What is silicon carbide?
June 1, 2023
Silicon carbide (SiC) is the third generation compound semiconductor material. Chips are the cornerstone of the semiconductor industry, and the core materials for making chips are divided into: first-generation semiconductor materials (mostly high-purity silicon, which is widely used at present), second-generation compound semiconductor materials (gallium arsenide, indium phosphide), and third-generation compound semiconductor materials (silicon carbide, gallium nitride).
Silicon carbide because of its superior physical properties: high band-gap width (corresponding to high breakdown electric field and high power density), high conductivity, high thermal conductivity, will be the most widely used in the future to make semiconductor chip basic material.
In addition, silicon carbide is a new type of non-metallic material, with excellent physical properties and chemical stability, can still maintain structural stability at very high temperature. It has the advantages of high heat resistance, high corrosion resistance and high electric conductivity, and is used for lubricating oil and power system structural parts and noise elimination.
The role of silicon carbide is: first, it can effectively reduce friction, help to improve the vehicle's traction and engine efficiency, thereby improving the acceleration of the vehicle and the overall performance; Secondly, it can effectively reduce engine noise, improve the wear resistance of metal parts, reduce the consumption of lubricating oil; In addition, silicon carbide also has a certain fire protection effect, can reduce the degree of damage to the vehicle when the fire breaks out.
Silicon carbide has an important influence on new energy vehicles. First of all, it can improve the engine efficiency of new energy vehicles and help new energy vehicles obtain higher fuel economy; Secondly, it can extend the service life of new energy vehicles, and reduce the damage rate of parts; Finally, it also helps new-energy vehicles to provide a quieter operating environment and reduce noise emissions, thus improving the driving environment.