摘要
以亚微米级(130nm)SiCp和(100～200)目(149～75μm)Al粉为原料,采用冷压烧结和热挤压方法制备出不同体积含量的微米SiCp增强Al基复合材料,研究了其分形特性和耐磨性能。结果表明:SiCp/Al基复合材料具有分形特性,SiCp/Al基复合材料耐磨性优于市售挤压态锡青铜QSn6.5-0.4和纯Al,且随SiCp含量增加,复合材料的分形维数增大,耐磨性能提高;磨损表面形成Al基体+孔隙+弥散分布SiCp的理想耐磨组织。
Wear Characteristics and the sliding wear-resistance and （ 1.5-5.0）vol%SiCp/Al （ 149- 75μm ）matrix composites fabricated by powder metallurgy followed by hot extrusion,were investigated. The results showed that SiCp Reinforced Al Matrix Composite is fractal, 1.5vo1% and 5.0vol%SiCp/Al composite have excellent sliding wear resistance ,which has higher sliding wear-behavior than that of popularly used 6.5-0.4 bronze bearing materials and with the increase in SiCp（130nm） volume fraction, the fractal dimensionon the composite and the sliding wear-property increased. A n excellent wear-resistance microstructure consisting of aluminum matrix and minute hole and homogeneous distribution SiCp was formed in the wear surface of SiCp/Al matrix composites.
出处
《机械设计与制造》
北大核心
2009年第5期130-132,共3页
Machinery Design & Manufacture
