两次氧化条件对阳极氧化铝孔洞的影响-材料研究学报.PDF

第29 卷 第3 期 材 料 研 究 学 报 Vol. 29 No. 3 2 0 1 5 年 3 月 CHINESE JOURNAL OF MATERIALS RESEARCH March 2 0 1 5 两次氧化条件对阳极氧化铝孔洞的影响* 李 鑫 李秉羲 骆玉城 李阳平 (凝固技术国家重点实验室西北工业大学材料学院西安710072) 摘要采用两次阳极氧化法在草酸溶液中制备多孔氧化铝(AAO), 分别研究了电压、氧化时间及草酸溶液浓度对AAO 孔洞 特征的影响。结果表明, 在第一次氧化过程中孔间距随氧化电压的提高而增大, 氧化时间和草酸溶液浓度几乎没有影响; 在 第二次氧化过程中时间、电压及草酸溶液浓度对孔间距基本无影响, 但是随着氧化电压的增大AAO 孔径明显增大, 孔洞呈 六方阵列排布。此外, 第二次氧化电压增大时孔洞形状由圆形到长条形、再到六边形变化; 第二次氧化草酸溶液浓度增大至 0.4 mol/L 时所制备的AAO 的相邻孔洞沿特定取向发生贯穿现象, 甚至溶解, 而孔洞整体分布有序性几乎不受影响。 关键词 无机非金属材料, 多孔氧化铝; 两次氧化法; 草酸溶液; 孔洞特征 分类号 TB321, TQ153 文章编号 1005-3093(2015)03-0221-06 Impacts of Processing Parameters on Morphology of Pores for Anodic Oxide Film Prepared on Aluminum Foil by Twice Anodization LI Xin LI Bingxi LUO Yucheng LI Yangping** (The State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi ’an 710072, China) *Supported by Natural Science Basic Research Plan of Shaanxi Province No. 2013JM8033. Manuscript received June 6, 2014; in revised form October 17, 2014. **To whom correspondence should be addressed, Tel: (029 Email: yangping.li@ ABSTRACT Aluminum foil was anodic oxidized by a two-step anodization process in oxalic acid solu- tions. While the influence of processing parameters, such as voltage, time and solution concentration, for the 1st and 2nd steps of anodization process on the characteristics of pores of the anodic aluminum ox- ides (AAO) films was investigated. Results show tha