CERAMIC MATERIAL MIXTURE FOR HIGH-FREQUENCY TEMPERATURE-COMPENSATING MATERIALS AND METHOD OF PRODUCTION OF MATERIAL FROM IT Russian patent published in 1997 - IPC

FIELD: production of ceramic materials for high-frequency temperature-compensating capacitors. SUBSTANCE: the mixture includes CaTiO3, SrTiO3, MnCO3, Nb2O5, ZnO and H3BO3, and the method is based on production of mixture by mixing of source components, moulding of blanks from them and their burning; prior to mixing the mixture components, ZnO and H3BO3 are subjected to hydrothermal treatment by their mixing in aqueous medium at a temperature of 80 to 100 C with subsequent dewatering to the free-flowing state; after hydrothermal treatment they are mixed with the other components of the mixture, calcinated at 750 to 850 C, and mixed once again. EFFECT: reduced sintering temperature, enhanced electric strength and reduced labour content and power consumption. 2 cl, 2 tbl