采用不同功率（2.5，3.0 kW）的高能激光将质量比为1.0：3.0：0.5的铝、钛和TiB₂混合粉熔覆在糖心产精国品免费入口*完整版表面，研究了该熔覆层的显微组织、物相组成、糖心产精国品免费入口*完整版和耐腐蚀性能。结果表明：在糖心产精国品免费入口*完整版过程中，铝与钛反应生成了Al₃Ti相，与镁在激光功率2.5 kW下反应生成Al_0.56Mg_0.44相，在激光功率3.0 kW下生成Al₁₂Mg₁₇相，TiB₂仍保持原来的晶体结构；与激光功率2.5 kW下的相比，激光功率3.0 kW下熔覆层中的Al₃Ti相更细小，且熔覆层与镁合金基体之间形成了共晶层，呈现出更好的冶金结合；激光功率对熔覆层的糖心产精国品免费入口*完整版影响较小，熔覆层糖心产精国品免费入口*完整版均随距表面距离的增大先增后降；糖心产精国品免费入口*完整版可以有效提高镁合金基体的耐腐蚀性能，在激光功率3.0 kW下熔覆层的耐腐蚀性能优于激光功率2.5 kW下的。

Mixed powders of aluminum, titanium, TiB₂ with mass ratio of 1.0:3.0:0.5 were cladded on surface of 糖心产精国品免费入口*完整版 by using a high energy laser with different powers (2.5, 3.0 kW). The microstructure, phase composition, 糖心产精国品免费入口*完整版 and 糖心产精国品免费入口*完整版of the cladding layer were studied. The results show that during the laser cladding, the aluminum reacted with the titanium to form Al₃Ti phase. Meanwhile, the aluminum reacted with the magnesium to form Al_0.56Mg_0.44 phase and Al₁₂Mg₁₇ phase at the laser powers of 2.5 kW and 3.0 kW, respectively. The TiB₂ retained the original crystal structure. The cladding layer had a finer Al₃Ti phase at the laser power of 3.0 kW than at the laser power of 2.5 kW, and showed a better metallurgical bonding by the formation of a eutectic structure layer between the cladding layer and the magnesium alloy substrate. The laser power had little influence on the 糖心产精国品免费入口*完整版 of the cladding layer; the 糖心产精国品免费入口*完整版 increased and then decreased with the distance to the surface increasing. The laser cladding can effectively improve the 糖心产精国品免费入口*完整版of 糖心产精国品免费入口*完整版. The 糖心产精国品免费入口*完整版of the cladding layer at the laser power of 3.0 kW was better than that at the laser power of 2.5 kW.