激光熔覆WC增强复合涂层开裂行为分析  

Cracking Analysis of WC Reinforced Composites Coating by Laser Cladding

作　　者：刘富荣[1] 高谦[1] 高登攀[1] 王广生[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《材料工程》2003年第5期37-39,共3页Journal of Materials Engineering

摘　　要：研究了激光熔覆WC增强复合涂层的开裂行为。研究结果表明:激光熔覆金属陶瓷涂层开裂是由于熔覆层与金属基体两种材料的热膨胀系数不同所致,同时开裂倾向还受激光工艺参数、涂层合金粉的配比以及强化相的形状、大小等因素的影响。The cracking behavior of WC reinforced composite coating by laser cladding was investigated The results show that the effect of cracking is due to the different thermal expansion coefficients between the matrix and the coating At the same time,the cracking is affected by the laser cladding process parameters,the alloy powders content, the shape and size of the reinfored phases

关 键 词：激光熔覆 开裂 强化相 热膨胀系数 

分 类 号：TG156.99[金属学及工艺—热处理]