【作者】 荣伟； 涂江平； 郭绍义；

【Author】 RONG Wei, TU Jiang-ping, GUO Shao-yi (Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Department of Mechanical Engineering, Zhejiang Institute of Science and Technology, Hangzhou 310012, China )

【机构】 浙江大学材料科学与工程系； 浙江工程学院机械系；

【摘要】 在销-盘式摩擦磨损试验机上进行了Cu-纳米TiB2原位复合材料的电滑动摩擦磨损试验,考察了电流和TiB2 含量对Cu基复合材料电滑动磨损性能的影响,并对其磨损表面进行了观察分析．结果表明:Cu-纳米TiB2原位复合材料的磨损率随电流的增加而逐渐增大．在电流作用下,复合材料的磨损机制主要有磨粒磨损与电侵蚀磨损．在相同的摩擦磨损试验条件下,Cu-5．0wt．％TiB2的耐磨性能优于Cu-3．5wt．％TiB2．更多还原

【Abstract】 The sliding wear behavior of TiB2 nanoparticles reinforced copper matrix in-situ composites in the presence of electric current was examined on a pin-on-disk wear tester. The effects of electric current and the amount of TiB2 on the sliding wear characteristics were investigated, and the worn surfaces of copper matrix composites analyzed with a scanning electron microscope. The test results show that the wear rate of the in-situ composites increases with the electric current increasing. The dominant wear mechanisms of the copper matrix composites against Cu-C composite under electric current are abrasive wear and arc erosion. The Cu-5.0wt.%TiB2 composite has better wear resistance than Cu-3.5wt.%TiB2 composite under the same test condition.更多还原