Corrosion of Magnesium Alloy AZ31 Coated by Plasma Electrolytic Oxidation.

Autor:	Kalinichenko, O. O., Holovenko, V. O., Roienko, K. V., Misnyankin, D. O., Girin, O. B., Snizhko, L. O.
Zdroj:	Surface Engineering & Applied Electrochemistry; Sep2019, Vol. 55 Issue 5, p595-601, 7p
Abstrakt:	In this work, plasma electrolytic oxidation was performed on AZ31 magnesium alloy. The electrolytes contained mixtures of sodium silicate, sodium hexamethaphosphate, potassium hydroxide, and potassium fluoride. Scanning electron microscopy, X-ray diffraction, porosity measurements, atomic analysis, and exposition in 3% NaCl were carried out to investigate the microstructure, elemental/phase composition, and corrosion resistance of the coatings. The results showed that the coating formed in both silicate- and phosphate-containing electrolyte were mainly composed of MgO, Mg(OH)2, Mg2SiO4, and Mg3(PO4)2 showing the most dense structure and the best corrosion resistance. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink