利用附着力及铅笔硬度测试、浸泡试验、盐雾试验、电化学试验等方法对AZ91D镁合金表面的聚氨酯涂层及环氧聚氨酯涂层形貌和性能进行了研究,并对两种涂层的腐蚀保护效果及机理进行了探讨.结果表明,这两种涂层都能显著提高镁合金的耐腐蚀性能,与基材附着良好且硬度高.与聚氨酯涂层PU相比,环氧聚氨酯涂层ER/PU的耐腐蚀效果更好.
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