石墨/铜复合材料的载流摩擦磨损性能  

Friction and Wear Properties with Electrical Current of Graphite/Copper Composites

作　　者：李雪飞[1] 上官宝[1] 张永振[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003

出　　处：《机械工程材料》2013年第4期54-57,共4页Materials For Mechanical Engineering

基　　金：国家自然科学联合基金资助项目(U1034002);国家"973"计划前期研究专项(2010CB635113);国家自然科学基金资助项目(50975078)

摘　　要：分别采用粒径为150μm的镀铜石墨粉和不镀铜石墨粉,通过冷压烧结法制备了不同成分的石墨/铜复合材料,用销-盘式载流摩擦磨损试验机研究了石墨/铜复合材料的载流摩擦磨损性能,利用扫描电镜对磨损表面进行了分析。结果表明:在试验参数范围内,采用镀铜石墨粉能够有效降低复合材料的摩擦因数,但对耐磨性能影响趋势不明显;随石墨含量的增加,复合材料摩擦因数减小;石墨质量分数为10%时,复合材料的磨损率最低。Graphite/copper composites were prepared by cold-press sintering method using 150μm graphite powders with and without copper plating respectively. The friction and wear properties with electrical current of the composites were studied using a pin-disc testing machine, and the worn surface was analyzed by SEM. The results show that within the studied range, the friction coefficient of the composites decreased effectively by using copperplating graphite, but the effect of copper-plating on wear resistance was not obvious The friction coefficient of the composites decreased with the increase of graphite content. The wear rate of the composite was the lowest when graphite content was 10wt%

关 键 词：石墨 铜复合材料 镀铜石墨 载流摩擦磨损 冷压烧结法 

分 类 号：TB332[一般工业技术—材料科学与工程]