Journal
APPLIED SURFACE SCIENCE
Volume 289, Issue -, Pages 326-331Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2013.10.159
Keywords
Aluminum; Micro arc oxidation; Electrolyte; Sodium phytate
Categories
Funding
- National Natural Science Foundation of China [51061007]
- Natural Science Foundation of Jiangxi Province, China [20132BAB206011]
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Anodic coatings were obtained by micro arc oxidation on aluminum alloy 2024-T3 in a solution containing only 10 g/L sodium phytate. The morphology, composition, structure and corrosion resistance of anodic coatings were systematically investigated. The results show that the working voltage continually increases during 3 min and bright sparks appear after 25s. Anodic coatings are evenly formed on the substrate and about 2 mu m thick. XPS and XRD analyses reveal that the obtained coatings are mainly composed of alpha-Al2O3 and gamma-Al2O3. Compared with the substrate, the corrosion resistance of the anodized aluminum alloys is improved. (C) 2013 Elsevier B.V. All rights reserved.
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