法向载荷对不锈钢/浸金属碳载流摩擦磨损性能的影响  

Effect of Normal Load on Friction and Wear Properties of Stainless-Steel/Copper-Metal Impregnation Carbon under Electric Current

作　　者：丁涛[1] 陈光雄(指导)[1] 朱旻昊[1] 

机构地区：[1]西南交通大学摩擦学研究所,牵引动力国家重点实验室,成都610031

出　　处：《机械工程材料》2010年第9期5-8,共4页Materials For Mechanical Engineering

基　　金：国家“973”计划资助项目(2007CB714703);国家科技支撑计划资助项目(2009BAG12A01-D06-1);国家自然科学基金资助项目(50821063)

摘　　要：在自行设计的销-盘式摩擦磨损试验机上进行了不同法向载荷下不锈钢/浸金属碳载流摩擦磨损试验,分析了法向载荷对其摩擦磨损性能的影响,并用SEM观察了其磨损形貌。结果表明:摩擦因数随着法向载荷的增大而减小,160 N后基本趋向稳定;10 A电流时,浸金属碳销试样的磨损率很低,且增加趋势不明显,30～50 A电流时,磨损率显著提高,且浸金属碳销试样磨损率随着法向载荷的增大而减小,最后趋于平缓;此外,放电强度随着法向载荷的增大而减弱;在低法向载荷下,磨损类型以电弧烧蚀和氧化磨损为主,在高法向载荷下,磨损类型以磨粒磨损和粘着磨损为主,且都伴随有材料的转移。The current-carrying friction and wear test for stainless steel/metal impregnation carbon was carried out under different normal loads on a self-designed pin-and-disc friction and wear tester.The effect of normal load on its friction and wear properties was analyzed,and the morphology of the worn surface was observed by SEM.The results indicate that the friction coefficient decreased with the increase of normal load,then kept stable until 160 N.When the current was 10 A,wear rate of the pin sample was very low and its increasing trend of change was not obvious.When the current was 30--50 A,the wear rate increased remarkably and then decreased with increasing of normal load,and kept stable at last.Furthermore,the discharge strength decreased with increasing of the normal load.Arc erosion and oxidative wear were dominant wear type with low normal load, abrasive wear and adhesive wear were dominant with high normal load.And both were accompanied with material transfer.

关 键 词：摩擦因数 磨损率 放电强度 法向载荷 

分 类 号：U264.3[机械工程—车辆工程] TH117.1[交通运输工程—载运工具运用工程]