1 results about "Boundary structure" patented technology

The application discloses a preparation method of eutectoid-like oxide ceramic based on an amorphous crystallization process, which comprises the steps of preparing amorphous powder with specific eutectoid components and crystallizing the amorphous powder. The amorphous powder is prepared by a sol-gel method of metal salt complexation reaction; and the amorphous powder is rapidly hot-pressed and sintered by a joule heat pressing method to crystallize the amorphous powder into a shape, so as to prepare the eutectoid-like oxide ceramic. The joule heat pressing makes the amorphous powder rapidly crystallize, and the crystallization temperature is far lower than the eutectoid temperature; the crystallized grains are mutually nested and wound to form eutectoid structures, and a plurality of grain boundaries formed in the crystallization process due to the particle boundaries of the amorphous powder also exist; the specific binary boundary structure has a strong toughening effect on the mechanical properties; therefore, the eutectoid-like oxide ceramic has excellent mechanical properties.