SiC_p/ZL101A复合材料的磨损性能

Wear Behavior of SiCp/ZL101A Composites

采用真空热压烧结工艺制备了SiC颗粒体积分数分别为10%、20%、30%和40%的ZL101A复合材料,对其硬度与室温干摩擦磨损性能进行了测试分析,同时对其磨损机理进行了探讨。结果发现,复合材料硬度随着SiCp的增加而增加,当SiCp体积分数达到30%时,硬度达到最大值。基体ZL101A的主要磨损机理为粘着磨损,而SiCp/ZL101A复合材料的磨损过程是粘着磨损和磨粒磨损两种机制共同作用的结果。随着SiC颗粒体积分数的增加,粘着磨损所占的比例逐渐降低,从而使SiCp/ZL101A复合材料的磨损性能得以提高。

SiCp/ZL101A composites were prepared by hot-presses sintering process（HPS） with SiC particles of 10%,20%,30% and 40% in volume fraction.The hardness and dry frictional wear behavior at room temperature were measured,and the wear mechanism was approached.The results show that,with increasing in volume fraction of SiC particles,hardness of the composites is increased,and the maximum hardness value can be observed in the composites with 30% SiC content.The wear mechanism of the matrix ZL101A alloy is characterized by adhesion wear,while wear mechanism of the composites is characterized by adhesion wear with a little abrasive wear.With increasing in volume fraction of SiC particle,the adhesion wear is gradually reduced,which is responsible for the improvement of wear behavior of the composites.