Application of aluminum nitride ceramic materials

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What is aluminum nitride?


Aluminum nitride

This atomic crystal is a diamond-like Nitride, hexagonal crystal system, wurtzite crystal structure. It’s non-toxic and can be white or off-white. Aluminum nitride has a high thermal shock value.

The miniaturization and advancement of electronic products has led to electronic circuits and systems that are capable of high integration density and high functionality. Electronic parts have increasingly stringent requirements for their carrier substrate. The breakthrough in high thermal conductivity has been achieved through high integration and miniaturization. It is becoming increasingly difficult for traditional alumina ceramic sub-substrates to meet the requirements of the development. Aluminum nitride, which has excellent chemical and physical properties, has slowly become the most popular choice in packaging materials.

Attenuation material for microwaves made of aluminum nitride

Microwave attenuation research and applications have gradually reached beyond the military to everyday life. They are used for human safety, radar detection, waveguide and coaxial absorption components, as well as protection of the body and radar detection. It is a physical process that converts microwave energy into heat through polarization. Heat energy is then exchanged to the external environment via the material. This technique is being used more frequently in high-power microwave electric vacuum devices.

AlN has low dielectric losses. AlN is suitable for use as a microwave absorber material. To make Al N-based microwave attenuating clays, it is often combined with metals or ceramics having good electrical and/or thermal conductivity. Current research involves carbon nanotubes, TiB2, and TiC as conductive additives. Metals such Mo, W, Cu are also involved.

Aluminum nitride, heat-resistant material

Aluminum nitride does not wet with aluminum, calcium and other metals. This makes it ideal for use as a crucible or protective tube, casting mould, mold, etc. Aluminum nitride ceramics may be used in the protection tube for immersion thermocouple. It is able to be used in the molten pools at 8001000 for up to 3000 hours and it will not corrode. destroy. Because aluminum nitride materials can withstand molten salt gallium senide and other substances, the crucible is now replaced by glass to synthesize gallium-arsenide semiconductors. This allows for complete elimination of silicon pollution and high-purity Gallium arsenide.

Aluminum nitride clays are very strong at room temperatures and do not react to temperature changes. They have high thermal conductivity, low thermal expansion coefficients and a relatively high thermal conductivity. It is both a heat-resistant material as well as a heat exchange material. It can be used to heat exchangers in gas turbines. Materials that are heat resistant and heat exchange.

AlN ceramic materials are versatile and have many potential markets. They can be used in electronic, electric power, locomotives and aviation.

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