铬电极电火花熔涂层的干摩擦滑动磨损特性  

Dry Sliding Wear Characteristics of the Coating Electrosparkdeposited with Chromium Anode

作　　者：赵会友[1] 曲敬信[1] 陈华辉[1] 张祝伟[1] 刘志伟[1] 

机构地区：[1]中国矿业大学(北京校区),北京100083

出　　处：《材料热处理学报》2005年第4期98-101,共4页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助项目(50075085)

摘　　要：用环块磨损试验机对铬电极电火花放电熔涂层的干摩擦滑动磨损特性进行了研究。结果表明,轻载低速条件下,熔涂层的干摩擦滑动磨损机制以氧化磨损为主,与淬火低温回火态45钢相比,熔涂层的耐磨性是45钢的2～4倍;重载高速条件下,熔涂层的干摩擦滑动磨损机制比较复杂,存在磨料磨损,粘着磨损,剥层磨损等多种机制,熔涂层的耐磨性是45钢的15倍以上。The dry sliding wear characteristics of the coating electrospark-deposited on 45 steel with Cr anode was studied with a ring-on-block tester. The results show that at low sliding speed and small load, the main dry sliding wear mechanism of the coating is oxidation wear, and the wear resistance of the coating is 2-4 times higher than that of tempered 45 steel. However, at high sliding speed and large load, the abrasion, adhesion, delamination as well as fatigue wear occur, and the wear resistance of the coating is 15 times higher than that of 45 steel.

关 键 词：干摩擦滑动磨损 电火花熔涂 铬 涂层 

分 类 号：TG174.445[金属学及工艺—金属表面处理] TH117.1[金属学及工艺—金属学]