Title:
アルミニウム電解コンデンサ、およびアルミニウム電解コンデンサの製造方法
Document Type and Number:
Japanese Patent JP4816640
Kind Code:
B2
Abstract:
An aluminum plate having an aluminum purity of not less than 99.98% by mass and an Fe content of 5 to 50 ppm with the balance consisting of unavoidable impurities is used to realize increased capacitance of an aluminum electrolytic capacitor, reduced height, and improved high frequency characteristics. In this aluminum plate, the total content of Fe in crystal/precipitate is 1 to 50% based on the original content, and the thickness of the aluminum plate 0.2 to 1 mm. In the formation of a capacitor anode, the aluminum plate is subjected to alternate current etching so as to leave a core part having an average thickness of 50 to 150 mum in the center part in the thickness-wise direction to increase the surface area, followed by anodic oxidation.
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Inventors:
Masahiko Katano
Shoji Isobe
Shinichi Arai
Shoji Isobe
Shinichi Arai
Application Number:
JP2007509202A
Publication Date:
November 16, 2011
Filing Date:
March 13, 2006
Export Citation:
Assignee:
NIPPON LIGHT METAL COMPANY,LTD.
International Classes:
H01G9/042; C22C21/00; C25D11/04; C25D11/16; H01G9/012; H01G9/04
Domestic Patent References:
| JP3061333B2 | 2000-07-10 | |||
| JP2004319795A | 2004-11-11 | |||
| JP2001257132A | 2001-09-21 | |||
| JPH06188159A | 1994-07-08 | |||
| JP2005045007A | 2005-02-17 |
Attorney, Agent or Firm:
Shiro Yokozawa