镁及镁合金具有低密度、高的比强度和比刚度、优良的阻尼减震性能,逐渐成为汽车、摩托车轻量化和节约能源的理想材料.但镁合金较差的耐蚀性限制了其在汽车、航空等工业中的广泛应用.改善镁合金耐蚀性的有效途径之一是在镁合金表面施加一层保护涂层.该涂层作为腐蚀屏障,能有效地隔离基体与腐蚀介质.综述了镁合金表面处理的最新研究状况,主要包括微弧氧化、金属铝涂层、含氟协和涂层、物理气相沉积、离子注入等,并展望了其应用前景.
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