The invention discloses a method for preparing texturing
boride super-high-temperature
ceramic. The method for preparing the texturing
boride super-high-temperature
ceramic comprises the steps that IVB group
metal simple substance,
amorphous boron powder, silica
powder, and
transition metal are adopted as raw materials, and complex-phase
powder containing
boride seed crystal and
silicide particles is prepared; and
slurry is prepared by mixing the complex-phase powder and boride
ceramic powder, a ceramic body is prepared by means of the
casting process technology or high-intensity
magnetic field orientation process technology, and then hot pressed
sintering is carried out on the ceramic body. According to the method for preparing the texturing boride super-high-temperature ceramic, the boride
seed crystal is enabled to grow in the ceramic body in a orientation-arrangement mode due to the preparation of boride
seed crystal with anisotropic
microstructure and the adoption of the
casting process technology or high-intensity
magnetic field orientation process technology for preparation of the ceramic body, and then the texturing boride super-high-temperature ceramic with
anisotropic crystal particle morphology is prepared. According to the ceramic prepared with the method,
relative density is more than 98%, material Lotgering orientation factor f (001) can reach to 0.95, and obvious anisotropism can be represented by each performance.