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水煮处理前或后,将腐蚀铝箔作为阴极,在Zr(NO3)4溶液中进行直流电解沉积→500℃热氧化处理,然后在硼酸溶液中进行2级阳极氧化制得复合阳极氧化膜.用计算机监控系统采集了阳极氧化过程中的升压取线,用扫描电镜(SEM)和EDS能谱分析了氧化膜表面形貌和成分,用电化学交流阻抗(EIS)、LCR数字电桥测试了阳极氧化膜的电化学性能.结果表明:水煮处理前对腐蚀铝箔实施电解沉积-热氧化处理,可以使阳极氧化过程形成电量降低20%,氧化膜中Zr含量较高,氧化膜的比电容提高,但比电阻减小;水煮处理后对腐蚀铝箔实施电解沉积-热氧化处理,则阳极氧化时形成电量增加,阳极氧化膜中Zr含量较低,氧化膜比电容降低,但比电阻较高.

参考文献

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