한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2000년도 제31회 춘계학술대회
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- Pages.173-179
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- 2000
자동차용 마찰재의 성능에 미치는 강화섬유의 역할
The Roles of Reinforcing Fibers on the Performance of Automotive Brake Pads
- Lim, Hyun-Woo (Division of Materials Science and Engineering, Korea University) ;
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Yoon, Ho-Gyu
(Division of Materials Science and Engineering, Korea University)
;
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Jang, Ho
(Division of Materials Science and Engineering, Korea University)
- 발행 : 2000.06.01
초록
The friction and wear characteristics of brake friction materials reinforced with aramid fiber, carbon fiber, glass fiber, and potassium titanate whiskers were investigated using a pad-on-disk type friction tester. In particular, the morphology of rubbing surfaces was carefully investigated to correlate the friction performance and properties of transfer films. The aramid fiber reinforced specimen showed severe oscillation of friction coefficient at low speed and low applied pressure. The carbon fiber reinforced specimen showing better friction stability exhibited uniform and stable transfer film than any other specimens. The glass fiber reinforced specimen showed unstable friction changes at high speed and high-applied pressure and the non-uniform transfer film was observed in both friction material and rotor surface. The potassium titanate whiskers reinforced specimen showed stable coherent transfer film. The wear test exhibited the potassium titanate whiskers reinforced specimen was lowest in wear amount and glass fiber reinforced specimen showed the severe wear.