The aluminum nitride powder produced by Nanotrun has high purity, small particle size, uniform distribution, large specific surface area, high surface activity, low bulk density, excellent dispersibility, and injection molding properties and can be used in composite materials. The chemical formula is AlN, it has good compatibility with semiconductor silicon, good interface compatibility, and can improve the mechanical properties and thermal conductivity and dielectric properties of composite materials.
Aluminum Nitride Properties:
Aluminum nitride powder can be stable up to 2200 °C and has high strength at room temperature, and the strength decreases slowly with increasing temperature. It has good thermal conductivity and a small thermal expansion coefficient and is a good thermal shock resistant material. Aluminum nitride has a strong resistance to molten metal erosion and is an ideal crucible material for casting pure iron, aluminum, or aluminum alloy.
Aluminum nitride is also an electrical insulator with good dielectric properties and is promising as an electrical component. The aluminum nitride coating on the surface of gallium arsenide can protect it from ion implantation during annealing. Aluminum nitride is also a catalyst for the conversion of hexagonal boron nitride to cubic boron nitride.
Aluminum nitride powder can be produced by the reduction of aluminum oxide and carbon or by direct nitriding of aluminum metal. Aluminum nitride is a substance connected by covalent bonds. The powder has a hexagonal crystal structure and is the same shape as zinc sulfide and fiber zinc. The space group of this structure is P63mc. Industrial grade materials can only be manufactured by hot pressing and welding. The substance is very stable in an inert, high-temperature environment.
In the air, when the temperature is higher than 700 °C, oxidation will occur on the surface of the substance. At room temperature, 5-10 nm thick oxide films can still be detected on the surface of the material. Up to 1370 °C, oxide films can still protect substances. However, when the temperature is higher than 1370 °C, a large amount of oxidation occurs. Up to 980 °C, aluminum nitride is still quite stable in hydrogen and carbon dioxide.
Aluminum nitride AlN ceramic:
1. Aluminum nitride powder has high purity, small particle size, and high activity. It is the main raw material for manufacturing aluminum nitride ceramic substrates with high thermal conductivity.
2. Aluminum nitride ceramic substrate has high thermal conductivity, low expansion coefficient, high strength, high-temperature resistance, chemical resistance, high resistivity, and small dielectric loss. It is an ideal large-scale integrated circuit heat sink substrate and packaging material.
3. Aluminum nitride has high hardness, surpassing traditional alumina, and it is a new type of wear-resistant ceramic material. Still, due to its high cost, it can only be used in areas with severe wear.
4. Using AIN ceramics' heat resistance and melt erosion resistance and thermal shock resistance, GaAs crystal crucibles, Al vaporizers, magnetic fluid power generation devices, and high-temperature turbine corrosion-resistant components can be produced. Its optical properties can be used as infrared windows. Aluminum nitride films can be made into high-frequency piezoelectric elements, ultra-large-scale integrated circuit substrates.
5. Aluminum nitride is heat-resistant and resistant to the erosion of the molten metal. It is stable to acids but easily eroded in alkaline solutions. When exposed to humid air, the newly formed AIN surface will react to form an extremely thin oxide film. Utilizing this characteristic, it can be used as a crucible and firing mold material for melting metals such as aluminum, copper, silver, and lead. AIN ceramics have better metallization properties and can be used in the electronics industry to replace toxic beryllium oxide ceramics.
Due to its excellent thermal, electrical, and mechanical properties, aluminum nitride ceramics have attracted widespread attention from researchers at home and abroad. With the rapid development of modern science and technology, higher requirements have been placed on the properties of the materials used. Aluminum nitride ceramics will also be more widely used in many fields.
Nanotrun is committed to providing comprehensive products, services, and solutions for advanced materials research, serving the scientific research and production activities of universities, research institutes, and enterprises in China. Nanotrun's product line covers many industrial fields， such as metal materials, ceramic materials, nanomaterials, rare earth materials, crystal materials, coating materials, sputtering targets, etc. It is widely used in metallurgy, petroleum, chemical, electronics, machinery, automobiles, power stations, In the fields of environmental protection, aerospace, and aerospace, we help customers develop and produce innovative products with high added value.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional aluminum nitride manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality aluminum nitride, please feel free to contact us and send an inquiry.
