Title:
ANODIC POROUS ALUMINA, PRODUCTION METHOD FOR SAME, ANODIC POROUS ALUMINA THROUGH-HOLE MEMBRANE, AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2018/003562
Kind Code:
A1
Abstract:
[Problem] To provide anodic porous alumina that has a fine pore pitch of greater than 700 nm and can be produced over a large area and on a curved surface, and a method for producing porous alumina that is capable of providing such a pore pitch and can be applied to a large area and a roll-shaped metal. [Solution] The anodic porous alumina has fine pores at a pitch of 720 nm or greater, the fine pores being regularly arranged in an ideal triangular lattice pattern in a range in which the fine pores are arranged in four or more columns and four or more rows. The method for producing anodic porous alumina comprises an anodizing step of anodizing an aluminum material. In the anodizing step, an acidic electrolyte used for anodization contains a main acid and phosphoric acid or a phosphoric acid salt in an amount of not more than 1% by weight of the entire electrolyte.
Inventors:
MASUDA HIDEKI (JP)
YANAGISHITA TAKASHI (JP)
YANAGISHITA TAKASHI (JP)
Application Number:
PCT/JP2017/022466
Publication Date:
January 04, 2018
Filing Date:
June 19, 2017
Export Citation:
Assignee:
UNIV TOKYO METROPOLITAN (JP)
International Classes:
C25D11/04; C25D11/06; C25D11/12; C25D11/24
Domestic Patent References:
| WO2013180119A1 | 2013-12-05 | |||
| WO2014020939A1 | 2014-02-06 |
Foreign References:
| JP2013057102A | 2013-03-28 | |||
| JP2012167321A | 2012-09-06 |
Attorney, Agent or Firm:
MATSUYAMA Yuichiro (JP)
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