  

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  • イオン液体の潤滑特性および摩擦面での反応について

    川田将平 渡部誠也 佐々木信也

    イオン液体討論会  2016.10 

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    Venue:金沢  

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  • ta-c膜に対するシアノ系イオン液体の潤滑メカニズム

    川田将平 渡部誠也 佐々木信也

    トライボロジー会議秋2016予稿集  2016.10 

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    Venue:新潟  

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  • Effect of Sliding Materials on Lubricity of Halogen-Free Ionic Liquids International conference

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    Asia-Pacific Conference on Fracture and Strength 2016  2016.9 

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    Venue:富山  

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  • Control of ionic liquid lubrication by applying electric field International conference

    S. Ogawa, S. Kawada, S. Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)  2016.5 

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    Venue:シドニー  

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  • Control of ionic liquidlubrication by applying electric field International conference

    Shuhei Ogawa, Shouhei Kawada, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)  2016.5 

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    Venue:シドニー  

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  • Dynamic Observation of Ionic Liquids at Friction Interface by Sum-frequency Generation Spectroscopy International conference

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)  2016.5 

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    Venue:シドニー  

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  • Relationship between tribo-decomposition and friction property of cyano-based ionic liquids International conference

    Shouhei Kawada, Seiya Watanabe, Shinya Sasaki

    7th Australian Symposium on Ionic Liquids (ASIL7)  2016.5 

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    Venue:シドニー  

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  • 電場付加によるイオン液体の潤滑特性制御

    小川修平 佐々木信也 田所千治 川田将平

    日本機械学会第16回機素潤滑設計部門講演会  2016.4 

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    Venue:福井  

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  • 非フッ素系無機酸を有するイオン液体の摩擦分解および摩擦特性の評価

    川田将平 渡部誠也 佐々木信也

    日本機械学会第16回機素潤滑設計部門講演会  2016.4 

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    Venue:福井  

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  • イオン液体の金属摩擦面での反応について

    川田将平 渡部誠也 田所千治 佐々木信也

    第35回表面科学学術講演会  2015.12 

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    Venue:茨城  

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  • In-situ Analysis of Friction Interface using Sum Frequency Generation Spectroscopy International conference

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    International Tribology Conference 2015  2015.9 

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    Venue:東京  

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  • Tribochemical Reaction of Halogen-free Ionic Liquids including Sulfur or Phosphorus International conference

    Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    ITC2015  2015.9 

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    Venue:東京  

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  • Tribological Properties of Halogen-free Ionic Liquids International conference

    Shouhei Kawada, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    ITC2015  2015.9 

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    Venue:東京  

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  • Lubricity of Halogen-free Ionic Liquids International conference

    Shouhei Kawada, Seiya Watanabe, Chiharu Tadokoro, Shinya Sasaki

    Ecotrib2015  2015.6 

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    Venue:スイス  

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  • ハロゲンフリーイオン液体の分解および摩擦特性

    川田将平 一瀬友佑 渡部誠也 田所千治 佐々木信也 近藤洋文

    トライボロジー会議春2015  2015.5 

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    Venue:姫路  

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  • Effect of water mixed with ionic liquid on corrosive wear International conference

    Seiya Watanabe, Miki Nakano, Koji Miyake, Shouhei Kawada, Chiharu Tadokoro, Shinya Sasaki

    20th International Conference on Wear of Materials 2015  2015.4 

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    Venue:トロント  

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  • Lubricating Mechanism of Halogen-free Ionic Liquids International conference

    S. Kawada, Y. Ichise, S. Watanabe, C. Tadokoro, S. Sasaki

    The 7th International Symposium on Surface Science  2014.11 

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    Venue:島根  

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  • Tribochemical Decomposition of Halogen-free Ionic Liquids on Nascent Steel Surface International conference

    Shouhei Kawada, Yusuke Ichise, Yuriko Kondo, Seiya Watanabe, Ryo Tsuboi, Shinya Sasaki

    20th International Symposium on Surfactants in Solution  2014.6 

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    Venue:ポルトガル  

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  • トライボフィルムに着目したハロゲンフリーイオン液体の潤滑メカニズム

    一瀬友佑 川田将平 近藤ゆりこ 渡部誠也 坪井涼 佐々木信也

    トライボロジー会議春2014  2014.5 

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    Venue:東京  

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  • 真空中におけるハロゲンフリーイオン液体の潤滑機構

    川田将平 一瀬友佑 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議春2014  2014.5 

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    Venue:東京  

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  • 真空中におけるイオン液体の潤滑メカニズムに関する研究

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    日本機械学会関東支部第20期総会講演会  2014.3 

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    Venue:東京  

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  • 電場によるイオン液体の潤滑特性制御について

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議秋2013  2013.10 

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    Venue:福岡  

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  • 焼結製セラミックスに対するイオン液体の潤滑性に及ぼす分子構造の影響について International conference

    近藤ゆりこ 渡部誠也 川田将平 坪井涼 佐々木信也

    トライボロジー会議秋2013  2013.10 

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    Venue:福岡  

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  • Tribochemical Reaction of Ionic Liquids under Vacuum Condition International conference

    Shouhei Kawada, Seiya Watanabe, Yuriko Kondo, Ryo Tsuboi, Shinya Sasaki

    5th World Tribology Congress  2013.9 

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    Venue:トリノ  

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  • Tribological properties of halogen-free ionic liquids against sintered ceramics International conference

    Yuriko Kondo, Shouhei Kawada, Seiya Watanabe, Ryo Tsuboi, Shinya Sasaki

    40th Leeds-Lyon Symposium on Tribology  2013.9 

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    Venue:リヨン  

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  • Study on Ionic Liquids in the Electric Field International conference

    Shouhei Kawada, Yuriko Kondo, Takahiro Koyama, Ryo Tsuboi, Shinya Sasaki

    40th Leeds-Lyon Symposium on Tribology  2013.9 

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    Venue:リヨン  

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  • 真空中におけるイオン液体内の不純物によるトライボケミカル反応への影響

    川田将平 渡部誠也 近藤ゆりこ 坪井涼 佐々木信也

    トライボロジー会議春2013  2013.5 

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    Venue:東京  

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  • H-free DLCに対するハロゲンフリーイオン液体の潤滑メカニズムに関する研究

    近藤ゆりこ 川田将平 渡部誠也 小山貴大 坪井涼 佐々木信也

    トライボロジー会議春2013  2013.5 

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    Venue:東京  

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  • 真空中におけるイオン液体のトライボケミカル反応に関する研究

    川田将平 坪井涼 佐々木信也

    日本機械学会関東学生会第52回学生員卒業研究発表講演会  2013.3 

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    Venue:東京  

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Industrial property rights

  • 潤滑油用添加剤及び潤滑油組成物

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    Application no:特願2021-128640  Date applied:2021.8

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  • 潤滑油用添加剤及び潤滑油組成物

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    Application no:PCT/JP2020/044451  Date applied:2020.11

    Announcement no:WO2021-145076  Date announced:2021.7

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  • 潤滑油添加剤及び潤滑油組成物

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    Application no:PCT/JP2022/026004  Date applied:2022.6

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Awards

  • 2023年度日本トライボロジー学会論文賞

    2024.5   日本トライボロジー学会  

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    Country:Japan

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  • 2022年度(第13期)NSKメカトロニクス技術高度化「研究助成」

    2023.3   公益財団法人 NSKメカトロニクス技術高度化財団  

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    Country:Japan

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  • 日本機械学会奨励賞(研究)

    2022.4   日本機械学会  

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    Country:Japan

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  • 関西潤滑懇談会第6回ポスター発表会 優秀賞

    2021.7   関西潤滑懇談会  

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    Country:Japan

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  • 里見賞(若手研究者向け)

    2020.10   公益財団法人 里見奨学会  

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    Country:Japan

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  • 日本トライボロジー学会奨励賞

    2020.5   日本トライボロジー学会  

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    Country:Japan

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  • 日本機械学会賞(論文)

    2020.4   日本機械学会  

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    Country:Japan

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  • Yashima Environment Technology Foundation

    2020.3  

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    Country:Japan

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  • JVSS Rising-Researcher Lecture Award

    2019.5  

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    Country:Japan

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  • NSK Ltd. Mechatronics Foundation

    2019.3  

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    Country:Japan

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  • 優秀ポスター講演賞

    2018.3   電気通信大学ナノトライボロジー研究センター  

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    Country:Japan

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  • 最優秀ポスター賞

    2017.10   日本トライボロジー学会 サステイナブルトライボロジー会議2017奄美大島  

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    Country:Japan

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  • 優秀ポスター賞

    2016.11   日本トライボロジー学会 サスティナブルトライボロジー会議2016奄美大島  

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    Country:Japan

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  • 第6回トライボロジー秋の学校優秀ポスター賞

    2015.12   日本トライボロジー学会  

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    Country:Japan

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  • ITC Tokyo 2015 Poster Award for Young Tribologists

    2015.9  

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    Country:Japan

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Research Projects

  • イオン液体―水混合系における電気二重層構造のダイナミクス解析と潤滑特性の評価

    2023.3 - 2025.2

    公益財団法人NSKメカトロニクス技術高度化財団  研究助成  個人研究

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    Authorship:Principal investigator 

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  • ハードマターの摩擦界面に形成されるイオン液体電気二重層の構造・動態の解明

    2022.11 - 2023.10

    公益財団法人 住友財団  2022年度 基礎科学研究助成  個人研究

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  • 極限環境下における摩擦・摩耗を低減するイオン液体潤滑システムの開発

    Grant number:22100922-0  2022.10 - 2023.9

    NEDO 国立研究開発法人 新エネルギー・産業技術総合開発機構  官民による若手研究者発掘支援事業費助成金  個人研究

    川田将平

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  • クリーンな機械システム構築を指向した水潤滑システムの社会実装へ向けた研究

    Grant number:22E068  2022.8 - 2023.9

    公益財団法人 クリタ水・環境科学振興財団  2022年度 研究助成 萌芽研究 

    川田将平

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  • 表面電位付与による潤滑油の吸着構造制御を指向した新規すべり軸受の開発

    2021.4 - 2022.3

    (国研)科学技術振興機構  A-STEP トライアウト  トライアウトタイプ(標準)

    川田将平

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  • 超低摩擦を発揮する潤滑油添加剤としてのイオン液体の開発

    2020.11 - 2022.3

    (国研)科学技術振興機構  A-STEP トライアウト 

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  • イオン液体由来潤滑膜の形成過程に対する微量水分の影響の調査

    2020.4 - 2021.3

    公益財団法人 八洲環境技術振興財団  2019年度 研究開発・調査助成 

    川田将平

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  • イオン液体由来潤滑膜の形成・成長過程に対する水分の影響の解明と超低摩擦現象発現のための化学構造設計指針の確立

    2019.6 - 2021.3

    東京理科大学  若手研究者助成金 

    川田 将平

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1900000 ( Direct Cost: \1900000 )

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  • 漆をベース材料とした樹脂すべり軸受の実用化に向けた開発的研究

    Grant number:19K04156  2019.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    宮武 正明, 川田 将平

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    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    機械には,回転部や往復運動部など摺動部が多くあるが,樹脂すべり軸受は,摺動部を無給油・無給脂で支持するために広く用いられている.申請者は,硬度が高く耐薬品性に優れる樹脂材料として,天然の樹脂である漆に着目し,漆に固体潤滑剤を添加した樹脂すべり軸受を提案した(特願2016-093303 摺動組成物、並びに、摺動部材及びその製造方法).本研究課題においては,提案する漆を用いた樹脂すべり軸受の摺動特性や機械的特性を様々な条件下で評価し,漆を用いた樹脂すべり軸受の実用化に向けた研究を行う.本年度は,100℃の温度環境下での摺動試験を実施するための試験装置の作成と,漆にグラファイトを固体潤滑として混合した摺動材料に関して,高温環境下での試験を実施した.また,これまでにPTFEと,グラファイトを固体潤滑剤として,漆に混合して製作した摺動材料の評価を行ってきたが,本年度については,六方晶窒化ホウ素(h-BN)を漆に混合した摺動材料についても,ドライ環境下,水潤滑環境下にて,摺動試験を行い,評価を行った.評価試験の結果,100℃の温度環境下では,摩擦係数,摩耗量ともに,常温環境下よりも悪化し,現在,表面分析にて,その原因を究明している.また,h-BNを漆に混合した場合,PTFE,グラファイトとした場合よりも,摩擦係数が高くなり,摩耗量も多くなることが明らかとなった.これまでの研究の結果,漆に混合する固体潤滑剤としては,PTFEが最も適すると考えられる.

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  • イオン液体を用いた新規難削材料用切削油の開発

    2019.4 - 2022.3

    日本学術振興会  若手研究 

    川田 将平

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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  • 摩擦表面電位制御による超低摩擦イオン液体潤滑システムの構築

    2019.3 - 2021.2

    公益財団法人 NSKメカトロニクス技術高度化財団  平成30年度(第9期)研究助成対象者 

    川田 将平

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\2000000 ( Direct Cost: \1800000 、 Indirect Cost:\200000 )

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  • 摩擦面電位制御による超低摩擦イオン液体潤滑システムの構築

    2018.4 - 2019.3

    東京理科大学  学長重点配分・重点共通経費 研究戦略中期計画推進費 

    川田 将平

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1000000 ( Direct Cost: \1000000 )

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  • Biomimetic Surface Architecture for tribology

    Grant number:16H02310  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    SASAKI Shinya, Sakai Kenichi, Kawada Syouhei

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    Grant amount:\41470000 ( Direct Cost: \31900000 、 Indirect Cost:\9570000 )

    We carried out research aiming to further deepen the concept of multi-scale texturing and establish an innovative sliding surface system that is self-adaptive to surface damage and changes in the sliding environment. A sliding surface architecture imitating the skin structure of a living body is constructed, and its optimization was attempted by numerical simulations, and a three-dimensional microstructure was realized by applying a surface creation process technology by a 3D metal printer. We demonstrated the advantages and usefulness of the environment adaptive performance of the sliding surface and mechanical elements.

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  • 各種摩擦表面状態に対するハロゲンフリーイオン液体の潤滑メカニズムに関する研究

    2015.4 - 2017.3

    日本学術振興会  特別研究員DC1 

    川田 将平

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\2800000 ( Direct Cost: \2800000 )

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Teaching Experience

Social Activities

  • 日本機械学会 関西支部MECHAVOCATION 編集委員

    2023.10 - 2024.9

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  • The 5th Japan-Taiwan Tribology Symposium 2023 Organizer

    2023.8 - 2023.9

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  • 日本トライボロジー学会 トライボロジー会議春東京 シンポジウムWG長

    2023.6 - 2024.5

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  • ITC Fukuoka 2023 実行委員

    2022.7 - 2023.9

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  • 日本トライボロジー学会 秋の学校実行委員

    2022.6 - 2024.5

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  • 日本トライボロジー学会 教育講習委員会

    2022.6 - 2024.5

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  • 日本トライボロジー学会 トライボロジー会議春東京 実行委員

    2022.6 - 2023.5

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  • Tribology Letters Early Career Editorial Board

    2021.9 - 2024.8

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  • 日本トライボロジー学会 第65期 編集委員会 委員

    2020.6 - 2021.5

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  • 日本トライボロジー学会 第64期 編集委員会 幹事

    2019.6 - 2020.5

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  • 日本トライボロジー学会 第63期 編集・出版委員会 委員

    2018.6 - 2019.5

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  • サステイナブルトライボロジー会議2017奄美大島 実行委員

    2017.4 - 2017.10

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  • 日本機械学会 関東支部 学生委員

    2014.4 - 2015.3

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  • 日本機械学会 関東支部 学生委員

    2013.4 - 2014.3

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