The invention discloses a carbon-
ceramic brake disc with a wear-resistant and anti-oxidation
coating and a preparation method of the carbon-
ceramic brake disc. The preparation method comprises the following steps that grooving treatment is conducted on the upper surface and the lower surface of a carbon / carbon
composite material disc body, then
coating slurry is brushed in a groove in the upper surface till the groove in the upper surface is filled with the
coating slurry, and then the carbon / carbon
composite material disc body is turned over, the groove in the lower surface is coated with the coating
slurry till the groove in the lower surface is filled with the coating slurry, thus the carbon / carbon
composite material disc body containing the coating slurry is obtained, curing,
carbonization and ceramization treatment are sequentially conducted, and the carbon-
ceramic brake disc is obtained. The preparation process of the wear-resistant and oxidation-resistant coating is simple, large-scale industrial
mass production is easy to realize, the coating is bright and smooth in appearance, the
bonding strength between the coating and the disc body is high, the size precision is easy to accurately control, and the problem that the size is easy to control inaccurately when the ceramic brake disc is subjected to
machining treatment can be effectively solved.