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Mechanical Properties of SiCp/AC8A Composites Fabricated by Pressureless Metal Infiltration Process  

김재동 (경상대하교 해양산업연구소)
고성위 (부경대학교 기계공학부)
김형진 (경상대학교 수송기계공학부)
Publication Information
Composites Research / v.15, no.3, 2002 , pp. 1-10 More about this Journal
Abstract
The effect of size of SiC particles and additive Mg content on the mechanical properties and wear characteristics were investigated for the SiCp/AC8A composites fabricated by pressureless infiltration process. Results showed that the hardness and the bending strength increased with decreasing the size of SiC particle. By increasing the Mg content the hardness of SiCp/AC8A composites increased due to the hard reaction products, however the bending strength decreased by formation of coarse precipitates and high porosity level. The SiCp/AC8A composites exhibited about 6 times higher wear resistance compared with AC8A alloy at high sliding velocity and as increasing the particle size, wear resistance was improved. The major wear mechanical of SiCp/AC8A composites exhibited the abrasive wear at low to high sliding velocity whereas AC8A alloy showed adhesive and melt wear at high sliding velocity.
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Times Cited By KSCI : 1  (Citation Analysis)
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