Changes in Wettability and Corrosion Properties of Coatings Obtained on MA8 Magnesium Alloy after Accelerated Climatic Tests

Abstract:

In the presented study, changes in the wettability and corrosion properties of composite coatings formed on the MA8 magnesium alloy by plasma electrolytic oxidation (PEO) with subsequent treatment with organofluorine polymers were investigated after accelerated climatic tests in a salt spray chamber. It was found by the sessile drop method that after accelerated climatic tests the contact angle decreases by 2.5 times for PEO coatings, and by 15o for composite coatings. Evaluation of the electrochemical properties of the composite layers revealed an insignificant decrease in the value of the corrosion current density after 40 days of holding samples in a salt spray chamber.

• Periodical: Key Engineering Materials (Volume 910)
• Pages: 684-689
• DOI: https://doi.org/10.4028/p-lu09le
• Online since: February 2022
• Authors: Konstantine V. Nadaraia, Dmitry V. Mashtalyar*, Mariia S. Gerasimenko, Mariia I. Piatkova, Sergey L. Sinebryukhov, Sergey V. Gnedenkov
• Keywords: Composite Coatings, Corrosion, Magnesium Alloys, Plasma Electrolytic Oxidation, Salt Spray Chamber

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