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A Study on the Formation and the Tribological Role of Mass Transfers Layers at Rubbing Silver-coated Surface

은 박막이 코팅된 표면에서 물질전이층의 형성 및 그 트라이볼로지적 역할에 관한 연구

  • 공호성 (한국과학기술원 트라이볼로지 연구센터) ;
  • 양승호 (한국과학기술원 트라이볼로지 연구센터) ;
  • 윤의성 (한국과학기술원 트라이볼로지 연구센터) ;
  • 김대은 (연세대학교 기계공학과)
  • Published : 2002.12.01

Abstract

The tribological role of mass transfer layer was studied with silver coatings under various ranges of load and sliding speed. Silver coating was performed with a functionally gradient coating method. Tests were per-formed in dry sliding conditions, using a ball-on-disk contact configuration, at the load of 0.0196-17.64 N and the sliding speed of 20-1,000 mm/s in ambient air. Optical microscope and EPMA analyses showed that contact surfaces were covered with the mass transfer layers of agglomerated wear particles depending upon the contact conditions, and they greatly influenced the tribological characteristics of the surfaces. However, the formation of mass transfer layer was suppressed as the sliding speed increased, and above a critical sliding speed, no mass transfer layer was able to form. For building up a general framework of triboiogical behavior of the coated silver films, all test data were summarized on a map whose axes are contact pressure and sliding speed.

Keywords

References

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