Low temperature-fired porcelain and electronic parts
AssigneeNGK Insulators, Ltd.
InventorTakeshi Oobuchi
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Abstract
The present invention provides a low temperature fired porcelain comprising crystalline phases including sanbornite, celsian and β-cristobalite phases when measured by a high power X-ray diffractometer. The ratio of the peak intensity of (101) plane of α-cristobalite phase to the peak intensity of (101) plane of sanbornite phase is not higher than 5%. The porcelain is of a low temperature fired porcelain of silica-alumina-barium oxide system with cristobalite phase precipitated, in which the incidence of cracks in the porcelain may be reduced.
Claims20
A low temperature-fired porcelain comprising crystalline phases including at least sanbornite phase, celsian phase and β-cristobalite phase, wherein said porcelain has a ratio of a peak intensity of (101) plane of α-cristobalite phase to a peak intensity of (101) plane of sanbornite phase of not higher than 5%, when measured by means of a high power X-ray diffractometer.
A low temperature-fired porcelain comprising a silicon component, an aluminum component and at least one of a barium component and a zinc component, wherein the sum of contents of said barium component and said zinc component is 46.0 to 56.0 weight percent when calculated as BaO and ZnO, the content of said silicon component is 39.0 to 47.0 weight percent when calculated as SiO2, and the content of said aluminum component is 0.5 to 10.0 weight percent when calculated as Al2O3.
Dependencies are inferred from the claim text.