What is silicon carbide

                                                                                     Definitions of Silicon carbide
Silicon carbide is composed of silicon dioxide clusters and carbon elements sealed on the surface. It has excellent physical, semiconductor, chemical and appearance characteristics, such as high strength, high temperature, high corrosion resistance, high thermal stability and high specific surface area.
The thermal property of silicon carbide is one of the most important characteristics in plasma physics. It has high thermal stability, low thermal diffusivity and high thermal resistance. These characteristics show that silicon carbide is a very favorable thermal insulation material, which can be used to manufacture thermal management systems in electronic fields such as high-temperature welding materials, electronic components and solar arrays.
Silicon carbide has excellent electromagnetic properties. On the one hand, it has a very high waveguide scattering rate in the 20 MHz to 20 GHz frequency band, which greatly reduces the risk of electromagnetic interference to the components; On the other hand, it has extremely high magnetic suppression rate and attenuation rate, which can effectively reduce the propagation of electromagnetic waves to the radiation field without electromagnetic shielding.

Corundum, also known as silicon carbide (SiC), is made by smelting quartz sand, petroleum coke (or coal coke), sawdust (salt is needed to produce green silicon carbide) and other raw materials through resistance furnace at high temperature. Silicon carbide also exists in nature as a rare mineral, morimorimorite. Silicon carbide is also called carborundum. Silicon carbide is the most widely used and most economical non-oxide high-tech refractory raw materials such as C, N and B, which can be referred to as carborundum or refractory sand.
Silicon carbide is a kind of carbide accidentally discovered by American Acheson in the laboratory during the electrofusion diamond experiment in 1891. At that time, it was mistaken for a mixture of diamond, so it was named emery. In 1893, Acheson developed a method of industrial smelting silicon carbide, which is also known as Acheson furnace, which has been used to this day, using carbon materials as the furnace core, Electrify and heat the mixture of quartz SIO2 and carbon to generate silicon carbide.