摘要
采用ＣＯ２激光器在Ａ３钢表面激光熔覆ＦｅＷＣ金属陶瓷复合层。对不同ＦｅＷＣ复合粉末成分和扫描速度下熔覆层的显微组织和硬度进行了分析和测试。结果表明。
Fe WC ceramic metal composite coatings were cladded on the surface of A 3 steel by using a 2kW CO 2 laser.To different laser scanning speed and different Fe WC compositions,the microstructure and microhardness of cladded layers are tested and analyzed.The experimental results show that the proper addition of WC crystal powder and increasing of the laser scanning speed enable the braunch structure to get fine and improve the surface microhardness.The average microhardness of the cladded surface can be up to 960kg/mm 2,when 25wt% 9.5μm crystal WC added in Fe 01 metal powder and the Fe WC cladded layer had been treated.
出处
《激光技术》
EI
CAS
CSCD
北大核心
1997年第1期34-37,共4页
Laser Technology
关键词
金属陶瓷复合层
显微组织
激光熔覆
Fe WC ceramic metal composite coating microstructure microhardness
