Aluminum nitride (AlN) is a kind of diamond nitride inorganic non-metallic material, good thermal conductivity, low thermal expansion coefficient, is a good heat resistant impact material. Strong resistance to molten metal erosion, it 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, and has a good application prospect in the field of electrical component manufacturing. Ultrafine aluminum nitride powder is widely used in large-scale integrated circuit production.
Aluminum nitride powder is the raw material for preparing aluminum nitride ceramics. Its purity, particle size, oxygen content and other impurity content have an important effect on the thermal conductivity of the prepared aluminum nitride ceramics and the subsequent sintering and forming process. It is generally believed that in order to obtain AlN ceramic materials with excellent properties, it is necessary to prepare AlN powders with high purity, fine particle size, narrow particle size distribution and stable properties. Nanometer aluminum nitride powder can also be used with automotive lubricating oil to repair the friction surface, reduce the friction coefficient and improve the anti-wear ability of the friction surface.