1Abrasive–Mainly because silicon carbide has high hardness, chemical stability and certain toughness, so silicon carbide can be used in the manufacture of consolidation abrasives, coated abrasives and free grinding, so as to process glass, ceramics, stone, cast iron and some non-ferrous metals, cemented carbide, titanium alloys, high-speed steel tools and grinding wheels.
2, refractory materials and corrosion-resistant materials—Mainly because silicon carbide has a high melting point (decomposition degree), chemical inertness and thermal vibration resistance, silicon carbide can be used in abrasives, ceramic products firing kiln with shed plate and box, zinc smelting industry vertical cylinder distillation furnace with silicon carbide bricks, aluminum electrolytic cell lining, crucibles, small furnace materials and other silicon carbide ceramic products.
3, chemical use–Because silicon carbide can decompose in molten steel and react with hot steel to separate oxygen and metal oxides to form carbon monoxide and silicon-containing slag. Therefore, it can be used as a smelting steel purifier, that is, as a steelmaking deoxidizer and cast iron structure improver. This generally uses low-purity silicon carbide to reduce costs. At the same time, it can also be used as a raw material for the manufacture of silicon tetrachloride.
4, electrician use–Used as heating elements, nonlinear resistance elements and high semiconductor materials. Heating elements such as silicon-carbon rods (suitable for1100～1500℃Work all kinds of electric furnaces), nonlinear resistance elements, various lightning protection valve plates.
5, other formulated into far-infrared radiation coating or made of silicon carbide silicon board with far-infrared radiation dryer.
- Body armor is also called bulletproof vest, bulletproof vest, bulletproof vest, bulletproof clothing, etc., individual protective body equipment. It is used to protect the human body from warheads or shrapnel. Body armor is mainly composed of two parts: a jacket and a bulletproof layer. Clothing covers are commonly made of chemical fiber fabrics. The bulletproof layer is made of metal (special steel, aluminum alloy, titanium alloy), ceramics (corundum, boron carbide, silicon carbide), FRP, nylon, Kevlar and other materials to form a single or composite protective structure. The bulletproof layer can absorb the kinetic energy of the warhead or shrapnel, and has obvious protective effect on the low-speed warhead or shrapnel, which can reduce the damage to the human chest and abdomen. Body armor includes infantry body armor, flight personnel body armor and artillery body armor.
because silicon carbide The hardness of is determined silicon carbide Application in body armor. Due to the addition of silicon carbide, the protective effect of body armor on warheads and shrapnel is more obvious, and the use of black silicon carbide and green silicon carbide in body armor is becoming more and more extensive.
Silicon carbide use segmentation ：
1, non-ferrous metal smelting industry application
The use of silicon carbide has high resistance, high strength and good thermal conductivity，Impact resistance, as high indirect heating materials, such as hard tank distillation furnace, rectification furnace tray, aluminum electrolytic cell, copper melting furnace lining, zinc powder furnace arc plate, thermocouple protection tube, etc.
2, steel industry applications
Using the characteristics of corrosion resistance, thermal shock resistance, wear resistance and good thermal conductivity of silicon carbide, it is used for large blast furnace lining to improve the service life.
3, the application of metallurgical beneficiation industry
Silicon carbide hardness is second only to diamond, has strong wear resistance, is wear-resistant pipelines, impellers, pump chambers, cyclones, mine hopper lining ideal materials, its wear resistance is cast iron, rubber service life5—20times, is also one of the ideal materials for aviation flight runways.
4, building materials ceramics, grinding wheel industry applications
Using its thermal conductivity, thermal radiation, high thermal strength characteristics, the manufacture of thin plate kiln furniture, not only can reduce the capacity of the kiln, but also improve the kiln capacity and product quality, shorten the production cycle, is the ceramic glaze baking sintering ideal indirect material.
