journal article·2010-10

On the degradation mechanism of corrosion protective poly(ether imide) coatings on magnesium AZ31 alloy

Thiago F. da Conceicao, N. Scharnagl, W. Dietzel, K.U. Kainer

Corrosion Science· Volume 52· Issue 10
Publisher page

Abstract

In previous publications of the authors, good performance of poly(ether imide) as corrosion protective coatings for magnesium AZ31 alloy was reported. It was suggested that during the sample degradation magnesium hydroxide could react with the imide ring forming magnesium polyamate and polyamic acid, but this could not be experimentally confirmed. In the present letter, we confirm the occurrence of this reaction by infrared and X-ray photoelectron spectroscopy and discuss its influence in the corrosion behavior observed in electrochemical impedance spectroscopy tests.
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Research context

OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Hydrogen Storage and Materials

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