| 摘要 |
PURPOSE:To produce raw material powder capable of providing a dielectric porcelain having a high dielectric constant and insulation resistance and a low dielectric loss at a low cost. CONSTITUTION:The raw material powder for a relaxation type ferroelectric porcelain composition expressed by the general formula Pb(Me1/3Nb2/3)O3-PbTiO3 (Me is at least one bivalent metallic element selected from the group consisting of Mg, Ni, Zn and Co) is produced. In the process, carbonate ions are made to react with a mixture solution containing at least one bivalent metallic ion other than niobium, lead and titanium to produce a carbonate or complex carbonate and its mixture with hydroxide of niobium or a salt of an organic acid thereof is prepared and then calcined at 700-1000 deg.C to form a columbite compound or a complex columbite compound. A mixture thereof with a lead compound or a titanium compound is prepared and subsequently calcined at 600-1000 deg.C. |
