| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dielectric porcelain composition which makes it possible to obtain dense sinterability, has excellent dielectric characteristics in a high frequency (microwave) band and can be cofired with silver electrodes, etc., at temperature around 900 dgrees C. <P>SOLUTION: The composition is characterized by firing the material formed by adding x pts. wt. (10≤x≤17.5) glass containing GeO<SB>2</SB>and y pts. wt. (3.0≤y≤7.5) B<SB>2</SB>O<SB>3</SB>to 100 pts. wt. material essentially consisting of a composition expressed by a general formula αBaO-(1-α)TiO<SB>2</SB>(α is 0.171≤α≤0.240) by molar ratio. The glass is expressed by a composition formula=aGeO<SB>2</SB>-bBaO-cBi<SB>2</SB>O<SB>3</SB>, where a, b, and c are, by molar ratios, 0.4≤a≤0.6, 0.1≤b≤0.5, and 0.1≤c≤0.5, and are within a range of a+b+c=1 and the temperature for firing is below the melting point (=961.93°C) of Ag. <P>COPYRIGHT: (C)2004,JPO |
