为了提高铝合金微弧氧化膜的摩擦磨损性能,在微弧氧化电解液中添加石墨颗粒,并引入超声波进行微弧氧化,制备了含石墨的复合膜.利用扫描电子显微镜(SEM)观察了膜的表面和截面形貌,用X射线衍射仪(XRD)和激光拉曼光谱仪分析了膜的组成,在摩擦试验机上评价了膜的摩擦学性能.结果表明:添加石墨能有效降低微弧氧化膜的摩擦系数;同时引入超声波更有利于石墨微粒的分散,促进其进一步扩散和渗透,从而得到石墨分布更均匀、更致密的复合膜,膜的摩擦系数和磨损程度进一步降低.
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