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Vol.45, No.9, 534 ~ 544, 2007
Title
Dry Sliding Wear Properties of A356/SiCp Composites against Semi-metallic Pad
이정무 Jung Moo Lee , 강석봉 Suk Bong Kang , Yun Xue Jin
Abstract
The dry sliding wear tests were performed on A356/20vol.% SiCp composites against semi-metallic pad materials. The samples were tested by pin-on-disc wear test equipment with different applied load and sliding velocity. The wear properties of A356/20vol.% SiCp against semi-metallic pad have exhibited good results with low wear rate even at the 700N applied load and 4.0 m/s sliding velocity and low friction coefficient in the range of 0.2-0.3. Wear behavior was examined through the observations and analysis of the worn surface, worn subsurface and wear debris. It is revealed that the oxide powders and carbon transferred from the counterpart formed on the worn surface and acted as lubricant to reduce the wear rate. In addition, platelike wear debris has been formed on the worn surface. The platelike wear debris is formed due to the plastic flow and increase of temperature on top of the worn surface.
Key Words
aluminum, silicon carbide. composites. dry sliding wear, semi-metallic pad
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