LOW TEMPERATURE FIRED DIELECTRIC CERAMIC COMPOSITION WITH FLAT TC CHARACTERISTIC AND METHOD OF MAKING

摘要

Abstract:The invention provides a dielectric ceramic compositionsuitable for forming ceramic capacitors. The compositionconsists essentially of from about 91.6 to about 95.5weight percent barium titanate, from about 0.91 to about1.49 weight percent niobium pentoxide, from about 0.18 toabout 0.31 weight percent cobalt oxide, from about 1.04 toabout 1.87 weight percent bismuth trioxide, from about0.68 to about 1.23 weight percent titanium dioxide, fromabout 0.67 to about 1.20 weight percent lead oxide, fromabout 0.26 to about 0.46 weight percent boron oxide, fromabout 0.82 to about 1.49 weight percent zinc oxide, andfrom 0 to about 0.11 weight percent manganese dioxide.The composition has improved temperature characteristicswhen fired at a temperature not exceeding 1150°C.