Development on High Thermal Conductive and Electric Insulative AlN Ceramics in Aerospace Devices

Aluminum nitrides are considered as high-performance thermal conductive substrate and packaging materials due to the remarkable properties, including high thermal conductivity, high electrical resistivity, low thermal expansion coefficient, low dielectric loss and excellent mechanical properties. This review represented the preparation techniques, properties and applications of AlN powders and ceramics. The challenges and implications for aerospace application were discussed. In addition, their potential applications for spacecraft electronics were also prospected.