Process for manufacturing a ceramic body having multiple barium-titanate phases
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United States of America Patent
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Feb 6, 1990
Grant Date -
N/A
app pub date -
Jul 14, 1986
filing date -
Jul 14, 1986
priority date (Note) -
Expired
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Abstract
A ceramic includes a dielectric ceramic body that is made by mixing powders of two barium titanate compositions of widely disparate Curie temperature with a minor quantity of a borate flux and a sintering-inhibitor such as titania or bismuth oxide. A body is formed of this start powders mixture. Upon sintering to maturity at about 1100.degree. C., the capacitor body becomes only partially co-reacted and has a dielectric constant around 2000 that varies no more than about 15% over a board operating temperature range. These properties are not a strong function of sintering conditions leading to good control at manufacturing.
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