What is a Aluminum nitride (AlN)?

Aluminum nitride (AlN) is a ceramic material known for its excellent combination of high thermal conductivity and electrical insulation. With a thermal conductivity of around 170 W/m·K, it significantly outperforms materials like silicon and alumina, making it ideal for applications requiring efficient heat dissipation, such as substrates for electronic circuits and LED packaging. Its high electrical resistivity also allows it to function as a thermal conductor while maintaining insulation, which is critical in high-power electronics. Additionally, aluminum nitride exhibits good chemical stability and is resistant to acids and organic solvents. It also offers strong mechanical properties and good machinability, making it suitable for use in precision components. While it can oxidize in the presence of oxygen at high temperatures, it remains stable in vacuum or inert gas environments. These properties have led to its widespread adoption in power semiconductors, microwave communication devices, and sensors. As technology advances, especially in 5G and electric vehicles (EVs), aluminum nitride is expected to play an increasingly vital role.

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