Microstructure and Wear Resistance of Laser Cladded Coatings on Copper Substrate
In order to improve the wear resistance of continuous casting crystallizer, Co-based alloy coatings were prepared on copper substrate by a pulsed Nd:YAG laser. Scanning electron microscopy, X-ray diffraction, microhardness and wear resistance testing were employed to study the microstructure and properties of the cladding coatings. The results show that the friction coefficient and wear mass loss of the cladded coating with the volumn ratio of Stellite X-40：TiC：CaF2=60：10：30 are both the smallest; the average microhardness of the cladded coating is 496.2HV0.2 which is about five times higher than that of the substrate.
W. Y. Wang et al., "Microstructure and Wear Resistance of Laser Cladded Coatings on Copper Substrate", Applied Mechanics and Materials, Vols. 52-54, pp. 1728-1731, 2011