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Research Article

Corrosion performance of epoxy/BTESPT/MAO coating on AZ31 alloy

, , , &
Pages 38-46 | Received 01 Apr 2015, Accepted 21 Jul 2015, Published online: 14 Aug 2015
 

Abstract

To enhance the anticorrosion property of epoxy/microarc oxidation (MAO) coating on AZ31 magnesium alloy, bis-(triethoxysilylpropyl)tetrasulphide silane is chosen for surface pretreatment to the MAO coating. Fourier transform infrared, SEM, electrochemical tests and immersion test were used to investigate the structure and corrosion performance of the coatings. The results show that the anticorrosion property of the epoxy/MAO coating on AZ31 magnesium alloy can be improved effectively by the silane pretreatment to MAO coating.

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