Title: Tantalum anode for electrolytic devices

Abstract: An anode for electrolytic devices formed from pressed and sintered compacts of an agglomerated refractory metal powder comprised of polynodal granules of adhered particles with the nodes being of a size the same order of magnitude as the size of the individual particles. Such agglomerated powder is produced by the method including the steps of heating a powder under chemically non-reactive conditions to effect agglomeration between the powder particles, and subsequently crushing the resultant particulate porous agglomerated mass to form said agglomerated polynodal granules. The anodes combine low green and sintered density, equivalent series resistance, dissipation factor and D.C. leakage with a high specific capacitance.

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Inventors: Pierret, James A. (Muskogee, OK, US)

Application Number: 555377
Filing Date: 1975-03-05
Publication_date: 1976-01-20
Assignee: Fansteel Inc. (North Chicago, IL)
Primary Class(es): 361/529 75/245, 75/356, 204/292, 419/2, 419/29
Other Classes:
US Patent Ref:

3144328	Aug, 1964	Doty	75/209.
3422515	Jan, 1969	Klein	317/230.
3667002	May, 1972	Klein	317/230.
3688161	Aug, 1972	Klein	317/230.
3742369	Jun, 1973	Douglass	317/230.

Other Refs:
Primary Examiner: James, Andrew J.
Assistant Examiner:
Attorney: Dressler, Goldsmith, Clement & Gordon, Ltd.