激光熔敷Ni+WC+RE合金层的高温性能研究  

Performance of Laser Cladding Alloy Layer at High Temperature

作　　者：刘素芹[1] 刘忠选[2] 陈卫[3] 刘勇[1] 董企铭[1] 黄金亮[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]洛阳耐火材料研究院,河南洛阳471003 [3]洛阳船舶材料研究所,河南洛阳471003

出　　处：《热加工工艺》2003年第4期6-8,共3页Hot Working Technology

基　　金：国家机械工业发展基金项目(95JA0503)

摘　　要：通过不同成分、不同温度下的高温硬度、高温干摩擦磨损试验,对激光熔敷合金层的一些高温性能进行了研究。结果表明,在相同实验条件下,不同成分熔敷层的高温硬度和高温耐磨性均随温度升高而下降,其中Ni21+20%WC+0.5%CeO2熔敷层的高温性能最好。激光熔敷层的高温磨损机制以粘着磨损为主,兼有磨粒磨损和氧化磨损。The hardness and abrasivewear behavior of the laser cladding alloy layer at high temperature was investigated by changing composition and temperature . The results showed that the hardness and abrasivewear behavior decreased with increasing of temperature. Ni21+20%WC+0.5%CeO2 cladding layer presents the best performance at high temperature. The main abrasivewear mechanism of the laser cladding alloy layer at high temperature was adhesive abrasion along with grain abrasion and oxide abrasion.

关 键 词：激光熔敷层 高温硬度 高温干摩擦磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]