Abstract
The anodization of ADC12 aluminum alloy was investigated in the metal anionic acid media. Anodic oxide films containing foreign elements were formed on ADC12 Al alloy by anodization in the anion complex solution. Furthermore, the rough surface and cracks were considerably smoothened by the deposit of metal anions. When the size of metal anion was small, relatively large amount of metal anions was loaded in anodic films. Existence of <TEX>$MoO_3$</TEX>, <TEX>$TiO_2$</TEX> and MgO was confirmed by XPS. According to the results of Tafel analysis, Mo oxide represented the most noble anti-corrosion potential due to <TEX>$MoS_2$</TEX> formation. Corrosion current densities were generally higher than that of pristine anodic oxide without anion complexes.
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