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Dynamic Behavior of Boundary Lubrication Analyzed by Quantum Beam with Mechano-Operando Mechanism

Research Project

Project/Area Number 18H01362
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionDoshisha University

Principal Investigator

Takashi Matsuoka  同志社大学, 理工学部, 教授 (80173813)

Co-Investigator(Kenkyū-buntansha) 平山 朋子  京都大学, 工学研究科, 教授 (00340505)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywordsトライボロジー / 境界潤滑 / 量子ビーム分析 / メカノオペランド機構 / 境界潤滑層 / オペランド分析 / 潤滑 / メカノオペランド分析 / 表面界面分析 / メカノオペランド / 固液界面
Outline of Final Research Achievements

In this study, we aimed to analyze the dynamic behavior of the boundary lubrication layer under sliding conditions by sublimating the conventional in-situ analysis to operando analysis in response to the strong need for clarifying the dynamic behavior of the boundary lubrication layer. Specifically, the dynamic behavior of the boundary lubrication layer under sliding conditions was investigated by combining various quantum beam analyses with a sample holder having sliding mechanism. As a result, it was confirmed that the interfacial structure and chemical state of the boundary lubrication layer could be obtained by neutron reflectometry and synchrotron-XAFS. In addition, we succeeded in obtaining the boundary lubrication layer behavior under the sliding condition by installing the sliding mechanism in those beamlines.

Academic Significance and Societal Importance of the Research Achievements

境界潤滑層を対象とした量子ビーム固液界面分析は国内外を含めてこれまで他に研究事例が極めて少なかったが、当研究グループによる成果を受け、量子ビーム分析の有効性を広めることができた。また、コロイドプローブAFMを用いて、固液界面の境界潤滑層の物理構造および化学状態と摩擦係数の関係性を調査したところ、界面における吸着膜が厚く、密であるほど、摩擦係数が下がることを確認した。添加剤に依る境界潤滑摩擦係数の予測と最適化はトライボロジー分野において積年の課題の一つであるが、量子ビーム分析を活用することによって、その予測が可能となることが示唆された。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (3 results)

  • [Journal Article] Combined Use of Neutron Reflectometry and Frequency-Modulation Atomic Force Microscopy for Deeper Understanding of Tribology2020

    • Author(s)
      Tomoko Hirayama, Naoki Yamashita
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of Adsorbed Additive Layer for Further Friction Reduction2019

    • Author(s)
      Tomoko Hirayama, Masayuki Maeda, Yuto Sasaki, Takashi Matsuoka, Hiroshi Komiya, Masahiro Hino
    • Journal Title

      Lubrication Science

      Volume: 31(5) Issue: 2 Pages: 171-178

    • DOI

      10.1002/ls.1485

    • NAID

      120006726154

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] トライボロジー現象解明に向けた量子ビーム分析の応用【解説】2019

    • Author(s)
      平山朋子, 山下直輝
    • Journal Title

      トライボロジスト

      Volume: 64,11 Pages: 641-647

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of Adsorbed Additive Layer for Further Friction Reduction2018

    • Author(s)
      Masayuki Maeda, Yuto Sasaki, Takashi Matsuoka, Hiroshi Komiya, Masahiro Hino
    • Journal Title

      Lubrication Science

      Volume: 1 Issue: 5 Pages: 1-8

    • DOI

      10.1002/ls.1420

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] What is the Best Design of Oil Additives for Friction Reduction? (Plenary Lecture)2019

    • Author(s)
      Tomoko Hirayama
    • Organizer
      International Tribology Conference Sendai 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 同志社大学 機械設計工学研究室

    • URL

      https://www1.doshisha.ac.jp/~dmdl/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 京都大学 機械機能要素工学研究室

    • URL

      http://www.elem.me.kyoto-u.ac.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 同志社大学理工学部機械系学科 機械設計工学研究室

    • URL

      https://www1.doshisha.ac.jp/~dmdl/index.html

    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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