Structural features of anodic oxide films formed on aluminum substrate coated with self-assembled microspheres
Structural features of anodic oxide films formed on aluminum substrate coated with self-assembled microspheres
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DOI：
10.1016/j.corsci.2008.11.018
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发表时间：
2009-07-01
影响因子：
8.3
通讯作者：
Ono, Sachiko
中科院分区：
文献类型：
--
作者：
Asoh, Hidetaka;Uchibori, Kota;Ono, Sachiko
利用扫描电子显微镜和原子力显微镜研究了自组装微球在铝基体上形成的阳极氧化膜的结构特征。在中性溶液中的第一次阳极氧化中，阻挡型膜的生长被部分抑制在球体和下面的铝基板之间的接触区域中，导致在阳极氧化膜中形成有序的凹坑阵列。在随后的第二次阳极氧化后，在低于第一次阳极氧化电压的酸性溶液中。仅在每个凹坑内产生纳米孔。纳米多孔区域可以通过后化学蚀刻使用多孔区域和周围阻挡区域之间的结构尺寸的差异来选择性地去除。探讨了铝基体上多步阳极氧化微球膜的阳极氧化生长机理。(C)2008爱思唯尔有限公司保留所有权利。
The structural features of anodic oxide films formed on an aluminum substrate coated with self-assembled microspheres were investigated by scanning electron microscopy and atomic force microscopy. In the first anodization in neutral solution, the growth of a barrier-type film was partially suppressed in the contact area between the spheres and the underlying aluminum substrate, resulting in the formation of ordered dimple arrays in an anodic oxide film. After the subsequent second anodization in acid solution at a voltage lower than that of the first anodization. nanopores were generated only within each dimple. The nanoporous region could be removed selectively by post-chemical etching using the difference in structural dimensions between the porous region and the surrounding barrier region. The mechanism of anodic oxide growth on the aluminum Substrate coated with microspheres through multistep anodization is discussed. (C) 2008 Elsevier Ltd. All rights reserved.