Effects of voltage on microstructure and properties of micro-arc oxidation ceramic coatings on AZ31B magnesium alloy under constant current–constant voltage operation mode

Purpose The purpose of this paper is to study the effects of voltage on microstructure and properties of micro-arc oxidation (MAO) ceramic coatings formed on AZ31B magnesium alloy under the constant current–constant voltage operation mode. Design/methodology/approach The wear and corrosion resistanc...

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Veröffentlicht in:	Anti-corrosion methods and materials 2023-11, Vol.70 (6), p.513-521
Hauptverfasser:	Shu, Y.F., Jiang, B., Wang, C., Song, R.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Ceramic coatings Ceramic glazes Corrosion Corrosion resistance Corrosive wear Cracks Electric potential Electrochemistry Electrodes Electrolytes Energy Frictional wear Magnesium Magnesium alloys Magnesium base alloys Microstructure Morphology Oxidation Power supply Protective coatings Scanning electron microscopy Silicates Voltage Wear Wear resistance Workstations
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Zusammenfassung:	Purpose The purpose of this paper is to study the effects of voltage on microstructure and properties of micro-arc oxidation (MAO) ceramic coatings formed on AZ31B magnesium alloy under the constant current–constant voltage operation mode. Design/methodology/approach The wear and corrosion resistance of MAO coating on AZ31B magnesium alloy was studied by MAO in silicate electrolyte under constant current and constant voltage. Findings When the voltage is 360 V, the wear and corrosion resistance of AZ31B magnesium alloy is the best. Originality/value The wear and corrosion resistance of MAO coating on AZ31B magnesium alloy was studied by friction wear and electrochemical workstation.
ISSN:	0003-5599 0003-5599 1758-4221
DOI:	10.1108/ACMM-07-2023-2855