Research on the Interface of Infiltration Brazed Tungsten Carbide Composite Cladding
WC-Ni-Cr composite cladding is fabricated on the Q235 steel by infiltration brazed in a vacuum furnace. Microstructure of interface and welding specimen's longitudinal section of alloy coating are investigated by CMM-88E metallographic microscope and FEI Quanta200 scanning electron microscope. Element diffusion and distribution along the longitudinal section are tested by the Energy Disperse Spectroscopy (EDS), produced by Oxford Corporation; Influencing factors of the coating's brazed interface are analyzed. The results show that when nickel base coating powders are used for infiltration brazed, the BNi-2 solder is appropriate and the appropriate temperature should be in 1120~1140 °C. The welding interface of vacuum brazing compact very well and the existence of element diffusing forms the metallurgy welding contact surface.
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
J. W. Yan et al., "Research on the Interface of Infiltration Brazed Tungsten Carbide Composite Cladding", Advanced Materials Research, Vols. 154-155, pp. 1004-1007, 2011