To provide an aluminum alloy member having low staining property and coping with low staining need recently growing regardless of a component composition of the aluminum alloy used for a base material even when an aluminum alloy having special component composition requiring time and labor in the manufacture is not adopted.
The aluminum alloy member has an anodized film formed on the surface of a base material comprising the aluminum alloy. The anodized film has a porous layer in which barrier thickness between pores is ≤30 nm, in the depth of ≥1 μm from the surface side of the film. The barrier thickness between the pores is >30 nm and the barrier layer thickness is ≥5 μm in the region of the base material side except for the porous layer of the surface side.
COPYRIGHT: (C)2010,JPO&INPIT
TSUBOTA TAKAYUKI
WADA KOJI
HISAMOTO ATSUSHI
| JPH08132749A | 1996-05-28 | |||
| JP2006213992A | 2006-08-17 | |||
| JP2002004087A | 2002-01-09 | |||
| JP2006510229A | 2006-03-23 | |||
| JPH08144089A | 1996-06-04 |
Makoto Suhara
Takenaka Yoshimichi
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