| 摘要 |
PURPOSE:To miniaturize a dielectric porcelain composition material and increase its capacity by containing specific pts.wt. of Nb2O5 and MnO2 against a main component 100 pts.wt. with a specific mole ratio. CONSTITUTION:Nb2O5 0.3-3.0 pts.wt. and MnO2 0.05-0.25 pt.wt. are contained against a main component 100 pts.wt. with the mole ratio surrounded by points (a), (b), (c), (d) shown by the table I for (x), (Y), (z) expressed by the formula I, a high dielectric constant is obtained, and high dielectric breakdown voltage and high insulation resistance are obtained. The dielectric substance can be made thin in thickness because the crystal grain size is small, the dielectric porcelain composition material can be miniaturized, and its capacity can be increased. In the formula I, x+y+z=1.00. |
