한국분말재료학회지 (Journal of Powder Materials)

  • 제25권1호
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  • Pages.30-35
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  • 2018
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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구리를 함유하지 않은 친환경 자동차 브레이크 패드의 마모 특성에 관한 연구

A Study on the Wear Properties of Cu-free Ecofriendly Vehicle Brake Pad

  • 김기봉 (한국기계연구원 부설 재료연구소 분말기술연구실) ;
  • 양상선 (한국기계연구원 부설 재료연구소 분말기술연구실) ;
  • 이성주 (KB오토시스 기술연구소) ;
  • 황석훈 (KB오토시스 기술연구소) ;
  • 김신욱 (KB오토시스 기술연구소) ;
  • 김용진 (한국기계연구원 부설 재료연구소 분말기술연구실)
  • Kim, Ki-Bong (Powder Technology Department, Korea Institute of Materials Science (KIMS)) ;
  • Yang, Sangsun (Powder Technology Department, Korea Institute of Materials Science (KIMS)) ;
  • Lee, Seong-Ju (Research Center, KB Autosys Co., Ltd.) ;
  • Hwang, Suk-Hun (Research Center, KB Autosys Co., Ltd.) ;
  • Kim, Sin-Wook (Research Center, KB Autosys Co., Ltd.) ;
  • Kim, Yong-Jin (Powder Technology Department, Korea Institute of Materials Science (KIMS))
  • 투고 : 2018.01.31
  • 심사 : 2018.02.23
  • 발행 : 2018.02.28
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초록

The friction characteristics of Al-Fe alloy powders are investigated in order to develop an eco-friendly friction material to replace Cu fiber, a constituent of brake-pad friction materials. Irregularly shaped Al-Fe alloy powders, prepared by gas atomization, are more uniformly dispersed than conventional Cu fiber on the brake pad matrix. The wear rate of the friction material using Al-8Fe alloy powder is lower than that of the Cu fiber material. The change in friction coefficient according to the friction lap times is 7.2% for the Cu fiber, but within 3.8% for the Al-Fe alloy material, which also shows excellent judder characteristics. The Al-Fe alloy powders are uniformly distributed in the brake pad matrix and oxide films of Al and Fe are homogeneously formed at the friction interface between the disc and pad, thus exhibiting excellent friction and lubrication characteristics. The brake pad containing Al-Fe powders avoids contamination by Cu dust, which is generated during braking, by replacing the Cu fiber while maintaining the friction and lubrication performance.

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