HVOF of CoNiCrWC powders on 304 steel substrate is conducted,and the 5kW continuous wave CO2 laser was used to clad composite coatings.The morphologies of the composite coatings by laser solidification were observed with scanning electron microscopy (SEM). Hardness and wear resistance of the solidification coatings was test and analyze. The results show that the metallurgical bonding formed coatings and substrate; The average micro-hardness of the coatings are HV0.2964.314, which is much higher than the substrate; The wear volume is reduced by about 89%. Roughness mea...