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Title:
ALUMINUM MATERIAL FOR ELECTROLYTIC CAPACITOR ELECTRODE, ITS MANUFACTURING METHOD, ELECTRODE MATERIAL FOR ALUMINUM ELECTROLYTIC CAPACITOR AND ALUMINUM ELECTROLYTIC CAPACITOR
Document Type and Number:
Japanese Patent JP2008166602
Kind Code:
A
Abstract:

To provide an aluminum material for an electrolytic capacitor electrode excellent in etching characteristics, which can surely increase the expanded surface rate and increase the electrostatic capacitance further by forming uniform etch pits in a high density and starting deep etching from these etch pits to make coupling hard within a tunnel.

An anodic oxide film 3 is formed on the surface of the aluminum material 1, and many fine recessed parts 6, which have the average size of 0.01 to 10 m by a circle equivalent diameter and for which the anodic oxide film thinner than the periphery remains at the bottom part or an aluminum base is exposed, are formed in a dispersed state.


Inventors:
ONO SACHIKO
ASO HIDETAKA
SAKAGUCHI MASASHI
YAMANOI TOMOAKI
FUKUI KIYOSHI
Application Number:
JP2006356251A
Publication Date:
July 17, 2008
Filing Date:
December 28, 2006
Export Citation:
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Assignee:
ONO SACHIKO
SHOWA DENKO KK
International Classes:
H01G9/055; C25D11/04; C25D11/06; C25D11/12; C25D11/16; C25D11/24; H01G9/04
Domestic Patent References:
JPS6328027A1988-02-05
JPH01316924A1989-12-21
JPS6215813A1987-01-24
JPH0494111A1992-03-26
JP2001009800A2001-01-16
JP2004308005A2004-11-04
JPH01282813A1989-11-14
JPH06168853A1994-06-14
JPS6379311A1988-04-09
JP2000228333A2000-08-15
JPS6258609A1987-03-14
JPS63306614A1988-12-14
JPH04206619A1992-07-28
JP2004250772A2004-09-09
Attorney, Agent or Firm:
Hisayoshi Shimizu
Ken Takada
Yoshihito Shimizu



 
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