The main uses of silicon carbide are divided into three parts: abrasive tools, refractory materials, and casting and smelting to replace ferrosilicon. It can be said that these three kinds of uses account for 90% of silicon carbide. Secondly, there are major applications in the semiconductor field and photovoltaic field. Next, Henan Sicheng silicon carbide manufacturer will introduce the main application fields of silicon carbide.
1. Abrasive tool abrasive
As an abrasive, silicon carbide can cut very fast because of its high hardness. It can also be used to clean or etch the surface of hard workpieces, which can not be completed by soft abrasive. Because silicon carbide has high hardness, chemical stability and certain toughness, silicon carbide can be used to manufacture consolidated abrasives, coated abrasives and free grinding, so as to process glass, ceramics, stone, cast iron and some non-ferrous metals, cemented carbide, titanium alloy, grinding wheel, etc.
2. Refractory material
Due to its high melting point, chemical inertness and thermal shock resistance, silicon carbide can be used in many kinds of silicon carbide ceramic products, such as shed plates and saggers used in furniture grinding and ceramic products firing kilns, silicon carbide bricks, aluminum electrolytic cell liners, crucibles, small pieces of furnace materials used in vertical cylinder distillation furnaces in zinc smelting industry. Silicon carbide refractory is a kind of high-quality refractory with high strength, high thermal conductivity, good seismic resistance, oxidation resistance, wear resistance, corrosion resistance and other excellent high-temperature properties.
3. Foundry industry
Silicon carbide is very important in the casting industry. Silicon carbide for casting can effectively improve the metallurgical quality of molten iron, so as to reduce the above problems. At present, the price of ferrosilicon in the market has soared, and the price of silicon carbide has basically not changed. In addition, the aluminum content in ferrosilicon is higher than that in silicon carbide, so it is also better to replace ferrosilicon with silicon carbide. Using silicon carbide (generally using low-quality silicon carbide) to replace ferrosilicon deoxidation can also save a lot of resources for enterprises.
4. Semiconductor field
Due to its micro morphology and crystal structure, silicon carbide one-dimensional nano materials have more unique excellent properties and wider application prospects. It is widely believed that it is expected to become an important component of the third generation broadband gap semiconductor materials. The third generation of semiconductor materials, namely wide band gap semiconductor materials, also known as high-temperature semiconductor materials, mainly include silicon carbide, gallium nitride, aluminum nitride, zinc oxide, diamond, etc.