ALUMINUM MATERIAL FOR ELECTRODE OF ELECTROLYTIC CAPACITOR AND METHOD FOR PRODUCING ALUMINUM FOIL FOR ELECTRODE OF ELECTROLYTIC CAPACITOR, AND ELECTROLYTIC CAPACITOR

Title:

ALUMINUM MATERIAL FOR ELECTRODE OF ELECTROLYTIC CAPACITOR AND METHOD FOR PRODUCING ALUMINUM FOIL FOR ELECTRODE OF ELECTROLYTIC CAPACITOR, AND ELECTROLYTIC CAPACITOR

Document Type and Number:

WIPO Patent Application WO/2002/027052

Kind Code:

A1

Abstract:

An aluminum material for an electrode of an electrolytic capacitor which has a chemical composition: Al purity: 99.9 % or higher, 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 to 100 ppm in total, B: 2 ppm or less, and balance: aluminum and inevitable impurities; and the above aluminum material which further comprises Ti in an amount of 1 to 30 ppm, or one or more Mn group elements (one or more of Mn, Ga, Mg and Ca) in an amount of 1 to 50 ppm in total, or one or more In group elements (one or more of In, Sn and Sb) in an amount of 1 to 30 ppm in total. A method for producing an aluminum foil for an electrode of an electrolytic capacitor which comprises rolling the aluminum having one of above-mentioned chemical compositions into a foil, and then subjecting the foil to a final annealing at 430 to 580 °.

Inventors:

KATO TARO (JP)
KOYAMA AKIRA (JP)
AKAO MASATO (JP)
FUJIHIRA TADAO (JP)
YAMANOI TOMOAKI (JP)
ZHANG JIN (JP)

Application Number:

PCT/JP2001/008170

Publication Date:

April 04, 2002

Filing Date:

September 20, 2001

Export Citation:

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Assignee:

NICHICON CORP (JP)
SHOWA DENKO KK (JP)
KATO TARO (JP)
KOYAMA AKIRA (JP)
AKAO MASATO (JP)
FUJIHIRA TADAO (JP)
YAMANOI TOMOAKI (JP)
ZHANG JIN (JP)

International Classes:

C22C21/00; C22F1/04; H01G9/04; H01G9/042; H01G9/045; B21B1/40; B21B3/00; B21B45/00; (IPC1-7): C22C21/00; H01G9/045

Foreign References:

JPH10140276A	1998-05-26
JPH02270928A	1990-11-06
JPH055145A	1993-01-14
JPS53114059A	1978-10-05

Other References: