Why aluminum nitride substrate has extremely high thermal conductivity?
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Author : Lzh
Update time : 2023-02-06 13:52:30
What is aluminum nitride powder? Aluminum nitridewith good thermal conductivity and a low coefficient of thermal expansion. It is a good heat-resistant impact material. It has strong resistance to molten metal erosion and is an ideal crucible material for melting and casting pure iron, aluminum. Aluminum nitride is also an electrical insulator with good dielectric properties. It also has a good application prospect in electrical component manufacturing. .
Use of aluminum nitride powder 1. Manufacturing high-performance ceramic devices: manufacturing integrated circuit substrates, electronic devices, optical devices, radiators, high-temperature crucibles 2. Preparation of metal matrix and polymer matrix composites, especially in high-temperature sealing adhesives and electronic packaging materials, has excellent application prospects 3. Nano inorganic ceramic vehicle lubricating oil and anti-wear agent: The nano aluminum nitride ceramic particles in the nano ceramic oil act on the metal surface of the friction pair inside the engine with the lubricating oil, are activated under the action of high temperature and extreme pressure, and are firmly embedded in the dents and micropores on the metal surface, repair the damaged surface, and form the nano ceramic protective film. Because of the isolation effect of this film, the friction force is greatly reduced, Reducing the friction between moving parts to almost zero. Although the nano-aluminum nitride powder is expensive, the amount added to the lubricating oil is only 2/10000, and the cost performance is still very high.
Preparation of aluminum nitride powder 1. Aluminum nitride powder is prepared by directly nitriding ammonia and aluminum, crushing and grading, or aluminum nitride powder is prepared by fully mixing aluminum oxide and carbon and reducing in an electric furnace at 1700 ℃ 2. After degreasing the high-purity aluminum powder (extracted with ether or heated to 150 ℃ in the nitrogen stream), put it in a nickel plate, put it in a quartz or porcelain reaction tube, and slowly heat it in the purified nitrogen stream. The nitridation reaction will be carried out rapidly with white light at about 820 ℃. At this time, a large amount of nitrogen must be injected to prevent pressure reduction in the reaction tube. After the intense reaction is completed, cool it in the nitrogen stream. Because the product is covered with metal aluminum, it can be crushed; in addition, the aluminum nitride is vaporized and vaporized at 1200~1400 ℃ in the nitrogen stream to react with nitrogen to obtain aluminum nitride whiskers (metal whiskers). In addition, there is also a thermal decomposition method of AlCl3 · NH3 adducts.
Price of aluminum nitride powder Aluminum nitride powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of aluminum nitride powder. A large amount of large amount will be lower. The price of aluminum nitride powder can be found on our company's official website.
Aluminum nitride powder supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including aluminum nitride powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective aluminum nitride powder, you are welcome tocontact usor inquire at any time.
