| 摘要 |
PURPOSE:To obtain a dielectric porcelain compsn. for temp. compensation having <=100ppm/ deg.C absolute value of the temp. coefft. of the capacitance, >=2,500 Q and >=1X10<13>OMEGAcm specific resistance at 20 deg.C by sintering at a low temp. of <=1,050 deg.C in a neutral or reducing atmosphere without causing reduction. CONSTITUTION:A base within the range defined by a polygon A, B, C, D in the three-component diagram is prepd. In the diagram, X is the total content (pts.wt.) of barium oxide and strontium oxide when expressed in terms of (Ba1-aSra) O (where 0<a<=0.9), Y is the total content (pts.wt.) of zirconium oxide and aluminum oxide when expressed in terms of (ZrO2) 1-b (Al2O3) b (where 0<=b<=0.5), Z is the content (pts.wt.) of silicon oxide when expressed in terms of SiO2 and X+Y+Z=100. TiO2 and B2O3 as secondary components are added to the base by 0-10 pts. wt. and > 0-5 pts.wt., respectively, per 100 pts.wt. of the base to obtain a dielectric porcelain compsn. for temp. compnesation. |
