为探讨铝阳极氧化沉积铈转化膜形成机理,分别用化学沉积和电沉积法在铝阳极氧化膜上制备了铈转化膜._用SEM和EDS表征了阳极氧化膜、化学沉积铈转化膜和阴极电沉积铈转化膜的形貌和组分,测试了膜层厚度和膜的耐腐蚀性.结果表明:平均孔径89 nm的铝阳极氧化膜经阴极电沉积、化学沉积铈后平均孔径分别减小为38 nm和32nm,2种沉积分别可得到含铈52.10%和20.39%的铈转化膜.2种铈转化膜的平均膜厚分别比铝阳极氧化膜的大1.96 μm和1.23 μm,极化电阻均是铝阳极氧化膜的近3倍.2种铈转化膜形成机理不同是造成它们性质不同的原因.
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