DIELECTRIC CERAMIC-FORMING COMPOSITION AND DIELECTRIC CERAMIC MATERIAL
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United States of America Patent
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Issued Date -
Oct 25, 2012
app pub date -
Oct 15, 2010
filing date -
Oct 16, 2009
priority date (Note) -
Abandoned
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Abstract
A dielectric ceramic-forming composition comprising a perovskite (ABO3)-type ceramic raw material powder, and a glass powder containing, on an oxide basis, 35% by weight to 90% by weight of Bi2O3, 2.5% by weight to 20% by weight of ZnO, 1% by weight to 20% by weight of B2O3, 0.5% by weight to 15% by weight of SiO2, 0.5% by weight to 15% by weight of an alkali metal oxide, and 0.1% by weight to 35% by weight of an alkaline earth metal oxide, wherein 1% by weight to 15% by weight of the glass powder is blended with respect to the dielectric ceramic-forming composition, which can be fired at temperature lower than conventional temperature and can provide a dielectric ceramic material having high relative permittivity.
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