Title:
ALUMINUM MULTILAYER BODY AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/163466
Kind Code:
A1
Abstract:
This aluminum multilayer body (10) is provided with: an aluminum base material (1) which has a first surface (1A); and an anodic oxide coating film (2) which is formed to be in contact with the first surface (1A), and which has a second surface (2A) that is at a distance from the first surface (1A) in a direction that intersects with the first surface (1A). The surface layer of the aluminum base material (1), which includes the first surface (1A), contains aluminum that has a purity of 99.9% by mass or more and from 0.001% by mass to 0.02% by mass (inclusive) of iron. The second surface (2A) of the anodic oxide coating film (2) has a surface roughness Ra of 15 nm or less. The anodic oxide coating film (2) has a thickness of from 2 μm to 20 μm (inclusive) in the intersecting direction. The total thickness T1 (unit: μm) of the aluminum multilayer body (1) in the intersecting direction and the thickness T2 (unit: μm) of the anodic oxide coating film (2) in the intersecting direction satisfy relational expression: T1 + 10 × T2 ≤ 230. The anodic oxide coating film (2) has an admittance Y value of sealing degree of less than 100 μS.
Inventors:
SHINGU AKIRA (JP)
OOYAGI MITSUNARI (JP)
OOYAGI MITSUNARI (JP)
Application Number:
PCT/JP2019/003392
Publication Date:
August 29, 2019
Filing Date:
January 31, 2019
Export Citation:
Assignee:
TOYO ALUMINIUM KK (JP)
International Classes:
C25D11/04; C25D11/08; C25D11/18
Foreign References:
| JP2012033853A | 2012-02-16 | |||
| JP2011171379A | 2011-09-01 | |||
| JP2012201891A | 2012-10-22 | |||
| JP2015196867A | 2015-11-09 | |||
| JPH0475208A | 1992-03-10 | |||
| JP2013253317A | 2013-12-19 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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