발간논문

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Vol.37, No.4, 474 ~ 482, 1999
Title
Research Paper / Composite Materials : Wear properties of SiC Particulate Reinforced Aluminum Composites
김수영Su Young Kim, 조영기Yeong Gi Cho, 이희태Hee Tae Lee, 조경목Kyung Mox Cho
Abstract
In the present study, wear properties, of cast Al-SiC_p composites were characterized. Wear tests were performed as a function of teat conditions including applied load, sliding speed and sliding distance under dry wear condition employing a block-on-roller type wear test machine. Wear mechanism of Al-SiC_p composites was also investigated by the analysis of worn surfaces and wear debris. Results show that wear resistance of Al alloy is improved with reinforcement of SiC_p especially with severer wear conditions such as high applied load and long sliding distance. Weight loss of Al-SiC_p composites almost linearly increases with applied load and sliding distance. There exists a transition point of wear behavior at which a minimum wear rate encountered in terms of the sliding speed. Wear mechanism is abrasive at the low speed and at .the transition speed, and adhesive/abrasive wear at the high speed range. It was found that uniform distribution of SiC_p reinforcement is desirable to improve the wear resistance of Al-SiC_p composites.
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