USE OF ADDITIVES FORMING LIQUID PHASE IN FIRING IN CORUNDUM CERAMICS TECHNOLOGY (A REVIEW)

摘要

Additives used in corundum ceramics technology, which form a liquid phase in firing, are classified. The main principles that should be taken into account in selecting additives to ensure production of high-quality aluminum oxide materials with a decreased sintering temperature are formulated. A series of eutectic systems is proposed, whose introduction in corundum makes it possible to obtain dense ceramic materials at a firing temperature of 1350-1550 deg C. Some sintering specifics of these materials are discussed.