Aluminum Nitride

Aluminum Nitride Ceramic Plate is a high-performance ceramic component known for its outstanding thermal conductivity, electrical insulation, and thermal stability. Aluminum nitride ceramic plates are widely used in applications that demand effective heat dissipation and electrical insulation, especially in electronics and high-power devices. AlN ceramic plates are precision-manufactured to provide consistent, reliable thermal management in compact, high-performance electronic setups.

Composition and Structure:

Aluminum Nitride (AlN): Composed of aluminum and nitrogen atoms, AlN has a covalent crystal structure that gives it high thermal conductivity and strong dielectric properties.

Dense, Non-Porous Surface: Aluminum nitride ceramic plates are manufactured to have a dense, smooth surface with minimal porosity, enhancing their mechanical strength and thermal efficiency.

Physical Properties:

High Thermal Conductivity: AlN has one of the highest thermal conductivities of any ceramic material, typically around 170-200 W/m·K, making it ideal for heat dissipation.

Excellent Electrical Insulation: AlN offers high dielectric strength and low dielectric loss, allowing it to function effectively as an insulator, even in high-voltage and high-frequency applications.

Mechanical Strength and Rigidity: Aluminum nitride ceramic plates are hard and mechanically stable, providing good structural support in various applications.

Thermal and Chemical Properties:

Thermal Stability: AlN is stable up to high temperatures (up to approximately 1000°C in air) and can withstand thermal cycling without significant degradation, making it suitable for high-temperature applications.

Chemical Resistance: AlN is generally resistant to many chemicals and solvents, although it can react with moisture over time. A thin protective oxide layer may form on the surface when exposed to air, but this does not impact performance in most applications.

Applications:

Electronic Substrates: Aluminum nitride ceramic plates serve as substrates for electronic circuits, LEDs, and other high-power electronic components, providing effective thermal management and electrical insulation.

Heat Spreaders and Heat Sinks: The high thermal conductivity of AlN allows it to be used as a heat spreader or sink in devices that generate significant heat, such as transistors, MOSFETs, and thyristors.

Power Electronics and RF Devices: AlN’s insulating and thermal properties make it suitable for power electronics and radio-frequency (RF) components, where managing heat and preventing electrical interference are crucial.

Laser and LED Modules: In laser diodes and LED modules, AlN plates help dissipate heat efficiently, extending device life and maintaining performance stability.

Handling and Storage:

Fragility: Despite their mechanical strength, Aluminum nitride ceramic plates can be brittle, so careful handling is recommended to avoid cracks or chips.

Moisture Sensitivity: Although stable in dry environments, Aluminum nitride ceramic plates should ideally be stored in low-humidity conditions to prevent surface reactions, especially for extended storage.