| 摘要 |
PROBLEM TO BE SOLVED: To provide a relatively inexpensive porcelain composition which can be baked at a lower temperature than the melting point of Ag, does not diffuse Ag during baking, can simultaneously be baked together with the Ag, and exhibits electric characteristics comprising a suitably high dielectric constant of about 20-40, a high Q value and a small resonance frequency temperature coefficient which are desirable for dielectric porcelains for high frequency of several GHz or higher. SOLUTION: This dielectric porcelain composition comprises 100 pts.wt. of a main component of formula: BaO.(a-x-y)TiO2.xGeO2+ySiO2 4.0<=(a)<=4.6; 0.15<=(x)+(y)<=0.8; 0.2<=(x)/[(x)+(y)]}, and 0.5-2 pts.wt. (converted into CuO) of Cu, 0.5-4 pts.wt (converted into ZnO) of Zn and 0.3-2 pts.wt. (converted into B2O3) of B as sub-components, wherein the conversion amount of ZnO is not lower than the conversion amount of CuO. |
