目的 为了获得优异耐磨损性能的冷喷涂铝基复合涂层。方法 采用低压冷喷涂技术在Q235碳钢上制备了新型耐磨蚀Al(Y)-Al2O3-MoS2复合涂层，利用三元二次正交试验方法结合曲面响应分析方法，对影响涂层耐磨损性能的制备条件进行了研究。通过二次回归建立了相应的数学模型，并对涂层的耐磨损性能与喷涂温度、送粉速率、Al-Y合金粉与MoS2粉末的质量比等3种因素的关系进行了探讨，分析了它们对涂层耐磨性能的影响，确定了涂层的最佳制备条件。结果 3种因素对涂层耐磨损性能的影响显著性依次为：Al-Y合金粉与MoS2粉末的质量比>喷涂温度>送粉速率。耐磨涂层的最佳制备条件：喷涂温度范围为350~400 ℃，送粉速率为38.20~46.44 g/min，Al-Y合金粉与MoS2粉末的质量比为2~2.5。结论 最佳制备条件下的Al(Y)-Al2O3-MoS2涂层具有良好的耐磨损性能，能够保证海洋油气装备的长效安全和服役可靠性，涂层的磨损机制主要是MoS2的润滑作用以及与对偶件的氧化粘着磨损和磨粒磨损。

The work aims to obtain the cold spray aluminum-based composite coating with excellent wear resistance. Al(Y)-Al2O3-MoS2 composite coatings were prepared on Q235 carbon steel by low-pressure cold spray (LPCS) technology. A ternary quadratic orthogonal test method combined with surface response analysis method was used to study the preparation parameters affecting the wear resistance of the coatings. The corresponding mathematical model was established through quadratic regression and the relationship between the coating wear resistance and the three factors (including spraying temperature, powder feeding rate and mass ratio of Al-Y alloy powder and MoS2 powder) was discussed. Then, the effects of the three factors on coating wear resistance were analyzed and the optimal preparation conditions of coatings were determined. The effects of three factors on the coating wear resistance were as follows: the mass ratio of Al-Y alloy powders to MoS2 powders > the spraying temperature > the powder feeding rate, and the optimal preparation conditions were as follows: the spraying temperature range of 350~400 ℃, the powdering rate of 38.2~46.66 g/min and the mass ratio of Al-Y alloy powder and MoS2 powder of 2~2.5. The Al(Y)-Al2O3-MoS2 coating prepared under the best conditions has good wear resistance, which can ensure the long-term safety and service reliability of marine oil & gas equipment. The wear mechanism of coating mainly includes the lubrication of MoS2 and the oxidation-adhesive wear and abrasive wear of matching parts.