▎ 摘　　要

Self-sealing pore is one of the important technologies to control the pore structure, improve the antifriction and corrosion resistance of micro-arc oxidation coating. In order to solve the problem that the poorer stability of physical sealing pore and expansion of sealing agent impacted the structure of the coating, this paper used the conductivity properties of graphene oxide to prepare GO/TiO2 self-sealing pore ceramic coatings with antifriction effect. The effect of graphene oxide concentration on pore structure and antifriction of ceramic coating was discussed. It is found that the electrochemical balance process of electrolyte is changed by adding graphene oxide, which contributes to controlling the pore structure of the GO/TiO2 coating. When graphene oxide concentration is 5 g/L, the porosity, pore size and average friction coefficient of the self-sealing pore ceramic coating (G5) are 3.6%, 2.5 mu m and 0.1, which decrease by 83.2%,78.4% and 87.5%, respectively, compared with the G0 coating. It is believed that the pore structure of micro-arc oxidation coating can be controlled through controlling graphene oxide concentration, which can affect the colloidal deposition and energy release. This provides a new idea for the preparation of antifriction self-sealing pore coating.