铜基粉末冶金/铬青铜摩擦副载流摩擦磨损的电弧侵蚀特性研究  

Research on Arc Erosion Characteristics of Cu-base Powder Metallurgy/QCr0.5 Couples under Electric Current

作　　者：冀盛亚[1] 孙乐民[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,河南洛阳471003

出　　处：《润滑与密封》2009年第2期5-7,共3页Lubrication Engineering

基　　金：国家自然科学基金项目(50432020);国家973项目(2007CB607603)

摘　　要：在销/盘式载流摩擦磨损试验机上,对铜基粉末冶金/铬青铜摩擦副载流摩擦磨损的电弧侵蚀特性进行了研究,探讨了电弧对铜基粉末冶金材料的载流摩擦学特性的影响。利用方差分析表,采用F检验法对电流、载荷、速度3种因素进行了显著性检验。结果显示电流对电弧能量的大小有影响,载荷、速度对电弧能量有显著影响;随着速度的增加,电弧的强度和发生频率均增大;低速下,主要是磨粒磨损和粘着磨损,高速下,主要是电弧侵蚀和粘着磨损。The arc erosion characteristics of Cu-base powder metallurgy/QCr0. 5 couples under electric current were investigated with an HST-100 high speed friction and wear tester. The tribological characteristics of Cu-base powder metallurgy under electric current were discussed. The effect of current, load and speed was analyzed using variance analysis table and F-test. The results show that the size of arc energy is impacted by current, especially by load and speed;with the increase of speed, both strength and frequency of are energy are increased ; under the low-speed, the main wear is abrasive wear and adhesive wear,while under the high-speed, the main wear is arc erosion and adhesive wear.

关 键 词：铜基粉末冶金 摩擦副 载流 摩擦磨损 电弧能量 磨损机制 

分 类 号：TH117.1[机械工程—机械设计及理论]