An influence of p-eucryptite glassceramics on the sintering ability, sintering mechanisms, and structure of alumina ceramics has been researched by methods of DTA, TG, DTG, XRD, dilatometry, optical and electronic microscopy. The thermal incompatibility between A l l 0 3 and p-eucryptite glassceramics that results fiom the difference between their thermal coefficients of expansion (TEC) has been overcome by use of superfine powders and thorough blending of the base mixture. A phase composition, microstructure, TEC, mechanical and electrical properties, and thermal-shock resistance of alumina ceramics containing p-eucryptite glassceramics have been determined.A possibility of replacing P-eucryptite glassceramics by the equivalent amount of Li~0.2Si02 containing glass or a mixture of Li2CO3 u SiOl powders has been demonstrated.

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