Spinel type sialon, spinel type silicon oxynitride and methods for producing their powders

摘要

A high pressure phase spinel type sialon represented by the chemical formula Si6-xAlxOxN8-x (0<x<=4.2), and a high pressure phase spinel type silicon oxynitride represented by the chemical formula Si3+xO2xN4 (=Si3N4.xSiO2, 0<x<1). Methods for their production by instantaneous pressing by means of an impulse wave.