采用恒电压电解法研究了铝在硫酸中的阳极氧化过程.通过金相显微镜、扫描电镜(SEM)观测了铝阳极氧化膜的厚度和微观结构特征,并通过X射线能谱仪(XPS)分析了氧化膜的成分.结果表明:长时间氧化后,氧化膜厚度达到一个极限值,此值与外加电压、电解液浓度及温度有关;铝试样本身存在缺陷时,对氧化膜的制备产生一定的影响;阳极氧化膜的主要成分为Al和O,并含有杂质元素S.
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