Aluminum nitride characteristics

 Overview of Aluminum Nitride

Aluminum nitride (AlN) is hexagonal, and pure AlN is blue-white, usually gray or off-white. Aluminum nitride ceramics have a series of excellent characteristics such as excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxic, and thermal expansion coefficient matching with silicon. It is a new ceramic material with excellent comprehensive performance.

Aluminum nitride characteristics

Aluminum nitride has the characteristics of not being corroded by molten aluminum, other molten metals and gallium arsenide, and especially has excellent corrosion resistance to molten aluminum.

(1) Aluminum nitride has high thermal conductivity (about 320W/m·K), which is close to BeO and SiC, and is more than 5 times that of Al2O3;

(2) The thermal expansion coefficient of aluminum nitride (4.5×10-6°C) matches that of Si (3.5-4×10-6°C) and GaAs (6×10-6°C);

(3) Various electrical properties (dielectric constant, dielectric loss, volume resistivity, dielectric strength) of aluminum nitride are excellent;

(4) Aluminum nitride has good mechanical properties, has higher bending strength than Al2O3 and BeO ceramics, and can be sintered under normal pressure;

(5) Aluminum nitride has good optical transmission characteristics;

Application of Aluminum Nitride

1. Aluminum nitride powder has high purity, small particle size and high activity. It is the main raw material for manufacturing high thermal conductivity aluminum nitride ceramic substrate.

2. Aluminum nitride ceramic substrate has high thermal conductivity, low expansion coefficient, high strength, high temperature resistance, chemical corrosion resistance, high resistivity, and low dielectric loss. It is an ideal large-scale integrated circuit heat dissipation substrate and packaging material.

3. Aluminum nitride has high hardness, higher than traditional alumina, and is a new type of wear-resistant ceramic material.

4. Utilizing the heat resistance, melt erosion resistance and thermal shock resistance of AlN ceramics, GaAs crystal crucibles, Al evaporating dishes, magnetic fluid power generation devices, high temperature turbines corrosion-resistant parts can be made, and its optical properties can be used as Infrared window. Aluminum nitride film can be made into high-frequency piezoelectric components, super-large-scale integrated circuit substrates, etc.

5. Aluminum nitride is heat-resistant, resistant to molten metal corrosion, stable to acid, but easily corroded in alkaline solutions. When exposed to humid air, the new surface of AIN will react, forming a very thin oxide film. Using this feature, it can be used as a crucible and mold material for smelting metals such as aluminum, copper, silver, and lead. AIN ceramics have good metallization properties, can replace toxic beryllium oxide ceramics, and are widely used in the electronics industry.

Aluminum nitride powder price

The price of aluminum nitride powder varies randomly with factors such as production costs, transportation costs, international conditions, exchange rates, and supply and demand in the aluminum nitride powder market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for aluminum nitride powder, please feel free to send an inquiry to get the latest price.

Aluminum Nitride Powder Supplier

As a global aluminum nitride powder supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (molybdenum disilicide, lanthanum nitride (LaN powder, calcium silicide, iron boride), high-purity targets, functional ceramics and structural devices, and provides OEM services.

Spherical Aluminum Nitride Properties
Other NamesSpherical Aluminium nitride, AlN granule
CAS No.24304-00-5
Compound FormulaAlN
Molecular Weight40.9882
AppearanceWhite to pale yellow powder
Melting Point2200 °C
Boiling Point2517 °C (dec.)
Density2.9 to 3.3 g/cm3
Solubility in H2ON/A
Electrical Resistivity10 to 12 10x Ω-m
Poisson's Ratio0.21 to 0.31
Specific Heat780 J/kg-K
Thermal Conductivity80 to 200 W/m-K
Thermal Expansion4.2 to 5.4 µm/m-K
Young's Modulus330 GPa
Exact Mass40.9846
Monoisotopic Mass40.9846
Spherical Aluminum Nitride Health & Safety Information
RemarksDanger
Hazard StatementsH314-H335
Hazard CodesXi
Risk Codes36/37/38
Safety Statements26-37/39
RTECS NumberN/A
Transport InformationN/A
WGK Germany3


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