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Formation of Nanoporous Oxide at Aluminum Anodizing |
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11.02.2009 г. |
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Formation of Nanoporous Oxide at Aluminum Anodizing A. I. Shcherbakov, I. B. Skvortsova, V. I. Zolotarevskii, G. P. Chernova, and V. E. Mashchenko Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia e-mail:
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Received May 26, 2008 Abstract — The effect of electrochemical anodic oxidation on the formation of porous anodic oxide films (PAOF) on a high-grade aluminum (99.99%) in a sulfuric acid solution is studied. Anodizing modes are chosen such as to obtain PAOF with ordered nanostructure. It is shown that under an atomic force microscope, the anodic film reveals a cellular structure. The parameters of the latter are as follows: diameters of a pore (30–35 nm) and a circle circumscribed around a hexahedral cell (90 nm). A possible mechanism of the formation of regular nanoporous structures of anodic aluminum oxide is proposed. PACS numbers: 82.45.Cc, 81.71.-b DOI: 10.1134/S2070205109010109
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