摘要
利用2kWC02激光器在A3钢板上进行Ni基WC金属陶瓷的激光熔覆试验．研究了不同碳化钨含量下熔覆层的组织和硬度变化规律．结果表明，熔覆层中粘结金属硬度随复合粉中碳化钨含量的增加呈马鞍形变化，同一熔覆层中，粘结金属硬度曲线平稳，无明显梯度变化，但复合层内存在一定的成分与组织梯度；粘结金属组织与碳化钨含量关系密切．
A 2KW CO2 laser has been used to clad Ni based -WC ceramic-metal to steel A3.Effects of WC pareicle's weight fractions on the microstructure and microhardness of cladding layers are studied.Results show that the composition and microstructure are not unified in a coationg and have something to do with the weight fractiions of WC particldes.The microhardness of binder is unified and it will be altered at various WC weight fractions.
出处
《热加工工艺》
CSCD
北大核心
1997年第3期14-16,共3页
Hot Working Technology
基金
武汉市晨光科技基金
北京中关村地区联合测试基金
关键词
激光熔覆
金属陶瓷
组织
硬度
laser cladding
ceramic-metal
bender
microstructure
microhardness
