Composite carbide ceramic powder material as well as preparation method and application thereof

The invention discloses a composite carbide ceramic powder material as well as a preparation method and application thereof, and belongs to the field of preparation of high-entropy ceramic materials. Chloride ions of transition metal chloride are substituted in a mixed solution of absolute ethyl alcohol and acetylacetone to obtain metal alkoxide, the metal alkoxide reacts with a carbon source to obtain a carbide liquid-phase precursor, and the carbide liquid-phase precursor is prepared into the composite carbide ceramic powder material. Tetraethoxysilane reacts with a carbide liquid-phase precursor after catalytic hydrolysis to obtain a composite carbide ceramic powder material, the composite carbide ceramic powder material is subjected to distillation, curing and high-temperature heat treatment to obtain ceramic powder, and a metal-containing monomer polymerization mode is adopted by a liquid-phase polymer precursor method to obtain the composite carbide ceramic powder. The ceramic composite carbide ceramic