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Aluminum nitride
It is a covalent compound with the chemical formula AIN. It is also an atomic-crystal. Aluminum nitride has a hexagonal system of crystals, wurtzite crystalline structure, is non-toxic and is a white or off-white dust.
Aluminum Nitride Powder Properties
Aluminum nitride, or AlN, has many characteristics, including high strength, volume resistivity, insulation withstand voltage and thermal expansion coefficient. Recently, it is used not just as a reinforcing or sintering phase for structural ceramics. Its performance in ceramic electronic substrates, packaging materials and other fields is superior to that of alumina.
Aluminum nitride, with its high thermal conductivity and low thermal expansion coefficient is an excellent thermal shock material. Aluminum nitride resists corrosion when molten and is a good crucible material to melt and cast pure iron, aluminum and aluminum alloys. Aluminum nitride also has excellent dielectric properties. It is also promising for electrical components.
Aluminum Nitride powder Applications
1. Aluminum nitride has a high purity, small particle sizes and high activity. It is the main raw materials for high thermal conductivity Aluminum Nitride Ceramic Substrates.
2. Aluminum nitride is a ceramic substrate with high thermal conductivity. It has a low expansion coefficient and high strength. It is a suitable large-scale heat dissipation material and packaging substrate for integrated circuits.
The hardness of aluminum nitride is much higher than traditional alumina.
4. Using the heat resistance of AIN Ceramics, melt erosion resistance and temperature shock resistance can be used to make GaAs Crystal Crucibles, magnetic fluid generation devices, high-temperature turbine parts, and infrared Windows.
5. Aluminum nitride can be made into super-large integrated-circuit substrates, high-frequency piezoelectric components and other products.
6. Aluminum nitride resists heat, resists corrosion by molten steel, is stable to acid but easily corroded when in an alkaline solution. When exposed to humidity, the AIN surface will form a thin film of oxide. AIN ceramics can be used to replace toxic ceramics made of beryllium and they are commonly used in electronics.
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