Capacitor and dielectric ceramic powder based upon a barium borate and zinc silicate dual-component sintering flux

摘要

Temperature compensating capacitors and dielectric ceramic powder compositions therefor are disclosed, based upon a dual-component barium borate and zinc silicate sintering flux. The precursor dielectric ceramic powders can include (1-m) BaTiO₃ + (m) CaZrO₃ (BTCZ composition), with m ranging from 20 mole percent to 35 mole percent, xBaO.yTiO₂.zRE₂O₃ (rare earth composition), (RE being a rare earth metal), with x ranging from 0m% to 30m%, y ranging from 45m% to 95m%, and z ranging from 5m% to 50m%, or a combination of the BTCZ and rare earth composition in varying weight percents. The effective range of B₂O₃ in the barium borate ranges from 0.029w% to 2.75w% of the total dielectric composition, whereas the effective range of SiO₂ in the zinc silicate ranges from 0.08w% to 1.42w% of the total dielectric composition.