Effect of electrical current on tribological property of Cu matrix composite reinforced by carbon nanotubes  

电流对碳纳米管增强铜基复合材料载流摩擦学性能的影响(英文)

作　　者：许玮[1,2] 胡锐[1] 李金山[1] 傅恒志[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072 [2]山西大同大学工学院,大同037003

出　　处：《Transactions of Nonferrous Metals Society of China》2011年第10期2237-2241,共5页中国有色金属学报（英文版）

基　　金：Project(2007CB607603)supported by the National Basic Research Program of China

摘　　要：Cu matrix composite reinforced with 10%（volume fraction） carbon nanotubes（CNTs/Cu） and pure Cu bulk were prepared by powder metallurgy techniques under the same consolidation processing condition.The effect of electrical current on tribological property of the materials was investigated by using a pin-on-disk friction and wear tester.The results show that the friction coefficient and wear rate of CNTs/Cu composite as well as those of pure Cu bulk increase with increasing the electrical current without exception,and the effect of electrical current is more obvious on tribological property of pure Cu bulk than on that of CNTs/Cu composite;the dominant wear mechanisms are arc erosion wear and plastic flow deformation,respectively;CNTs can improve tribological property of Cu matrix composites with electrical current.采用粉末冶金方法在相同的工艺条件下制备纯铜和碳纳米管含量为10%(体积分数)的铜基复合材料。在一种销盘式载流摩擦磨损试验机上考察了不同电流条件下2种材料的载流摩擦磨损性能。结果表明:纯铜和铜基复合材料的摩擦系数和磨损率均随电流的增大而增大,但是电流对纯铜材料的影响更加显著;纯铜材料的主导磨损机制是电弧烧蚀磨损,而铜基复合材料的主导磨损机制是塑性流动变形;碳纳米管可以改善铜基复合材料的载流摩擦磨损性能。

关 键 词：CNTs/Cu composite pure Cu bulk electrical current tribological property 

分 类 号：TB331[一般工业技术—材料科学与工程]