Composite tantalum powder and process for preparing the same and capacitor anode prepared from the tantalum powder
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United States of America Patent
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Aug 11, 2020
Grant Date -
Aug 17, 2017
app pub date -
Aug 20, 2014
filing date -
Aug 20, 2014
priority date (Note) -
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Abstract
The present invention relates to a composite tantalum powder and a process for preparing the same, and to a capacitor anode prepared from the tantalum powder. The method for preparing a composite tantalum powder comprises the following steps of: 1) providing a tantalum powder prepared by a reduction process, and flattening the tantalum powder so as to prepare a flaked tantalum powder; 2) providing a granular tantalum powder prepared from tantalum ingot; 3) mixing the flaked tantalum powder and the granular tantalum powder to give a tantalum powder mixture; and 4) thermally treating the tantalum powder mixture, and then pulverizing, screening to give a composite tantalum powder. The present invention further relates to a composite tantalum powder prepared from the process and the use thereof in a capacitor.
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