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Journal of Coatings Technology and Research
Erschienen in: Journal of Coatings Technology and Research 2/2013

01.03.2013

Corrosion behavior of 2024 aluminum alloy anodized in presence of permanganate and phosphate ions

verfasst von: Maysam Mohammadi, Ali Yazdani, Mohammad E. Bahrololoom, Akram Alfantazi

Erschienen in: Journal of Coatings Technology and Research | Ausgabe 2/2013

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Abstract

In this article, the effects of two inorganic corrosion inhibitors, permanganate and phosphate anions, on morphology, composition, thickness, and corrosion resistance of the anodic film formed on 2024 aluminum alloy in sulfuric acid were investigated. Surface morphology of the oxide films were studied by field emission scanning electron microscopy. Electrochemical impedance spectroscopy and potentiodynamic polarization tests were conducted to assess the corrosion resistance of the coatings. These analyses showed that the presence of the mentioned inhibitors changed the coating morphology, especially in the case of phosphate ions. Corrosion results indicated that using inhibitors during the anodizing process increased the corrosion resistance of the anodized samples. The increases were approximately 81% and 97% for 0.05 M of permanganate and phosphate ions, respectively, compared with the anodized coatings in the absence of additives. An increase in the inhibitor concentration results in better corrosion resistance of the aluminum anodic layer.
Vorheriger Artikel Corrosion inhibition of aluminum by organic coatings formulated with calcium exchange silica pigment
Nächster Artikel Volume shrinkage of UV-curable coating formulation investigated by real-time laser reflection method

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Metadaten
Titel
Corrosion behavior of 2024 aluminum alloy anodized in presence of permanganate and phosphate ions
verfasst von
Maysam Mohammadi
Ali Yazdani
Mohammad E. Bahrololoom
Akram Alfantazi
Publikationsdatum
01.03.2013
Verlag
Springer US
Erschienen in
Journal of Coatings Technology and Research / Ausgabe 2/2013
Print ISSN: 1547-0091
Elektronische ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-012-9459-x

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