Ultralight-weight sol-gel bonded corundum ceramics

The possibility of making a thermostable corundum ceramic material of ultralight-weight, low shrinkage, high strength at high temperatures, and low thermal conductivity was demonstrated. The transformations occurring in mixtures of corundum microgranules and modified ethyl silicate bonding agents were investigated and the structure of the resulting material was examined. Translated from Steklo i Keramika, No. 5, pp. 15–18, May, 1997.