QPQ表面改性层和镀铬层干摩擦状态下磨损特性的研究  

Study on Dry Sliding Wear Properties of QPQ Surface and Chromium Coating

作　　者：张书[1] 刘锦云[1] 李孔军[1] 周卫宁 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039 [2]成都赛飞斯金属科技有限公司,四川成都610091

出　　处：《润滑与密封》2011年第11期67-70,104,共5页Lubrication Engineering

摘　　要：在M-2000型摩擦磨损试验机上,对QPQ表面改性层和镀铬层干摩擦状态下的滑动摩擦特性进行对比试验研究,在扫描电子显微镜下观察磨痕的微观形貌,分析2种处理层的磨损机制。结果表明,在磨合阶段,QPQ表面改性层的磨损量较镀铬层的大,而在稳定磨损阶段,QPQ表面改性层的磨损率和摩擦因数均小于镀铬层;在磨合阶段,QPQ表面改性层的磨损机制主要为轻微的磨粒磨损和黏着磨损,镀铬层主要为严重的磨粒磨损,而在稳定磨损阶段,QPQ表面改性层的磨损机制主要为氧化磨损,镀铬层主要为黏着磨损。The dry sliding wear properties of Quench-Polish-Quench （QPQ）composite salt bath treated layer and chromium coating were compared on the M-2000 tribological tester, the morphology of wear scar was observed by scanning electrical microscope （SEM）, and the wear mechanism was analyzed. The results show that the abrasion loss of the QPQ surface is larger than that of the chromium coating in running in stage, but the wear rate and friction coefficient of the QPQ surface are lower than that of the chromium coating in steady wear stage. The wear mechanism of the QPQ surface performs as oxidative wear in running in stage and slight abrasive wear and adhesive wear in steady wear stage,while chromium coating is adhesive wear in running in stage and severe abrasive wear in steady wear stage.

关 键 词：QPQ处理表面改性层 镀铬层 干摩擦 磨损曲线 磨损特性 

分 类 号：TG178[金属学及工艺—金属表面处理]