Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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The Effects of Cobalt on Wear and Friction Characteristics of High Speed Steel by Powder Metallurgy

분말고속도공구강의 마찰마모특성에 미치는 Co의 영향

  • 이한영 (계명대학교 재료공학과) ;
  • 배종수 (한국기계연구원 재료공정연구부) ;
  • 김용진 (한국기계연구원 재료공정연구부)
  • Published : 1999.06.01
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Abstract

The mechanical characteristics of the high speed steel by Powder metallurgy Process (PM-HSS) has been reported to improve with several alloying constituents, such as high carbon, vanadium and cobalt. In this paper, sliding wear test has been conducted using a pin-on-disc machine for three PM-HSS which contains 0%, 5% and 12% cobalt respectively, in order to evaluate the effect of cobalt on wear properties of PM-HSS. The results of this study showed that the wear resistance of PM-HSS has been increased by the addition of cobalt on the range of experimental friction velocities. When compared with the effect of addition of cobalt, the wear resistance of PM-HSS with 5% cobalt has been found to be superior to that of PM-HSS with 12% cobalt.

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References

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