扫描速度和稀土元素对激光熔覆(WC+SiC)/Ni基复合涂层显微组织和性能的影响

Influence of Scanning Speed and RE on Microstructure and Properties of Laser Cladding (WC+SiC)/Ni Based Composite Coating

利用２ｋＷ 的ＣＯ２ 激光器在１６Ｍｎ 钢表面激光熔覆（ＷＣ＋ ＳｉＣ）／Ｎｉ基复合涂层，对熔覆层中的界面组织、显微硬度的分布及耐磨性作了分析，同时也分析了涂层合金元素中添加稀土元素对涂层性能的影响。

Laser Cladding of (WC+SiC)/Ni based composite coating on the 16Mn steel has been performed with 2kW CO 2 laser beam. In this paper, the interface structure, distribution of microhardness and wear resistance of coating were investigated. In addition, the influence of additional RE in the coating alloy on the pro perties of the coating was analysed.