Research on Thermal-shock Resistance of Thermo-chemical Reaction Flame Spraying Ceramic Coatings on AZ91D
To broaden the application of magnesium alloy, improve their performance, ceramic coating (Al2O3 + TiO2 + SiO2 + ZnO + Al) was produced by flame spraying on the surface of magnesium alloy AZ91D. The magnesium alloy becomes into a new type of composite material with metal performance (strength and toughness) and ceramic properties (high-temperature resistance, corrosion resistance and so on). MgSiO4, MgAl2O4 and so on were found in the coatings by X-ray analysis. That means in the process of flame spraying accompanied by a thermo-chemical reaction, it happened between the ceramic powder and the matrix, ceramic powder and ceramic powder. A new way of combining was found in the process of thermo-ehemical reaction, that was chemical combining. The traditional ways were machinery chimeric and physical combining. The thermal shock test shows that ceramic coatings have good thermal-shock resistance.
国家科技期刊平台
NSTL
万方数据
维普
