Silicon carbide in the aviation aeronautical field
Silicon carbide is made into silicon carbide fiber. Silicon carbide fiber is mainly used as high temperature resistant material and reinforcing material. The high temperature resistant material includes heat shielding material, high temperature resistant conveyor belt, filter cloth for filtering high temperature gas or molten metal, and the like. When used as a reinforcing material, it is often used in combination with carbon fiber or glass fiber to reinforce metal (such as aluminum) and ceramics, such as brake pads for engine jets, engine blades, landing gearboxes, and fuselage structural materials. It can be used as a sporting goods, and its chopped fibers can be used as high-temperature furnace materials.
Silicon carbide raw materials can be supplied in large quantities, but the application of nano-sized silicon carbide powders with extremely high technical content is unlikely to form economies of scale in a short period of time. The research and development of silicon carbide wafers in China is still in its infancy, and the application of silicon carbide wafers is less in China. The development of silicon carbide materials industry lacks the support of downstream application enterprises. Close cooperation on personnel training and technology research and development; strengthen exchanges between enterprises, especially actively participate in international exchange activities, improve the level of enterprise development; pay attention to corporate brand building, and strive to build the company's fist products.
The global market for semi-insulating silicon carbide wafer materials. The semi-insulating substrate has high resistance and can withstand higher frequencies, so it has a wide application space in 5G communication and a new generation of intelligent interconnection and sensing sensing devices. Current mainstream semi-insulating substrates are based on 4 inches. In 2017, the market demand for semi-insulating substrates worldwide is about 40,000 pieces. It is estimated that by 2020, the market for 4-inch semi-insulating substrates will remain at 40,000, while the market for 6-inch semi-insulating substrates will rapidly increase to 4 to 50,000. From 2025 to 2030, 4-inch semi-insulating substrates will gradually withdraw. The market, while 6-inch wafers will grow to 200,000.
The international industrialization companies of silicon carbide single crystal substrate materials mainly include Cree, II-VI, Dow Corning, and German SiCrystal (acquired by Rohm Rohm of Japan), and their silicon carbide single crystals. The product covers 4 inches and 6 inches.
Domestic major silicon carbide single crystal substrate materials companies and R&D institutions have already possessed mature 4-inch zero-micro tube silicon carbide single crystal products, and have developed 6-inch single crystal samples, but in terms of crystal material quality and industrialization ability. There is a certain gap from the international advanced level.
