Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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The Effect of Abrasive Particles on the Frictional Properties of Automotive Brake Friction Materials

자동차용 마찰재의 연마재가 마찰특성에 미치는 영향

  • Jang, Ho (Dept. of Materials Science and Engineering, Korea University) ;
  • Lee, Eun-Ju (Dept. of Materials Science and Engineering, Korea University) ;
  • Cho, Keun-Hyung (Dept. of Materials Science and Engineering, Korea University)
  • 장호 (고려대학교 신소재공학부) ;
  • 이은주 (고려대학교 신소재공학부) ;
  • 조근형 (고려대학교 신소재공학부)
  • Published : 2009.02.28
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Abstract

The frictional properties of automotive brake pads with four different ceramic materials such as magnesia, hematite, alumina, and zircon were investigated. A Krauss type friction tester using gray iron disks was used to examine the friction coefficient, intensity of friction force oscillation, and the tribe-surfaces. Results showed that the friction coefficient increased as the hardness of abrasives increases. Friction oscillation was also increased with hardness of the abrasives. However, the friction materials containing less abrasive particles produced stable friction films on the sliding surface. The transition between two-body and three body abrasion during sliding also played a crucial role in destructing the friction film on the pad surface and in determining various frictional properties.

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References

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