石墨含量对铜/石墨材料高速载流摩擦性能的影响  

Influence of Graphite Contents on Tribo-electric Properties of Cu/Graphite Materials under High Speed

作　　者：徐晓峰[1] 杨晓倩[1] 杨正海[1,2] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]机械科学研究院武汉材料保护研究所,湖北武汉430030

出　　处：《河南科技大学学报（自然科学版）》2013年第5期1-4,18,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(U1034002);河南省科技厅省院科技合作基金项目(112106000034);河南科技大学大学生研究训练计划项目(2012026)

摘　　要：采用自制销盘式HST-100高速载流摩擦磨损试验机,对不同石墨含量的铜/石墨材料进行载流摩擦试验,考察其摩擦磨损性能和载流质量。用JSM-5610LV型扫描电子显微镜和能谱仪分析磨损表面,研究其摩擦磨损机理。研究结果表明:石墨质量分数为10%的铜/石墨复合材料的摩擦磨损性能好,不同速度下磨损率在1.2 mg.m-1左右,石墨质量分数为5%和10%的铜/石墨材料的载流效率为75%～85%,载流稳定性在20%左右,明显优于石墨质量分数为15%的铜/石墨材料;综合考虑,石墨质量分数为10%的铜/石墨复合材料的性能最好,该材料的摩擦磨损机制主要是塑性变形,含有电弧侵蚀。The influence of graphite constitutions on electro-tribological properties of Cu /graphite material was studied by using home-made HTS-100 electro-tribological tester with pin-on-disc. The JSM-5610LV scanning electron microscope and energy dispersive spectrometer were used to observe the worn surface and the wear mechanism was analyzed. The results indicate that for the material with 10% (mass fraction) graphite the wear rate is about 1. 2 mg . m - 1 . Current-carrying efficiency of materials with 5% and 10% (mass fraction) graphite is 75% ～ 85% ,and current-carrying stability is about 20% . The current-carrying properties of the material with 15% (mass fraction) graphite are worse obviously. Above all,the material with 10% (mass fraction) graphite has superior tribo-electric performance,and its major wearing mechanism is plastic deformation with arc erosion presenting.

关 键 词：载流摩擦 铜 石墨材料 载流质量 磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]