Study on Microstructure and mechanical properties of Cold Spraying Al coating on Magnesium Alloy

Al coating is formed on AZ31 magnesium alloy by Cold spraying. plane and cross-sectional microstructure of cold spraying Al coating are investigated. The results show that Al particles are deformed significantly compared with original particles and Al coating is well bonded with the substrate. The microhardness of Al coating is about 178.3 HV0.1 and the bonding strength is about 27.0MPa.