Effect of Humidity on Friction Characteristics of Automotive Friction Material

습도에 따른 자동차용 마찰재의 마찰특성에 관한 연구

  • Kim, Seong-Jin (Division of Materials Science and Engineering, Korea University) ;
  • Choi, Nak-Cheon (Division of Materials Science and Engineering, Korea University) ;
  • Jang, Ho (Division of Materials Science and Engineering, Korea University)
  • 김성진 (고려대학교 공과대학 재료금속공학부) ;
  • 최낙천 (고려대학교 공과대학 재료금속공학부) ;
  • 장호 (고려대학교 공과대학 재료금속공학부)
  • Published : 1998.10.01

Abstract

The effect of humidity on friction characteristics of friction materials were studied using a pad-on-disk type friction tester. Three different friction materials containing simplified ingredients were investigated by changing the solid lubricant, graphite, MoS$_2$, and $Sb_2S_3$. A friction material without solid lubricant was also examined to study the effect of ingredients in the matrix on humidity. Friction material containing graphite showed lower friction coefficient at high humidity level than other conditions, however, friction material containing MoS$_2$ indicated higher friction coefficient at initial stage under high humidity level. Friction materials without solid lubricant and with $Sb_2S_3$ were little affected by humidity conditions.

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