Regularities of structure and phase formation at the synthesis of AlN‒Al2O 3‒Y 2O 3compositions in the combustion mode

The results of studies on the synthesis of AlN‒Al2O3‒Y2O3 compositions in the combustion mode in an industrial reactor are presented. The influence of synthesis temperature on the formation of microstructure, phase composition of compositions and oxygen content of impurities dissolved in the crystal lattice of aluminum nitride was studied. The optimal synthesis temperature is determined. Experimental batches of composite powders were produced for the production of dielectric ceramics with high thermal conductivity.