Proceedings of the Korean Society For Composite Materials Conference (한국복합재료학회:학술대회논문집)

The Korean Society for Composite Materials (한국복합재료학회)
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Lubricated Wear Properties of Hybrid Metal Matrix Composites

하이브리드 금속복합재료의 윤활마모특성

  • Fu, Hui-hui (Department of Mechanical Engineering, Changwon National University) ;
  • Bae, Sung-in (Department of Mechanical Engineering, Changwon National University) ;
  • Ham, Kyung-chun (Department of Machine Design, Inha Technical Junior Colleg) ;
  • Song, Jung-il (Department of Mechanical Engineering, Changwon National University)
  • Published : 2002.10.01
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Abstract

The purpose of this study is to investigate the lubricated wear properties of Saffil/Al, Saffil/$Al_2O_3/Al$ and Saffil/SiC/Al hybrid metal matrix composites fabricated by squeeze casting method. Wear tests were done on a pin-on-disk friction & wear tester with long sliding distance. The wear properties of the three composites were evaluated in many respects. The effects of Saffil, $Al_2O_3$ particles and SiC particles on the wear behavior of the composites under lubricated conditions were elucidated. Wear mechanisms were analyzed by observing the worn surfaces of the composites. The variation of coefficient of friction (COF) during the wear process was recorded by using a computer. Comparing with the dry sliding condition, all three composites showed excellent wear resistance when lubricated by liquid paraffin. Under intermediate load, Saffil/Al showed best wear resistance among them, and its COF value is the smallest. The dominant wear mechanism of the composites was microploughing, but microcracking also occurred for them to different extent.

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