journal article·2011-01

Effects of Working Frequency on the Structure and Corrosion Resistance of Plasma Electrolytic Oxidation Coatings Formed on a ZK60 Mg Alloy

Peibo Su, Xiaohong Wu, Zhaohua Jiang, Yun Guo

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Abstract

The effects of working frequency on the composition, morphology, and corrosion resistance of ceramic coatings formed on a ZK60 magnesium alloy by plasma electrolytic oxidation were studied in this paper. It is found that the coatings are composed of MgO only. The rise of frequency led to an increase in the number of the channels and a decrease in the discharge channel diameter. The corrosion resistance of the coated samples was improved compared with that of substrate, which became more obvious as the working frequency was increased. This could be due to the more compact structure of the alloy formed at higher frequencies.
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Research context

OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Aluminum Alloys Composites Properties

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