LAUSR

Abstract Thermal-sprayed ceramic coatings are used worldwide to provide protection from corrosion and wear on components. Nevertheless, they exhibit very poor tribological performance in corrosive conditions, primarily because the high porosity and low cohesive strength, resulting in severe corrosion of metal materials and wear of coatings. Herein, a series of mullite coatings are deposited on the surface of titanium alloys under different deposition temperatures and the splats behavior, mechanical properties, corrosion and wear performance of mullite coatings are studied. Results show that adjusting the deposition temperature can modify the splats behaviors, improve the microstructure and degree of crystallinity and enhance the hardness and cohesive strength. Owing to the improvements, the specimens deposited at higher temperatures have the excellent anti-corrosion and wear-resistant ability.