CERAMIC MATERIAL USED FOR MANUFACTURE OF PREDOMINANTLY LOW-FREQUENCY CAPACITORS AND PROCESS FOR PRODUCING SAME Russian patent published in 1994 - IPC

FIELD: manufacture of ceramic material used for production of low-frequency capacitors. SUBSTANCE: this ceramic material includes BaTiO₃, CaZrO₃, ZnO, Nd₂O₃, Nb₂O₅, MnO₂ (or MnCO₃), CuO, Fe₂O₃, (or Ni₂O₃, Co₂O₃) and SnO₂. Method for producing disclosed ceramic material includes such steps as caking, preparation of charge, producing BaTiO₃ by roasting titanyloxalate at ratio of BaO/ TiO₂ of 0.99 to 1.005 at temperature of 1100 to 1120 C and producing CaZrO₃ by roasting charge at temperature of 1280 to 1320 C. EFFECT: net cost reduced two times, consumption of electric energy diminished 1.6 times, specific capacity raised 1.5 to 2 times and dielectric strength scaled up 2 to 2.5 times. 2 cl, 2 tbl