On the growth sequence of highly ordered nanoporous anodic aluminium oxide
On the growth sequence of highly ordered nanoporous anodic aluminium oxide
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DOI：
10.1016/j.matdes.2005.02.018
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发表时间：
2006-01-01
影响因子：
8.4
通讯作者：
Saedi, A.
中科院分区：
文献类型：
--
作者：
Ghorbani, M.;Nasirpouri, F.;Saedi, A.
在草酸电解液中，采用两步阳极氧化法制备了阳极氧化铝膜。通过非原位接触式原子力显微镜和扫描电子显微镜等微观分析手段，研究了不同生长顺序的阳极氧化铝膜的有序性特征（有序孔域、平均孔径大小和通孔排列）。在铝的电解抛光表面上，可以看到一些凹陷的平坦区域。铝的单次阳极氧化产生纳米孔尺寸的宽分布，而诱导高度有序的半球形图案，其为第二阳极氧化步骤发挥有序的成核位点。此外，有序畴的生长行为与第一步阳极氧化的持续时间存在准线性关系。理想生长的膜的通孔排列不受增加第二步阳极氧化的持续时间的影响。(C)2005爱思唯尔有限公司保留所有权利。
Anodic aluminium oxide films were fabricated by well known two-step anodizing process in oxalic acid electrolyte. The ordering characteristics (ordered pore domains, average pore diameter size and through-pore arrangement) of anodic aluminium oxide films, obtained in different growth sequences, were identified by microscopic analysis such as ex situ contact-mode atomic force microcopy and scanning electron microscopy. Flattened areas in which some pits are seen mostly cover the electropolished surface of aluminium. Single anodizing of aluminium produces a broad distribution of nanopore size, whereas induces a highly ordered hemispherical pattern, which plays the ordered nucleation sites for the second anodizing step. Moreover, a quasi-linear growth behavior exists for the ordered domain growth versus the duration of first step anodizing. The through-pore arrangement of ideally grown membranes is not influenced by increasing the duration of second step anodizing. (C) 2005 Elsevier Ltd. All rights reserved.