| 摘要 |
PURPOSE:To provide an irreducible dielectric ceramic composition having high dielectric constant, small dielectric loss and long life under load at high temperatures and irreducible even by firing in a neutral or reducing atmosphere together with a base metal such as Ni. CONSTITUTION:The objective composition contains a polycrystalline solid solution expressed by the compositional formula {Ba(1-x) Cax}A. {Ti(1-y) Zry}B. O3+aM1+bM2+c(M3+m4) wherein M1 is at least one kind of Mn or Cr compound; M2 is Si compound; M3 is Y compound; M4 is Nb compound; a, b and c satisfy the formulas 0.05<=a<=1.0, 0.05<=b<=1.0 and 0.05<=c<=1.5 (wt.% based on ABO3 in terms of oxide); the maximum content of M3 is 1.0wt.%; the maximum content of M4 is 0.5wt.%; and x, y and A/B satisfy the relations 0<=x<=0.24, 0.08<=y<=0.22 and 1.000<=A/B<=1.040. |
