Aluminum Nitride Powder Properties And Applications

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Aluminum nitride Aluminum nitride belongs to diamond-like nitride. It has a hexagonal crystal system and wurtzite structure. Aluminum nitride has a hexagonal system of crystals, wurtzite crystalline structure, is non-toxic and is white or offwhite powder.

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. Its performance in ceramic substrates, packaging materials and electronic substrates 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 can be used as an electrical component.

Aluminum Nitride powder Applications

1. Aluminum nitride has a high activity, high purity and small particle size. Aluminum nitride 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 low expansion coefficients, high strength and resistance to corrosion. It is the ideal material for packaging and heat dissipation of large-scale integrated systems.

The hardness of aluminum nitride is much higher than traditional alumina.

4. Using AIN ceramics’ heat resistance and melt erosion resistance, high-temperature turbine corrosion resistant parts, GaAs crucibles and magnetic fluid generation devices can be produced. The optical properties of aluminum nitride are also useful as infrared window.

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 easily in an alkaline solution. The new surface will react with humid air and 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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