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Control and decrease method of nano-scale friction for the anti-wear hard coatings by the super-minute texturing

Research Project

Project/Area Number 17560118
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionUniversity of Fukui

Principal Investigator

HONDA Tomomi  University of Fukui, Dept of Mechanical Engineering, Associate Professor, 工学研究科, 助教授 (80251982)

Co-Investigator(Kenkyū-buntansha) IWAI Yoshiro  University of Fukui, Dept of Mechanical Engineering, Professor, 工学研究科, 教授 (40115291)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2005: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsTribology / Scanning probe microscope / Texturing / Low friction / Hard coatings / Contact angle
Research Abstract

It is known that the optimum surface roughness is capable of reducing lateral force. The pull-off force and lateral force were measured by using a scanning probe microscope (SPM) with various curvature radius of a spherical tip in air under the relative humidity controlled.
(1)Adhesive force was measured by using AFM at various temperatures of specimens in air under the relative humidity controlled. We prepared the original sample stage of AFM that is able to control temperature of specimens by use of the peltier element. The test was performed with diamond-like carbon (DLC) film. Adhesive force increased with decreasing temperature of specimens. Laplace pressure of condensed water was predominant as the adhesive force. Before the dew point, adhesive force depends on the curvature radius of minute asperity on the glass sphere surface. When condensed water occurs more than curvature radius of minute asperity, adhesive force depends on the curvature radius of glass sphere.
(2)The frictiona … More l properties of DLC films with periodic structures were researched at the nano-scale using a scanning probe microscope. These periodic structures were generated on the surface of DLC films by means of a polarized femtosecond (fs) laser (τ= 40 fs, λ = 800 nm, F = 10 Hz) having an energy near the ablation threshold. The periodic structures have a mean spacing of approximately 100 nm with a length of 200-2,000nm. Friction tests were carried out under a normal load ranging from 20 nN to 130 nN, and the frictional direction was 0°, 45° and 90°(relative to the line along which the periodic structures were created). All of the tests were performed at a sliding speed of 2 μm/s, with a sliding area of 1 μm x 1μm. We used a silicon nitride rectangular cantilever with a special glass tip to carry out the tribological evaluation. The lateral force of the DLC film with the periodic structures was lower than that of the film without the periodic structures. We have concluded that decreases in adhesive forces produce significant decreases in lateral forces for the same normal loads.
(3)Si-DLC and Cr-DLC thin film were successfully produced as a protective and friction reduction coating on to Al2O3 using plasma immersion ion beam deposition (PIIBD) and dual magnetron sputter deposition (DMSD) with different deposition parameters. Metal Cr and Si layer were applied as bonding layers prior to or during the deposition on the specimens. To investigate their tribological properties, reciprocating wear tests were carried out on the DLC coated specimens. The properties of the coated DLC film were examined by atomic force microscopy (AFM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX) and nano-indenter. As a result, Cr-DLC shows the low friction coefficient, good wear resistance and high adhesive strength. Si-DLC applied non-RF plasma also has the lowest friction coefficient, good wear resistance and the highest hardness. Less

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (9 results)

All 2006 2005

All Journal Article (9 results)

  • [Journal Article] Friction Properties of the DLC Film with Periodic Structures in Nano-scale2006

    • Author(s)
      A.Mizuno, T.Honda, J.Kikuchi, Y.Iwai, N.Yasumaru, K.Miyazaki
    • Journal Title

      Tribology Online 1・2

      Pages: 44-88

    • NAID

      110004056363

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Friction properties of the DLC films with periodic structures in nano-scale2006

    • Author(s)
      A.Mizuno, T.Honda, J.Kiuchi, Y.Iwai, N.Yasumaru, K.Miyazaki
    • Journal Title

      Proceedings of The Third Asia International Conference on Tribology (ASIATRIB2006) 2

      Pages: 513-514

    • NAID

      110004056363

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Tribological propertise of metal included diamond like carbon thin film2006

    • Author(s)
      T.Sato, T.Honda, Y.Iwai, K.Y.Lee
    • Journal Title

      Proceedings of 2006 International Symposium on Advanced Mechanical Engineering and Power Engineering (ISAME2006)

      Pages: 193-199

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Friction Properties of the DLC Film with Periodic Structures in Nano-scale2006

    • Author(s)
      A.Mizuno, T.Honda, J.Kikuchi, Y.Iwai, N.Yasumaru, K.Miyazaki
    • Journal Title

      Tribology Online 1-2

      Pages: 44-48

    • NAID

      110004056363

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Friction properties of the DLC films with periodic structures in nano-scale2006

    • Author(s)
      A.Mizuno, T.Honda, J.Kiuchi, Y.Iwai, N.Yasumaru, K.Miyazaki
    • Journal Title

      Proceedings of The Third Asia International Conference on Tribology (ASIATRIB2006)

      Pages: 513-514

    • NAID

      110004056363

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Friction properties of the DLC films with periodic structures in nano-scale2006

    • Author(s)
      A.Mizuno, T.Honda, J.Kikuchi, Y.Iwai, N.Yasumaru, K.Miyazaki
    • Journal Title

      Proceedings of The Third Asia International Conference on Tribology (ASIATRIB2006) 2

      Pages: 513-514

    • NAID

      110004056363

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Tribological propertise of metal included diamond like carbon thin film2006

    • Author(s)
      T.Sato, T.Honda, Y.Iwai, K.Y.Lee
    • Journal Title

      Proceedings of 2006 International Symposium on Advanced Mechanical Engineering and Power Engineering (ISAME2O06)

      Pages: 193-199

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Friction Properties of the DLC Films with Periodic Structures in Nano-Scale2005

    • Author(s)
      A.Mizuno, T.Honda, N.Yasumaru, Y.Iwai
    • Journal Title

      Proceedings of 2005 International Symposium on Advanced Mechanical Engineering and Power Engineering (ISAME2005)

      Pages: 184-187

    • NAID

      110004056363

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] 周期構造を付与した硬質薄膜のマイクロトライボロジー特性2005

    • Author(s)
      水野顕, 本田知己, 岩井善郎, 安丸尚樹
    • Journal Title

      日本トライボロジー学会トライボロジー会議予稿集 東京2005-11

      Pages: 361-362

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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