Aluminum nitride (AlN) ceramics offer high thermal conductivity (170-200 W/(m·K)), significantly surpassing common ceramics like alumina (20 W/(m·K)) and even metals like copper and aluminum. This allows efficient heat dissipation, improving reliability and lifespan in high-power applications.
AlN also provides excellent electrical insulation, with a resistivity of 10¹⁴ Ω·cm and a breakdown voltage up to 15 kV/mm, making it ideal for high-voltage and high-frequency environments. Its high mechanical strength (12 GPa hardness, 308 GPa Young’s modulus) ensures resistance to impact and wear.
Additionally, AlN ceramics are chemically stable, corrosion-resistant, and offer electromagnetic shielding, reducing external interference and improving electromagnetic compatibility.
Aluminum Nitride (AlN) is a high-performance ceramic known for its exceptional thermal conductivity, electrical insulation, and chemical stability, making it ideal for advanced engineering and electronic applications.
Electronics & Semiconductors – Used as substrates and packaging materials for high-power devices, transistors, and ICs, providing efficient heat dissipation and excellent electrical insulation.
LED Technology – Serves as a substrate for GaN-based LEDs, especially UV LEDs for sterilization, water treatment, and medical diagnostics.
Thermal Management – Applied in heat sinks, spreaders, and cooling components for CPUs, lasers, and power electronics to maintain optimal operating temperatures.
RF & Microwave Components – Low dielectric loss makes it suitable for antennas, isolators, and circulators, improving communication system performance.
Aerospace & Defense – Stable under extreme temperatures for use in sensors, electronic warfare systems, and engine components.
Industrial Equipment – Used in crucibles, thermocouple sheaths, and semiconductor manufacturing parts requiring high temperature resistance.
Automotive – Integrated into sensors and electronics for effective heat dissipation in demanding vehicle environments.
Chemical Formula | AlN |
---|---|
Mechanical | |
Density | 3.3 g/cm3 |
Hardness | 10.4 GPa |
Modulus of Elasticity | 320 GPa |
Flexural Strength | 382 MPa |
Compressive Strength | 1.5 GPa |
Poisson’s Ratio | 0.21 |
Fracture Toughness | 2-3 MPa m½ |
Electrical | |
Dielectric Strength | 15 ac V/mm |
Dielectric Constant | 8.56 (@ 1 MHz) |
Volume Resistivity | 1.4*10^14 ohm-cm |
Thermal | |
Coefficient of Thermal Expansion | 4*10-6 x 10^-6/°C |
Thermal Conductivity | 170 W/(m*K) |
Specific Heat | 0.72 x10^3 J/(Kg*K) |
Shock Resistance | – |
Maximum Working Temperature | 900 °C |
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