Ceramic and carbon nano-fiber composite material and preparation method thereof

The invention relates to a ceramic and carbon nano-fiber composite material and a preparation method thereof. The preparation method has a principle of directly growing carbon nano-fiber in a ceramic hole which is formed in a ceramic body in the ceramic forming process to prepare the ceramic and composite material. The specific process comprises the following steps: mixing a metallic catalyst and ceramics; inputting carbonous gas to a system in an intermediate stage of preparing the ceramics by sintering or pyrogenation; directly growing the carbon nano-fiber in the hole by utilizing the metallic catalyst formed in the ceramic hole; and further rising the temperature and sintering or pyrolyzing the ceramics which grows the carbon nano-fiber to prepare the carbon nano-fiber and ceramic composite material. Through the in-situ preparation method, the ceramic composite material with the uniformly-distributed carbon nano-fiber can be prepared. As the growing of the carbon nano-fiber is completed by one step in the