Application of boron carbide in nozzles

Application of boron carbide in nozzles
Boron carbide is used to make nozzles for sandblasting machines, nozzles for high-pressure water cutting machines, sealing rings, ceramic tools and molds, etc. Features: The boron carbide nozzle has the characteristics of wear resistance and high hardness and will gradually replace the known carbide (tungsten steel) and sandblasting nozzles made of silicon carbide, silicon nitride, alumina, zirconia and other materials. In addition, the application of boron carbide in the field of composite ceramics: boron carbide is a compound with strong covalent bonds, and the plasticity of boron carbide is very poor, and the grain boundary resistance is very large, making it difficult to obtain a dense sintered body, except for some special In some situations, such as microcrystalline boron carbide gas dynamic bearing materials and boron carbide blocks used as neutron absorbing materials in atomic energy reactors, sintering aids are usually added to improve the sintering behavior of boron carbide and obtain cheaper results. , practical boron carbide products. What is more noteworthy is that B4C-SiC composite ceramics can better maintain the excellent physical and mechanical properties of boron carbide ceramics while reducing the sintering conditions of boron carbide ceramics. B4C-SiC ceramic is considered to be a high-temperature corrosion-resistant and wear-resistant material with wide application prospects. It has been used in industrial nozzles, pump seals, hot extrusion dies and other fields.