Application of Boron Carbide in Engineering Ceramic Materials
Boron carbide production sandblasting machine nozzles, high-pressure water cutting machine nozzles, sealing rings, ceramic molds, etc. Characteristics: The boron carbide nozzle has the characteristics of wear resistance and high hardness, which will gradually replace the known hard alloy (tungsten steel) and sandblasting nozzles made of materials such as silicon carbide, silicon nitride, alumina, and zirconia. In addition, the application of boron carbide in the field of composite ceramics: boron carbide is a compound with strong covalent bond, and its plasticity is very poor, and the resistance of grain boundary is very high, so it is difficult to obtain dense sintered body. Except for some special occasions, such as microcrystalline boron carbide gas dynamic bearing material, boron carbide block used as neutron absorption material in the primary energy reactor, the sintering behavior of boron carbide is usually improved by adding sintering additives, Obtain cheaper and more practical boron carbide products. More noteworthy is that B4C-SiC composite ceramics can effectively maintain the excellent physical and mechanical properties of boron carbide ceramics while reducing the sintering conditions. B4C-SiC ceramics are considered a high-temperature corrosion-resistant and wear-resistant material with broad application prospects, and have been applied in industrial nozzles, pump seals, and hot extrusion molds.
In recent decades, due to the rapid development of science and technology, especially electronic technology, space technology, and computer technology, there is an urgent need for materials with special properties. Boron carbide has become an important member of the high-end ceramic family due to its many excellent properties. At present, many difficulties related to the preparation of boron carbide powder and the sintering of boron carbide ceramic materials have been easily solved. In the field of materials in the future, boron carbide will definitely occupy an important position with its excellent performance.