采用激光熔覆技术在AZ31B镁合金表面制备Al-Cu合金熔覆层,研究不同功率下,熔覆层耐磨性和耐腐蚀性的差异。结果表明,当激光功率为400 W时,熔覆层表面的摩擦系数为0.215,明显小于基体的摩擦系数。其对应的腐蚀电位值和腐蚀电流密度值比基体提高了170 mV,降低了一个数量级。 Al-Cu alloy cladding layer was prepared on the surface of AZ31B magnesium alloy by laser cladding. The difference of wear resistance and corrosion resistance of the cladding layer was studied under different power. The results show that when the laser power is 400 W, the friction coefficient of the coating surface is 0.215, which is obviously smaller than the friction coefficient of the substrate. The corresponding values ​​of corrosion potential and corrosion current density are increased by 170 mV, which is an order of magnitude lower than that of the matrix.