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Aluminum nitride belongs to diamond-like nitride. It has a hexagonal crystal system and wurtzite structure. Aluminum nitride has a hexagonal system and a wurtzite structure. It is nontoxic, white or off-white, and is made of a covalent bond compound.
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 phase or sintering agent for structural ceramics. It is superior to alumina when it comes to ceramic substrates, packaging materials and electronic substrates.
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 activity and is of high purity. 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. AIN ceramics have the ability to resist heat, melt erosion, thermal shock, and can be used to make GaAs crucibles. They can also be used for high-temperature turbine corrosion resistant parts, as well as magnetic fluid generation devices.
5. Aluminum nitride can be used as a substrate for super-large integrated electronic circuits, high-frequency components, etc.
6. Aluminum nitride resists heat, is resistant against corrosion caused by molten steel, and is stable with acid. It corrodes more easily in an alkaline solution. When exposed to humidity, the new 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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