Since silicon carbide has the characteristics of high high temperature strength, high hardness, high wear resistance, high corrosion resistance and special physical properties, it is widely used in ceramic materials, refractory materials and metal metallurgy. At the same time, silicon carbide ultrafine powder is also a good photovoltaic material, often used in the production of solar energy, semiconductor materials or new energy-saving materials.
(1) Building materials ceramic grinding wheel industry
Using the characteristics of high thermal conductivity and high thermal strength of silicon carbide to manufacture thin plate kiln furniture, it can not only reduce the capacity of kiln furniture, but also improve the kiln capacity and product quality, shorten the production cycle, and is an ideal indirect material for ceramic glaze baking and sintering. At the same time, silicon carbide ceramics made by adding silicon carbide are also ceramic products with better high temperature resistance.
(2) Nonferrous metal smelting field
Silicon carbide has high temperature resistance, high strength, good thermal conductivity and impact resistance, and is used as a high-temperature indirect heating material, such as hard pot distillation furnace, distillation furnace tray, aluminum electrolytic cell, copper melting furnace lining, arc plate for zinc powder furnace, thermocouple protection tube, etc.
(3) Application in the steel industry
Silicon carbide is used for the lining of large blast furnaces to increase its service life by taking advantage of its corrosion resistance, thermal shock resistance, wear resistance and good thermal conductivity.
(4) Application in the metallurgical mineral processing industry
Silicon carbide has a hardness second only to diamond and has strong wear resistance. It is an ideal material for wear-resistant pipes, impellers, pump chambers, cyclones and hopper linings. Its wear resistance is 5-20 times that of cast iron and rubber.
(5) Energy-saving materials
Silicon carbide is used in the manufacture of heat exchangers by taking advantage of its good thermal conductivity and thermal stability, which can reduce fuel consumption by 20% and save fuel by 35%. Silicon carbide new materials are also widely used in aerospace. my country's first Mars rover may be made of aluminum-based silicon carbide and other materials.
(6) Application in the semiconductor photovoltaic industry
Since silicon carbide has unique and excellent physical and electronic properties such as wide energy levels, high breakdown electric field, high thermal conductivity and high saturation electron migration speed, it has become the best material in the semiconductor field. For example: blue light-emitting diodes, ultraviolet detectors, high-voltage diodes, high-power microwaves, and various high-frequency devices that are resistant to high temperatures.