Abstract:Such experimental researches as XRD, SEM and TEM were conducted on the synthesized ceramic heat-resistant gradient material of TiC-Mo/W system prepared by combining SHS with the new method of HP. The result of XRD shows that the reaction product is no other than TiC and Mo/W. TEM analysis finds that TiC ceramic particle becomes a ellipsoidal distribution, tiny and relatively even particle, with Mo/W metal phase in-between; SEM indicates that the shape of multi-metal phase appears to be island-like and distributes in continuous gradient clouds. The compacting density, bending strength, fracture toughness and rigidity value of the synthesis can be prepared to be applicable gradient material structure under suitable pressure and temperature. In the course of SHS/HP, Mo/W distributes into ceramics TiC in the manner of gradient clouds along the sample grade direction. According to the research, the characteristics of the material is anisotropic and transversally isotropic along the direction and vertical grade direction respectively.