Aluminium Nitride (AlN)

Aluminium Nitride is specifically of interest for its very high thermal conductivity in combination with its effective electrical insulation.

It can be produced by dry press and sinter or by hot pressing with appropriate sintering aids. The material suffers surface oxidation above 700°C. Applications are principally in the electronics area where heat removal is important.

Typical Aluminium Nitride characteristics include:
Very good thermal conductivity
Thermal expansion coefficient similar to that of Silicon
Good dielectric properties
Good corrosion resistance
Stability in semiconductor processing atmospheres

Typical Aluminium Nitride applications include:
Heat sinks
Electronic substrates
IC packages
Power transistor bases
Microwave device packages