Corrosion protection properties of inhibitor containing hybrid PEO-epoxy coating on magnesium

Yang, J.; Blawert, C.; Lamaka, S.V.; Snihirova, D.; Lu, X.; Di, S.; Zheludkevich, M.L.

Journalpaper

Corrosion protection properties of inhibitor containing hybrid PEO-epoxy coating on magnesium

Abstract

A hybrid PEO-epoxy coating was developed for magnesium. A highly-efficient corrosion inhibitor (3-methysalicylate) was impregnated into the anodized layer, which was sealed by an epoxy layer through dip-coating process. Influence of dip-coating parameters on coating properties was investigated. The corrosion performance was evaluated through general and localized electrochemical techniques. As a result, the epoxy layers registered superior resistance, whereas the anodized layer suppressed corrosion expansion. Longer immersion and triple-dipping favored the production of better sealed epoxy layer. The active protection mechanism was achieved by suppression the re-deposition of detrimental impurity and/or adsorption upon the exposed surface from incorporated inhibitor.

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URL: https://publications.hereon.de/id/36051/
Authors:Yang, J., Blawert, C., Lamaka, S.V., Snihirova, D., Lu, X., Di, S., Zheludkevich, M.L.
Year:2018
In: Corrosion Science
Volume:140
Pages:99 - 110
Publisher:Elsevier, Orlando
Type:Journalpaper
ISSN: 0010-938X
Cite as: Yang, J.; Blawert, C.; Lamaka, S.V.; Snihirova, D.; Lu, X.; Di, S.; Zheludkevich, M.L.: Corrosion protection properties of inhibitor containing hybrid PEO-epoxy coating on magnesium. In: Corrosion Science. Vol. 140 (2018) 99 - 110. (DOI: /10.1016/j.corsci.2018.06.014)