Investigation of reaction synthesis of AIN-SiC solid solution

To understand the formation mechanism of the solid solution, experiments were carried out at different temperatures. X-ray diffraction (XRD) patterns of the synthesized products showed the presence of AlN, Si₃N₄, Si or C and Al, but no SiC was detected. The results indicate that silicon nitride should first react with aluminum producing AlN and Si subsequently Si and C directly diffuse into AlN forming a 2H-AlN-SiC solid solution.