以MoS2/Cu复合粉体为原料,采用等离子喷涂技术在2A12铝合金基体上制备MoS2/Cu基复合涂层.运用扫描电镜、能谱、X射线衍射、拉曼光谱等手段对涂层显微结构、磨损表面进行表征,并利用GTM-3E球盘式真空摩擦磨损仪探讨真空环境下MoS2/Cu基复合涂层的摩擦行为.结果表明:MoS2颗粒均匀分布于涂层中;涂层结构比较致密且与铝基体结合牢固;XRD分析表明复合涂层物相组成主要为Cu,MoS2相及Cu2O相.实验条件下复合涂层表现出优异的真空减摩效果,涂层的真空摩擦因数在0.05～0.15之间.真空磨损过程中,MoS2自润滑膜层的形成是涂层低摩擦因数的主要原因;真空磨损机理主要表现为疲劳磨损和脆性断裂.
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