Silicon carbide is mainly reflected in which major fields?

May 13, 2022 / 446 views
Use in the field of semiconductors
Silicon carbide one-dimensional nanomaterials are generally considered to be an important component of the third-generation wide-bandgap semiconductor materials because of their own microscopic description and crystal structure, which give them more unique and excellent functions and wider application prospects.
The third generation of semiconductor materials is wide bandgap semiconductor materials, also known as high temperature semiconductor materials, mainly including silicon carbide, gallium nitride, aluminum nitride, zinc oxide, diamond, etc. This kind of material has the characteristics of wide band gap (greater than 2.2ev), high thermal conductivity, high breakdown electric field, high radiation resistance, high electron saturation rate, etc. It is suitable for high temperature and high frequency. , Radiation-resistant and high-power device manufacturing. With its excellent characteristics, the third-generation semiconductor materials have broad prospects for future use.
Use in the field of photovoltaics
The photovoltaic inverter is very important to the photovoltaic power generation effect, not only has the function of direct communication conversion, but also has the function of maximizing the function of the solar cell and the function of system fault maintenance. To sum up, there are automatic operation and shutdown function, maximum power tracking control function, anti-independent operation function (for grid-connected system), automatic voltage adjustment function (for grid-connected system), DC detection function (for grid-connected system), DC grounding detection Function (for grid-connected system), etc.
Domestic inverter manufacturers still use too little new technology and new devices. Inverters using silicon carbide as power devices have begun to be used in large quantities. Silicon carbide has very little internal resistance, which can make the power very high. The frequency can reach 10K, and it can also save the LC filter and bus capacitance. Silicon carbide materials may break in the use of photovoltaic inverters.
Use in aviation
Silicon carbide is manufactured into silicon carbide fiber. Silicon carbide fiber is mainly used as high temperature resistant material and reinforcing material. High temperature resistant material includes heat shielding material, high temperature resistant conveyor belt, filter cloth for filtering high temperature gas or molten metal, etc. When used as reinforcement material, it is often used in combination with carbon fiber or glass fiber, mainly reinforced metals (such as aluminum) and ceramics, such as brake pads, engine blades, landing gear boxes and fuselage structural materials of jet aircraft, etc. It can be used as sporting goods, and its chopped fibers can be used as high-temperature furnace materials.
There is a lot of supply of silicon carbide coarse material, but the use of nano-scale silicon carbide powder with extremely high technical content cannot form economies of scale in a short period of time. The development of silicon carbide wafers in my country is still in its infancy, and silicon carbide wafers are rarely used in China. The development of silicon carbide materials industry lacks the support of downstream users. Carry out close cooperation on talent training and skill development; strengthen communication between enterprises, especially actively participate in international communication activities to improve the level of enterprise development; attach importance to corporate brand building, and strive to build competitive products of the company.

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