The WC/Ni hard metal coating was synthesized by laser cladding with coaxial feeding of its formation elements W/C/Ni powder mixture, basing upon the unique physical and chemical metallurgy within the melt pool. A plump shape WC/Ni layer free of cracks was obtained. The composition distribution of the clad layer, the dissolution behavior of the adding W and C/Ni clad powders and the synthesizing of WC were investigated. The microstructure, phase and WC growth morphology were analyzed. The WC particles synthesized by laser have rectangular or quadrangle cross-section shape with size of 2∼30µm. Step, rotary and cross growth morphologies of WC formation were observed in the synthesized layer. In addition to the WC, the synthesized layer contains phases like W2C 、 CW3 、 FeW3C 、 Fe6W6C 、 W3O 、 W、C、(Fe，Ni).
Synthesizing of WC/Ni hard alloy coating by laser cladding with powder feeding and the growth morphology of WC crystals
Minlin Zhong, Wenjin Liu, Yanxia Chen, Hongqing Sun, Yu Zhang; March 23–25, 2010. "Synthesizing of WC/Ni hard alloy coating by laser cladding with powder feeding and the growth morphology of WC crystals." Proceedings of the Pacific International Conference on Applications of Lasers and Optics. PICALO 2004: 1st Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. Wuhan, People’s Republic of China. (pp. 701). ASME. https://doi.org/10.2351/1.5056116
Download citation file: