Research on Corrosion Resistance of Thermo-chemical Reaction Flame Spraying Ceramic Coatings on AZ91D
Zhichao Li
Abstract
Zhichao Li
Abstract
Ceramic coatings were produced by flame spraying on the surface of AZ91D magnesium alloy,the formulations of the ceramic coatings were Al2O3+TiO2+SiO2+ZnO+Al.In the process of flame spraying,accompaniment with a thermo-chemical reaction was carried out,MgSiO4,MgAl2O4 and so on were found in the coatings by means of X-ray analysis.Corrosion resistance tests show that the endurance of the coatings to acid increases by 4 times,the resistance to salt enhances by 1 time.
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Ceramic coatings were produced by flame spraying on the surface of AZ91D magnesium alloy,the formulations of the ceramic coatings were Al2O3+TiO2+SiO2+ZnO+Al.In the process of flame spraying,accompaniment with a thermo-chemical reaction was carried out,MgSiO4,MgAl2O4 and so on were found in the coatings by means of X-ray analysis.Corrosion resistance tests show that the endurance of the coatings to acid increases by 4 times,the resistance to salt enhances by 1 time.
Key concepts: Materials science, Corrosion, Ceramic, Conversion coating, Metallurgy, Magnesium, Salt (chemistry), Composite material