Patent ID: 9312075
Filing Date: 2016-04-12
CPC Classification: B22F,H01G

Claim Text:
1. A method for providing an anode for a high voltage implantable electrolytic capacitor, the method comprising the steps of: a) providing tantalum fibers having a diameter ranging from 0.5 μm to 2.5 μm and a length ranging from 5 μm to 50 μm; b) providing a primary tantalum powder as a loosely packed mass of the tantalum fibers; c) agglomerating the primary tantalum powder into a randomly oriented, substantially non-aligned, porous agglomerated tantalum powder; d) pressing the agglomerated tantalum powder into a tantalum pellet of a desired shape; e) sintering the tantalum pellet into a coalesced body of the tantalum fibers to thereby provide a sintered tantalum pellet; and f) anodizing the sintered tantalum pellet to a formation voltage of at least 300 V to form an anode having a dielectric oxide on the tantalum fibers.