Novel rod-like yttrium α-sialon crystalline powders prepared by combustion synthesis

Novel rod-like yttrium α-sialon crystalline powders were fabricated by combustion synthesis process. The experimental results show that the combustion temperature, the rate of the Si3N4 conversion, the nitrogen pressure and the composition of the additives prominently affect the phase formation and microstructures of the resulting α-sialon powders.