在NaAlO2-Na3PO4复合电解液体系中,用微弧氧化技术在AZ91D镁合金表面原位制备了一层致密的氧化膜,分析了纳米TiO2加入对该膜表面形貌、物相、耐腐蚀性能和摩擦磨损性能的影响.结果表明:电解液中不加入纳米TiO2制备的微弧氧化膜表面疏松多孔,由MgAl2O4、Mg3(PO4)2、MgO以及Mg相构成,并以MgAl2O4相为主;加入纳米TiO2后,膜层表面变得致密,膜层中增而加了TiO2相;与基体相比,两种微弧氧化膜的耐腐蚀性和耐磨性均显著提高,加入纳米TiO2制备微弧氧化膜的耐腐蚀性和耐磨性更好.
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