激光熔敷Ni基合金层的高温干摩擦磨损性能研究  

Friction and Wear Behavior of Laser Remelted Ni-based Alloy Coatings at High Temperature

作　　者：郑世安[1] 王顺兴[1] 董企铭[1] 刘素芹[1] 田保红[1] 

机构地区：[1]洛阳工学院材料工程系

出　　处：《中国表面工程》1999年第1期25-29,共5页China Surface Engineering

摘　　要：利用ＣＯ_２连续激光器，对耐热铸铁表面进行了Ｎｉ基ＷＣ、Ｎｉ基ＷＣ中加入少量稀土元素ＣｅＯ_２等合金粉末的激光熔敷，研究了不同成分激光熔敷层的高温硬度、高温干磨擦磨损性能，对摩擦磨损后的表面形貌进行了分析研究。试验结果表明Ｎｉ２１＋２０％ＷＣ＋０．５％ＣｅＯ_２熔覆层的高温性能较好。In this paper,two Ni-base WC coatings with and without rare earth element (CeO_2) were remelted on the surface of a heat-resistant cast iron by high power CO_2 laser. Their hardness and friction and wear behaviors at high temperature were investigated. The surface morphologies after wear were analysed by SEM. The results showed that the coating of Ni21+20%WC +0.5%CeO_2 displays the optimum high temperature performance.

关 键 词：激光熔敷 高温 磨擦磨损性能 镍基合金层 

分 类 号：TG156.99[金属学及工艺—热处理]