电流密度对碳纤维/铜/石墨复合材料摩擦系数的影响  

Influence of Current Density on the Friction Coefficientof Carbon Fiber/Copper/Graphite Composite

作　　者：凤仪[1] 王文芳[1] 王成福[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《机械工程材料》2000年第5期40-41,共2页Materials For Mechanical Engineering

基　　金：国家自然科学基金! (59771 0 1 2 );安徽省自然科学基金!(960 30 8)

摘　　要：研究了碳纤维 /铜 /石墨复合材料在纯机械磨损和通以不同电流密度 ( 4～ 1 6A/cm2 )的电磨损条件下复合材料摩擦系数的变化情况。结果表明 ,在复合材料表面形成的自润滑膜使复合材料摩擦系数下降 ;在纯机械磨损条件下的摩擦系数大于在电磨损条件下的摩擦系数 ;Under no current or the different current density(from 4A/cm2 to1 6A/cm2 ) conditions,the friction coefficient of CF- Cu- G composite were studied.The results show that the friction coefficient of composite decreases due to the lubrication film between brush and commutator.The friction coefficient under no current is larger than that under electrical wear.The influence of current density on the friction coefficient of composite is very little.

关 键 词：复合材料 碳纤维/铜/石墨 电流密度 摩擦系数 

分 类 号：TM201.4[一般工业技术—材料科学与工程] TB333[电气工程—电工理论与新技术]