Abstract
The tribological behaviors of TiO2-ZnO and TiOx coatings deposited by atmospheric plasma spraying were studied to further explore the immanent tribological performance of the oxide system at high temperatures. The results show that both the plasma spraying fabrication process and the high temperature sliding process will lead to the phase transformation of the ceramic coatings. The tribological properties of TiO2-ZnO and TiOx ceramic coatings are temperature-dependent and can be improved with the increase in temperature except that of the TiO2-ZnO coating at 400 degrees C. The lower friction coefficients and wear rates of TiO2-ZnO coatings and TiOx coating at 800 degrees C are mainly related to the smooth film formation on both the worn surface of coatings and counterpart balls, consisting of high temperature lubricating oxides (A-TiO2, R-TiO2, Zn2TiO4, and Ti8O15).

Keywords Plus：SOLID-STATE AMORPHIZATIONCRYSTAL-CHEMICAL APPROACHCOMPOSITE COATINGSATMOSPHERIC PLASMAMICROSTRUCTURELAYERPERFORMANCESYSTEMFLAMEMICROHARDNESS

Published in CERAMICS INTERNATIONAL，Volume49；10.1016/j.ceramint.2023.02.243，JUN 1 2023