An alumina-silicon dioxide composite coating was fabricated by cold spraying on AZ31 magnesium alloy. The microstructure, mechanical properties (microhardness, bonding strength and tribological behaviour) and anticorrosion property of the coating as a function of the ceramic volume were investigated. The results show that the composite coating presents higher bonding strength and microhardness. Addition of silicon dioxide significantly enhances the anti-wear and anti-corrosion performances of AZ31 magnesium alloy.

alumina-silicon dioxide composite coatings, bonding strength, cold spraying, magnesium alloys, microhardness, microstructure
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2017
DVS Media GmbH
Topics
Microstructure Magnesium alloys Alumina ceramics Cold spray coating Bonding strength Microhardness
Issue Section:
Poster Session: Arc and Laser Spraying Processes
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