METHOD FOR PRODUCING ALUMINUM MATERIAL FOR ELECTROLYTIC CAPACITOR ELECTRODE, ALUMINUM MATERIAL FOR ELECTROLYTIC CAPACITOR ELECTRODE, ANODE MATERIAL FOR ALUMINUM ELECTROLYTIC CAPACITOR, METHOD FOR PRODUCING ANODE MATERIAL FOR ELECTROLYTIC CAPACITOR, AND ALUMINUM ELECTROLYTIC CAPACITOR

Title:

Document Type and Number:

Japanese Patent JP2011252229

Kind Code:

A

Abstract:

To provide a method for producing an aluminum material for an electrolytic capacitor electrode having excellent etching properties where, in the production of an aluminum material for an electrolytic capacitor electrode in which heating in an oxidizing atmosphere is performed after the completion of cold rolling and before final annealing, the contents of included trace elements are suitably controlled, whereby a problem wherein the etching properties of the aluminum material after final annealing are insufficient is solved; and also to provide an aluminum material for an electrolytic capacitor electrode, an anode material for an aluminum electrolytic capacitor, a method for producing an anode material for an electrolytic capacitor, and an aluminum electrolytic capacitor.

In the production of this aluminum material for an electrolytic capacitor electrode, the content of Pb in the aluminum material is set to 0.3-2.5 ppm by mass, and the aluminum material after the completion of cold rolling and before final annealing is heated in an oxidizing atmosphere.

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Inventors:

NISHIMORI HIDEKI
YAMANOI TOMOAKI

Application Number:

JP2011144325A

Publication Date:

December 15, 2011

Filing Date:

June 29, 2011

Export Citation:

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Assignee:

SHOWA DENKO KK

International Classes:

C22F1/04; C22C21/00; C23G1/12; C23G1/22; C23G5/02; C25D11/04; C25F3/04; H01G9/00; H01G9/055; C22F1/00

Domestic Patent References:

JPH05279815A	1993-10-26
JPH07201673A	1995-08-04
JPH04127412A	1992-04-28
JPH05200407A	1993-08-10
JP2000204456A	2000-07-25
JPH10140276A	1998-05-26
JP2001210561A	2001-08-03

Attorney, Agent or Firm:

Yoshihito Shimizu
Hisayoshi Shimizu
Ken Takada

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