METHOD OF PRODUCTION OF ARTICLES FROM SINTERED GLASS CRYSTALLINE MATERIAL OF LITHIUM-ALUMO- SILICATE COMPOSITION Russian patent published in 2004 - IPC

FIELD: production of parts for radio engineering; ceramic industry and aeronautical engineering. SUBSTANCE: proposed method is based on use of crystallized glass or rejected heat treated articles and support of lithium-alumo-silicate composition. Initial material is ground by wet method and blanks of any shape are molded which are repeatedly processed into slip at density of 1.97-2.05 g/cu cm and degree of grinding at residue on sieve of 0.063 mm of 9-15% and pH=7.5-9.0. Articles molded from this slip are subjected to heat treatment at 1210-1250 C continued for 1-3 h at rate of rising and lowering temperature not exceeding 500 C/h. EFFECT: extended range of properties of articles by porosity and dielectric permittivity; reduced duration of molding blanks and roasting time; complete use of raw materials. 4 tbl