Abstract
The sintering reaction of sialon composite containing Y-α'-sialon and β'-sialon has been investigated in the system Si3N4-Y2O3-AlN. It is revealed that Y-α'-sialon with higher solubility is formed by the reaction between AIN and liquid phase at lower temperatures, and that Y-α '-sialon with lower solubility is formed by the reaction between Y-α'-sialon with higher solubility and the remaining Si3N4 at higher temperatures. Y2SiO5 and YAM (2Y2O3⋅Al2O3) were formed as intermediate compounds.
