WC-Co硬质合金热喷涂层中温处理后的摩擦磨损特性研究  

Friction and Wear Characteristic of Thermal-sprayed WC-Co Mid-temperature Sintered Coating

作　　者：李学兵[1] 邱长军[1] 王少力 陈从桂[1] 樊湘芳[1] 

机构地区：[1]南华大学机械工程学院,湖南衡阳421001 [2]桂林航空工业高等专科学校机械系,广西桂林541004

出　　处：《热加工工艺》2006年第6期6-7,共2页Hot Working Technology

基　　金：湖南省自然科学基金资助项目(98JJY2028和03JJY3132);湖南省教育厅青年项目资助项目(028037)

摘　　要：在室温干摩擦条件下,对WC-Co热喷涂中温处理涂层／GCr15摩擦副在摩擦系数和耐磨性方面与45 钢／GCr15作了滑动摩擦对比试验,观察分析了磨痕形貌,并对WC-Co热喷涂中温处理涂层的磨损机理进行了分析。结果表明:在干摩擦情况下,WC-Co热喷涂中温处理涂层的摩擦系数比45钢的高,耐磨性比45钢提高约100 倍。WC-Co热喷涂中温处理涂层的磨损机理为脆性微剥落和磨粒磨损。Under the normal temperature and dry friction condition, the friction coefficient and wear resistance of the frition pairs between WC-Co mid-temperature sintered coating/GCr15 and 45/GCr15 during rolling friction experiments were contrastly studied,and the worn trace＇s micrographs of WC-Co mid-temperature sintered coating were observed and analyzed,and the wear mechanics of WC-Co mid-temperature sintered coating were analyzed. The results show that the fiiction coefficient of WC-Co mid-temperature sintered coating is higher than 45,and the wear resistangce is improved about 100 times than 45steel in dry fi＇ition.The wear mechanics of WC-Co mid-temperature sintered coating is brittle spalling and abrasive wear.

关 键 词：WC-Co热喷涂中温处理涂层 摩擦系数 耐磨性 

分 类 号：TG174.445[金属学及工艺—金属表面处理]