| 摘要 |
PURPOSE:To provide a nonreducing dielectric porcelain composition, nonreducible even by simultaneously burning with a base metal such as Ni in a neutral or an oxidizing atmosphere and having a high dielectric constant, small dielec tric loss and lone life under load at high temperatures. CONSTITUTION:A nonreducing dielectric porcelain composition is composed of a polycrystal solid solution consisting essentially of barium titanate. The composition formula of the aforementioned solid solution is expressed by the formula [{Ba(1-x)Cax}A.{Ti(1-y)Zry}B.O3+aM1+bM2+cM3]. In the composition formula, M1, M2 and M3 are added and contained within the following ranges. M1 is at least one of Mn and Cr compounds; M2 is a compound of Si and M3 is a compound of W. (a), (b) and (c) are (0.05<=a<=1.0), (0.05<=b<=1.0) and (0.05<=c<=1.0) expressed in terms of oxides [provided that (a), (b) and (c) are wt.% based on the aforementioned principal components]. |
