Aluminum nitride ceramic circuit boardAmong a series of important properties of aluminum nitride, the most significant is high thermal conductivity. Its main mechanism is: through lattice or lattice vibration, that is, through lattice wave or thermal wave transmission. Aluminum nitride ceramics are insulating ceramic materials. For insulating ceramic materials, heat energy is transmitted by atomic vibration, which belongs to phonon heat conduction, and phonons play an important role in its heat conduction process.