增强颗粒对铝基复合材料摩擦学性能的影响  

The Tribological Behavior of Aluminum-matrix Composites Reinforced with Ceramic Particulates in Dry Sliding against a Semi metallic Frictional Material

作　　者：陈跃[1] 邢建东[1] 张永振[1] 沈百令[2] 倪锋[2] 

机构地区：[1]西安交通大学机械工程学院,陕西西安710049 [2]洛阳工学院材料工程系,河南洛阳471039

出　　处：《摩擦学学报》2001年第4期251-255,共5页Tribology

基　　金：河南省杰出青年基金资助 ( 1998) ;中国科学院兰州化学物理研究所固体润滑国家重点实验基金资助 ( 1999) .

摘　　要：采用自制的摩擦磨损试验机考察了增强颗粒对铝基复合材料摩擦磨损性能的影响 .结果表明 :在基体合金、陶瓷颗粒尺寸和体积分数相同的条件下 ,Si C增强铝基复合材料的摩擦磨损性能优于 Al2 O3增强铝基复合材料 ;增大颗粒尺寸或增加颗粒体积分数均使得 Si C颗粒增强铝基复合材料的平均摩擦系数略有降低 ,耐磨性能提高 ;在与半金属摩擦材料配副时 ,颗粒增强铝基复合材料的摩擦系数与基体合金的相近 ,耐磨性能提高了The tribological behavior of Al alloy matrix composites reinforced with ceramic particulates (SiC p and Al 2O 3) in dry sliding against a semi metallic frictional material was investigated with a disk on block friction and wear tester. The worn surface morphologies of the composites and the counterpart semi metallic frictional material were observed with a scanning electron microscope. It has been found that the composites reinforced with SiC p are superior to the composites reinforced with Al 2O 3 in terms of the tribological behavior. The The composites reinforced with SiC p particulates of larger size and/or volume fraction show greatly increased wear resistance and slightly decreased friction coefficient. The particulate reinforced Al alloy matrix composites have wear rates as lowas 0.1% of the matrix alloy, which corresponds to largely decreased of the wear rate of the counterpart frictional material as well.

关 键 词：铝基复合材料 颗粒增强 摩擦学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]