镁合金是目前使用的最轻的金属材料,因其优良的物理和力学性能受到了广泛的关注.特别是高的比强度使其成为以减轻自重为目的的汽车和航空领域的理想金属材料.然而,镁合金的耐蚀性差成为阻碍镁合金推广应用的一个重要问题.综述了镁合金的腐蚀问题和目前国内外的几种镁合金防护方法的研究现状.提高镁合金耐蚀性的途径主要有:开发新的镁合金;采用快速凝固工艺;应用表面技术,如化学转化处理、阳极氧化、金属镀膜、激光表面改性、离子注入等表面处理技术等.
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