Method for manufacturing tungsten capacitor element
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United States of America Patent
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Apr 5, 2016
Grant Date -
Dec 24, 2015
app pub date -
Jun 19, 2015
filing date -
Jun 23, 2014
priority date (Note) -
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Abstract
A method for manufacturing a tungsten capacitor element, which includes: a sintering process for forming an anode body by sintering a tungsten powder or a molded body thereof, a chemical conversion process for forming a dielectric layer on the surface layer of the anode body, a process for forming a semiconductor layer on the dielectric layer, a post-chemical conversion process for repairing the defects generated on the dielectric layer, a non-aqueous electrolysis process for conducting electrolysis operation by immersing the anode body in a solution of a non-aqueous solvent containing an oxidizing agent, and a process of forming a conductor layer on the anode body, in this order.
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