| 摘要 |
PURPOSE:To obtain the title ceramic composition having high dielectric constant and insulation resistance and capable of being sintered at low temp. by substituting a part of the Pb having the composition within the region obtained by connecting the specified points in a ternary phase diagram with the apexes corresponding to the respective components in a specified ceramic composition for Ca. CONSTITUTION:A part of the Pb having the composition within the region obtained by connecting the following points in the ternary phase diagram with the apexes corresponding to the respective components in the ceramic composition shown by the formula is substituted for 2-30mol.% Ca to obtain a ceramic composition. The points are shown by (a) (x=0.60, y=0.39, and z=0.01), (b) (x=0.60, y=0.05, and z=0.35), (c) (x=0.45, y=0.05, and z=0.50), (d) (x=0.01, y=0.49, and z=0.50), (e) (x=0.01, y=0.85, and z=0.14), and (f) (x=0.14, y=0.85, and z=0.01). In addition, <=1.0mol.% of at least one kind, expressed in terms of Mn, Co, NiO, and Cr2O3, can be incorporated, as required. |
