A new self-ordering regime for fast production of long-range ordered porous anodic aluminum oxide films

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• 作者：Yi Li ; ^{msliyi@scut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yuyan Qin ; Shiyu Jin ; Xing Hu ; Zhiyuan Ling ; Qihong Liu ; Jinfu Liao ; Cheng Chen ; Yanhua Shen ; Ling Jin
• 关键词：Anodic aluminum oxide ; aluminum anodization ; interpore distance ; self-ordering
• 刊名：Electrochimica Acta
• 出版年：2015
• 出版时间：1 October 2015
• 年：2015
• 卷：178
• 期：Complete
• 页码：11-17
• 全文大小：1774 K

文摘

Porous anodic aluminum oxide (AAO) films with large interpore distance (D_int, 307–415 nm) have been fabricated by using a new self-ordering regime in oxalic acid based electrolyte systems. The new regime corresponds to the stage with a stable voltage during constant-current anodization process, accompanied by high anodization voltage (U_a, 135–183 V) and current density (J_a, 300–500 A m^–2) which facilitate the high speed growth of long-range ordered porous AAO films. In addition, the formation mechanism of the self-ordering regime, together with the influence of anodization conditions on the microstructural parameters of AAO films have been investigated in detail. Experimental results showed that the value of the stable U_a during constant-current anodization can be adjusted by varying the anodization conditions. Accordingly, the self-ordering window of the as-prepared porous AAO films can be modulated, widening the regulating range of D_int to a large extent.