Powdered niobium, sintered body thereof, capacitor using the sintered body and production method of the capacitor
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United States of America Patent
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app pub date -
Nov 9, 2004
filing date -
Feb 16, 1999
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Abstract
The present invention relates to a powdered niobium for a capacitor, characterized in that the content of each of the elements such as iron, nickel, cobalt, silicon, sodium, potassium and magnesium is about 100 ppm by weight or less or that the total content thereof is about 350 ppm by weight or less is used, a sintered body thereof, a sintered body comprising niobium monoxide crystal and/or diniobium mononitride crystal, a capacitor using the sintered body and the production method of the capacitor. A capacitor using the above described niobium sintered body has a large capacity per the unit weight, a good specific leakage current value and excellent high temperature property.
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