探讨了混合酸体系中电解质浓度与氧化参数对铝高压阳极氧化膜微观形貌的影响.结果表明,磷酸、草酸和成膜添加剂的浓度对氧化膜的孔径和孔的形貌有显著影响,随着电解质浓度的增加,氧化膜的孔径增大,变化范围为250～500 nm,孔形貌从圆形变为规则六边形结构;较高的峰值电流密度导致氧化膜的外边缘破裂;铝高压阳极氧化膜的纵截面照片表明,混合酸体系中的铝高压阳极氧化膜呈现双层结构;厚的多孔层和薄的致密层,孔道垂直于致密层和铝基底,且互相平行.
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