What is aluminum nitride powder? Aluminum nitridehas good thermal conductivity and a small coefficient of thermal expansion and 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, or aluminum alloy. Aluminum nitride is also an electrical insulator with good dielectric properties; it is also promising to be used as an electrical component. Aluminum nitride is used in optoelectronic engineering, including the optical storage interface, the electronic substrate as the inductive layer, and the wafer carrier under high thermal conductivity, As well as for military use. Ultrafine aluminum nitride powder is mainly used as a thermally conductive filler for polymer materials. It is a very good kind of high thermal conductive insulating filler. It has a wide application prospect in electronic adhesives, thermally conductive plastics.
Advantages of aluminum nitride ceramics Aluminum nitride ceramics have excellent properties such as high thermal conductivity, high strength, high resistivity, low density, low dielectric constant, non-toxic, and thermal expansion coefficient matching with Si. It will gradually replace the traditional high-power LED substrate material and become the most promising ceramic substrate. In general, LED luminous efficiency and service life will decline with the increase in junction temperature. When the junction temperature reaches 125 ℃, the LED may fail. To keep the junction temperature of LED at a lower temperature, it is necessary to use heat dissipation substrate materials with high thermal conductivity and low thermal resistance and a reasonable packaging process to reduce the overall packaging thermal resistance of LED. Aluminum nitride ceramics have excellent comprehensive performance, a theoretical thermal conductivity of 320W/(m), excellent thermal conductivity, reliable electrical insulation, low dielectric constant and loss, and non-toxic and thermal expansion coefficient matching with silicon.
Production method of aluminum nitride ceramic products There are two production methods for aluminum nitride ceramic products, namely, the reaction sintering method and the hot pressing sintering method. The reaction sintering method shapes the silicon powder or the mixture of silicon powder and silicon nitride powder according to the general production method of ceramic products. Then, in the nitriding furnace, pre-nitriding at 1150~1200 ℃, after obtaining a certain strength, mechanical processing can be carried out on the machine tool, and further nitriding at 1350~1450 ℃ for 18~36h until all become silicon nitride. The size of the product thus produced is accurate, and The volume is stable. The principle of hot pressing sintering is that silicon nitride powder and a small number of additives (such as MgO, Al2O3, MgF2, AlF3, or Fe2O3) are pressed and sintered under the pressure of more than 19.6MPa and the temperature of 1600~1700 ℃. Generally, the products produced by hot pressing sintering have higher density and better performance than those produced by reaction sintering. Because silicon nitride can form a strong combination with silicon carbide, aluminum oxide, thorium dioxide, boron nitride, etc., it can be used as a bonding material, Modified with different proportions.
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.
