作　　者： ; ; ;

机构地区： 西安建筑科技大学材料学院

出　　处： 《腐蚀与防护》 2009年第10期742-744,共3页

摘　　要： 采用化学沉积法在铝阳极氧化膜上制备铈转化膜。通过SEM和EDS表征了阳极氧化膜、化学沉积铈转化膜形貌和组成成分;用极化曲线法、EIS交流阻抗法和酸、碱点滴试验对膜耐蚀性进行了评估。结果表明,在铝阳极氧化膜上经过化学沉积可制备铈转化膜,其耐蚀性优于铝阳极氧化膜的耐蚀性。优化的铈转化膜工艺为:3 g/LCe2(SO4)3,20 ml/L H2O2,温度50℃,时间60 min。 Cerium conversion film was prepared on anodized aluminum alloy by chemical deposition. The morphology and elemental composition of the cerium conversion film and anodized aluminum alloy were analyzed by SEM and EDX. The corrosion resistance was evaluated by methods of polarization curves, electrochemical impedance spectroscopy and drop experiment. It was found that the cerium conversion film could be readily prepared on anodized aluminum alloy, and had better corrosion resistance than the anodized aluminum alloy. The optimal technical parameters of cerium conversion film were 3 g/L Ce2 （SO4）3, 20 ml/L H2O2, 50 ℃ and 60 min.

关 键 词： 铝阳极氧化 化学沉积 铈转化膜 耐蚀性

领　　域： [金属学及工艺] [金属学及工艺]