AIN - Aluminum Nitride

Aluminum Nitride (AlN) is a high-performance ceramic material composed of aluminum and nitrogen elements, with the chemical formula AlN. It combines excellent thermal conductivity and electrical insulation performance, and plays an important role in high-tech fields such as electronics and semiconductors.

Characteristic

Extremely high thermal conductivity

Excellent electrical insulation

Coefficient of thermal expansion matching that of Silicon

Good mechanical strength and high-temperature resistance

Chemical corrosion resistance

Parameter

Property Unit Value
Density g/cm³ 3.26
Mohs Hardness 7 – 8
Flexural Strength MPa 300 – 400
Melting Point °C >2200 (decomposes in N₂)
Maximum Service Temperature °C ~1350 (in air)
Thermal Conductivity (20°C) W/(m·K) 140 – 180
Coefficient of Thermal Expansion ×10⁻⁶/K 4.5 – 5.0
Volume Resistivity (20°C) Ω·cm >10¹⁴
Dielectric Strength kV/mm 15 – 20
Dielectric Constant (1MHz) 8.5 – 9.0

Application field solutions

High-power LED substrates, integrated circuit packaging substrates and heat sinks, semiconductor equipment components, laser diode heat sinks, high-temperature crucibles, electronic insulators, etc.

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