Microstructure and phase transformations in the AlN–Al2O3 pseudo-binary system

The microstructure and phase transformations in the AlN–Al2O3 pseudo-binary system of samples having an AlN content in mol% ranging between 44 and about 0 are reported as a function of the thermal treatments. The nature of the phase equilibria, temperature and composition range and coherence degree of the different phases were studied by using various complementary experimental techniques.