Application of aluminum nitride ceramic materials

What exactly is aluminum Nitride?


Aluminum nitride

This atomic crystal is a diamond-like nitride. It belongs to the hexagonal crystal structure and the wurtzite-type crystal structure. Aluminium nitride has a high thermal shock value.

The miniaturization and advancement of integrated circuits, electronic systems and products are developing toward high integration densities and high functionality for the semiconductor industry. Electronic parts have increasingly stringent requirements regarding the substrate that they are attached to. The breakthrough of high thermal conductivity in circuit integration and miniaturization has made it possible to use the substrates from alumina ceramics. Aluminium nitride is gradually becoming the preferred choice in packaging materials due to its excellent chemical and physical properties.

Attenuation material for microwaves made of aluminum nitride

Microwave attenuation has been applied to many areas of everyday life. This includes human body safety protection and radar detection. It essentially converts microwave energy into heat energy by the physical mechanism called polarization. The material also exchanges the heat energy with the environment. These techniques are increasingly being used to make high-power microwave vacuum devices.

AlN exhibits a very low dielectric loss. AlN is suitable for use as a microwave absorber material. To make Al N-based microwave ceramics, it’s often combined with metals or ceramics of good thermal and electrical conductivity. Current research involves carbon nanotubes (TiB2, TiC), and metals such Mo, W, or Cu.

Aluminium nitride is a heat-resistant material

Aluminum nitride does not wet with aluminum, calcium and other metals. It can also be used to make casting molds, crucibles, protective tubes, casting moulds and so on. An aluminum nitride-ceramics can be used in an immersion thermocouple protective tube as a metal pool. You can use it continuously at 8001000 for over 3000 hours without it sticking to any molten metal. It will also not corrode because it doesn’t stick to any molten metal. destroy. Because aluminum nitride products are strong to molten sal gallium Arsenide and other substances, the crucible has been replaced by glass for gallium-arsenide semiconductor synthesis. This can eliminate all silicon pollution and produce high purity gallium arsenide.

The strength of aluminum nitride ceramics is very high at room temperature, and they are resistant to temperature fluctuations. They have low thermal expansion coefficients and high thermal conductivity. They are a good heat-resistant material as well as heat exchange materials. This material is expected to be used in heat exchangers for gas turbines. Materials that are heat-resistant and exchange heat

AlN ceramic materials offer broad applications prospects and wide potential markets in many industries, including electronics, electric power and locomotives.

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