Making low-porosity materials with improved thermal resistance on the basis of corundum with added ZrO2, Si3N4, AlN, and SiO2

Added ZrO₂, Si₃N₄, AlN, and SiO₂ affect the consolidation of aluminum oxide on sintering in nitrogen, vacuum, and air, as well as affecting the thermal resistance of the materials. The relative density of material based on Al₂O₃ is largely dependent on the type and amount of additive, the component ratio, and the sintering medium. High density and thermal stability occur in materials formed by sintering in nitrogen from aluminum oxide containing ZrO₂, Si₃N₄ and SiO₂. Materials Science Institute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 3-4(400), pp. 48–52, March–April, 1998.