中文摘要：

大量的部分(61%) 的 wear 行为上的孔的影响 SiCp/Cu 合成由无压力的渗入生产了用滑动被学习，互给并且颤动(SRV ) 机器。SiCp/Cu composites 对在 40200 N 的负担范围忍受钢球的变硬的 GCr15 滑动了。结果证明 wear 与增加孔评估增加。合成的包含的低孔表演优秀穿抵抗，它在穿的表面上被归因于机械地混合的层的存在。在这种情况中，主导穿机制是氧化的穿。比较地，合成的包含的高孔展出晚辈穿抵抗。粒子的骨折和 spalling 被看作主要原因严重穿。第三身体磨损是控制穿机制。另外，孔穿上更重要的影响比在低负担在高负担穿率。这与粒子的破裂和 spalling 是裂缝开始和繁殖的一个过程的事实被联系。在更低的负担，当毛孔变得不稳定并且容易在高负担下面宣传时，在穿的表面下面的毛孔不能显著地宣传，它导致一更高穿率。

英文摘要：

The influence of porosity on the wear behavior of high volume fraction （61%） SiCp/Cu composite produced by pressureless infiltration was studied using a sliding, reciprocating and vibrating（SRV） machine. SiCp/Cu composites slid against hardened GCr15 bearing steel ball in the load range of 40-200 N. The results show that the wear rate increases with increasing porosity. The composite containing low porosity shows excellent wear resistance, which is attributed to the presence of mechanically mixed layer on the worn surface. In this case, the dominant wear mechanism is oxidative wear. Comparatively, the composite containing high porosity exhibits inferior wear resistance. Fracture and spalling of the particles are considered as the main causes of severe wear. Third body abrasion is the controlling wear mechanism. In addition, porosity has more important influence on wear rate at high load than at low load. This is associated with the fact that the fracture and spalling of particles is a process of crack initiation and propagation. At lower load, the pores beneath the worn surface can not propagate significantly, while the pores become unstable and easily propagate under high load, which results in a higher wear rate.