소성∙가공 (Transactions of Materials Processing)

  • 제18권6호
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  • Pages.465-470
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  • 2009
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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디젤엔진 피스톤 링 코팅 층의 경도에 따른 마찰특성

Effect of Coating Layer Hardness on Frictional Characteristics of Diesel Engine Piston Ring

  • 장정환 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 주병돈 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 이호진 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 김은화 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 문영훈 (부산대학교)
  • 발행 : 2009.10.01
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초록

The frictional behaviors of Cermets/Cr-Ceramics and Cu-Al coatings of piston ring were investigated. Friction tests were carried out by pin-on-disk test and materials properties of coating layer were analyzed by nano indentation tester. The effect of surface roughness of cylinder liner on the friction coefficient was analyzed. This study provided tribological data of hard and soft piston ring coatings against cylinder liner. The surface roughness does exert an influence on the average friction coefficient, with smoother surfaces generally yielding lower friction coefficients. In case of hard-coating, the scratch depth, width and pile-up height had close relationship with hardness. So the scratch width, depth and pile-up height increases with decreasing friction coefficient. But in case of soft-coating, the friction coefficients are strongly dependent on the morphological characteristics such as, scratch depth, width, pile-up height and elastic modulus.

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참고문헌

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