| 摘要 |
PURPOSE:To contrive improvement in the mass-productivity, the dielectric constant and the temperature characteristics of the title porcelain composition by a method wherein a specific quantity of MnO2 and SiO2 is contained in a barium titanate composition. CONSTITUTION:High purity BaTiO3, Y2O3, TiO2, ZrO2 and MnO2 and SiO2 (their purity is 99.9% or above) of reagent are used. Besides, 0-2.0wt.% MnO2 and 0-1.0wt.% SiO2 are contained against the composition consisting of 84.3-96.5mol%, BaTiO3, Y2O3 of 1.0-3.7mol% Y2O3, and at least one of TiO2 and ZrO2 of 2.5-14.0mol%. As a result, a porcelain composition having excellent mass-productivity, dielectric constant and temperature characteristics can be obtained. |
