| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a dielectric porcelain composition which can be fired at 800-1,000°C and is small in variation or dispersion of properties caused by the variation in firing temperature, whose composition hardly changes when it is fired and from which a dielectric constant ε<SB>r</SB>of about 15-25 is obtained so that a laminated ceramic component, or the like, can be formed with an appropriate size; to provide a dielectric porcelain which has a low dielectric loss tanδ (i.e. a high Q value), and an absolute value of temperature coefficient τ<SB>f</SB>of resonance frequency of ≤50 ppm/°C; and to provide a method for manufacturing the same. <P>SOLUTION: The dielectric porcelain composition contains 3-30 pts.wt. of a glass component comprising, by weight, 50-75% ZnO and 5-30% B<SB>2</SB>O<SB>3</SB>to 100 parts by weight of a main component expressed by the formula: xZn<SB>2</SB>TiO<SB>4</SB>-yZnTiO<SB>3</SB>-zTiO<SB>2</SB>-wAl<SB>2</SB>O<SB>3</SB>(wherein (x), (y), (z) and (w) satisfy each 0.15<x<1.0, 0<y<0.85, 0≤z≤0.2, and 0<w≤0.2, with the proviso that x + y + z + w =1). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
