Aluminum material for electrode of electrolytic capacitor...

Details Aluminum material for electrode of electrolytic capacitor... Aluminum material for electrode of electrolytic capacitor...

2005-04-05

2005-04-05

Nguyen, Chau N. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C361S516000, C361S519000, C361S525000, C361S528000, C361S529000, C029S025030

Reexamination Certificate

active

06876541

ABSTRACT:
An aluminum material for electrolytic capacitor electrodes, the aluminum material having aluminum purity of 99.9% or more, consisting of: Si: 2 to 50 ppm; Fe; 2 to 50 ppm; Cu: 15 to 150 ppm; Zn: 1 to 80 ppm; Pb: 0.1 to 3 ppm; at least one of Zr and V: 11 ppm or more, a total content of the at least one of Zr and V being 11 to 100 ppm; and the balance being Al and impurities, wherein a content of B is controlled to be 2 ppm or less. In the aluminum material, Ti: 1 to 30 ppm, Mn group composition (at least one of Mn, Ga, Mg and Ca): 1 to 50 ppm in total, and In group composition (at least one of In, Sn, Sb): 1 to 30 ppm in total are selectively added. A method for manufacturing an aluminum foil for electrolytic capacitor electrodes according to the present invention, comprises the steps of: rolling the aforementioned aluminum material into a foil; and performing final annealing of the foil at the temperature of 430 to 580° C.

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patent: 6291107 (2001-09-01), Shimizu
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