Non-reducible dielectric ceramic composition

Abstract

Abstract A non-reducible dielectric ceramic composition comprises of a basic composition expressed by the general formula: {(Ba.sub.1-x-y Sr.sub.x Ca.sub.y)O}.sub.m (Ti.sub.1-o-p Zr.sub.o Nb p )O 2+p/2 wherein 0.05≦x 0.30, 0.005≦y≦0.12, 0≦o≦0.20, 0.0005≦p≦0.012, and 1.002≦m≦1.03, or {(Ba.sub.1-x-y-z Sr.sub.x Ca.sub.y Mg.sub.z)O}.sub.m (Ti.sub.1-o-p Zr.sub.o Nb p )O 2+p/2 wherein 0.05≦x≦0.35, 0.005≦y 0.12, 0.0005 ≦z≦0.05, 0<o≦0.20, 0.0005≦p≦0.02, 1.000≦m≦1.04. The composition contains an additive (A) composed of one or more oxides selected from the group of MnO 2 , Fe 2 O 3 , Cr 2 O 3 , CoO and NiO in an amount of 0.02 to 2.0 moles per 100 moles of the basic composition. The composition further contains an additive (B) consisting of SiO 2 and/or ZnO in an amount of 0.1 to 2.0 moles per 100 moles of the basic composition, or an additive (B) composed of a glass composition of a BaO-SrO-Li 2 O-SiO 2 system in an amount of 0.05 to 5.0 parts by weight per 100 parts by weight of the basic composition.

Inventors

• 👤 Harunobu Sano
• 👤 Yukio Hamaji
• 👤 Yukio Sakabe

Bibliographic Details