Aiming at the problem of the poor corrosion resistance of magnesium alloys for automobiles, Al-TiC and Al-TiC-Y₂O₃ cladding layers were prepared on the AZ63-Er alloy by laser cladding technology, studied the effects of Al:TiC mass ratio and Y₂O₃ addition on the microstructure, phase composition, hardness and corrosion resistance of the cladding layer. The results show that the Al-TiC laser cladding layer with different mass ratios has metallurgical bonding with AZ63-Er alloy substrate, and there are no pores or cracks at the interface. The main phases of the Al-TiC laser cladding layer are Ti₃AlC, TiC, Mg₂Al₃, Al₃Mg₂, Al, Mg, AlMg and Ti₆O. The hardness of laser cladding layer with the mass ratios of Al:TiC are 8:1, 4:1 and 2:1 are about 2.75, 3.24 and 3.94 times of the substrate. The corrosion resistance of Al-TiC cladding layer is higher than that of the AZ63-Er alloy substrate, and the corrosion resistance of the Al:TiC cladding layer with the mass ratio of 8:1 is the best. Al₃Y and Al₄MgY phases are formed in the Al-TiC-Y₂O₃ cladding layer after Y₂O₃ addition. The hardness of the Al-TiC-Y₂O₃ cladding layer is significantly higher than that of the Al-TiC cladding layer. The Al-TiC-Y₂O₃ composite cladding layer has the best hardness and corrosion resistance when the Y₂O₃ content is 0.6%.

针对汽车镁合金耐蚀性差的问题，采用激光熔覆技术在AZ63-Er合金上制备了Al-TiC和Al-TiC-Y ₂ O ₃熔覆层，研究了Al：TiC质量的影响。比例和Y ₂ O _3的添加对包覆层的显微组织，相组成，硬度和耐腐蚀性的影响。结果表明，不同质量比的Al-TiC激光熔覆层与AZ63-Er合金基体具有冶金结合，界面处无气孔或裂纹。Al-TiC激光熔覆层的主要相是Ti ₃ AlC，TiC，Mg ₂ Al ₃，Al ₃ Mg ₂，铝，镁，铝镁和Ti ₆ O.与Al的质量比激光熔覆层的硬度：的TiC是8：1,4：1和2：1的基板的约2.75，3.24和3.94倍。Al-TiC熔覆层的耐蚀性高于AZ63-Er合金基体，且质量比为8：1的Al：TiC熔覆层的耐蚀性最佳。人₃ Y与Al ₄形成在所述Al-TIC-Y MGY阶段₂ ö ₃包覆层Y.后₂ ö ₃加法。Al-TiC-Y ₂ O ₃包覆层的硬度明显高于Al-TiC包覆层的硬度。Al-TiC-Y ₂ O当Y ₂ O ₃含量为0.6％时，₃复合包覆层具有最佳的硬度和耐腐蚀性。