Dielectric ceramic and multilayer ceramic substrate

Details Dielectric ceramic and multilayer ceramic substrate Dielectric ceramic and multilayer ceramic substrate

2007-03-13

2007-03-13

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S005000, C501S010000, C428S426000

Reexamination Certificate

active

11167431

ABSTRACT:
A dielectric ceramic obtained by firing a raw material comprising an alumina powder, a crystallizable glass powder mainly containing SiO2, CaO and MgO, and a noncrystallizable glass powder mainly containing SiO2, B2O3and Na2O. After the firing, the dielectric ceramic contains an alumina crystal phase, a diopside crystal phase (Ca(Mg, Al)(Si, Al)2O6) and a magnesia-spinel crystal phase (MgAl2O4) and has a porosity of not higher than 2.2% when measured by a mercury penetration method.

REFERENCES:
patent: 6120906 (2000-09-01), Terashi
patent: 6660670 (2003-12-01), Terashi et al.
patent: 6753277 (2004-06-01), Terashi
patent: 6946415 (2005-09-01), Chikagawa et al.
patent: 10-120436 (1998-05-01), None
patent: 11-012029 (1999-01-01), None

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