Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Effect of the Microstructure of Gray Cast Iron Disk on Friction Characteristics

자동차용 브레이크 로터의 재료로 사용되는 회주철의 미세구조에 따른 마찰특성에 관한 연구

  • Cho, Min-Hyung (Division of Materials Science and Engineering, Korea University) ;
  • Jang, Ho (Division of Materials Science and Engineering, Korea University)
  • 조민형 (고려대학교 공과대학 재료금속공학부) ;
  • 장호 (고려대학교 공과대학 재료금속공학부)
  • Published : 1999.06.01
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Abstract

The effect of microstructure of gray cast iron disk was investigated by using a pad-on-disk type friction tester. Three different rotors with different microstructures were studied in this work. They showed a pearlitic matrix, a ferritic matrix, and a martensitic structure, respectively. All of them have graphite flakes in common. Drag tests at different pressure and speed conditions were carried out to study friction stability, temperature rise during drags. The rotor containing pearlitic matrix showed lower values of friction coefficient, small amount of temperature rise, and less fading. The results showed that gray cast iron disk containing pearlitic matrix has good friction characteristics.

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