ALUMINUM ALLOY HAVING EXCELLENT ANODIC OXIDATION TREATABILITY, AND ANODIC-OXIDATION-TREATED ALUMINUM ALLOY MEMBER

Title:

ALUMINUM ALLOY HAVING EXCELLENT ANODIC OXIDATION TREATABILITY, AND ANODIC-OXIDATION-TREATED ALUMINUM ALLOY MEMBER

Document Type and Number:

WIPO Patent Application WO/2014/017297

Kind Code:

A1

Abstract:

An aluminum alloy comprising more than 3.5% and up to 6.0% of Mg, 0.02 to 1.0% inclusive of Cu, 0.02 to 0.1% inclusive of Cr, and a remainder made up by Al and unavoidable impurities, wherein the contents of Si and Fe in the unavoidable impurities are limited to 0.05% or less and 0.05% or less, respectively, and wherein the number of intermetallic compound particles contained in the aluminum alloy and having a maximum length of 4 μm or more is 50 particles or less per 1 mm2 of an arbitrary cross-sectional area of the aluminum alloy. An aluminum alloy is provided, which has excellent anodic-oxidation-treatability and can be used for providing an anodic-oxidation-treated aluminum alloy member having high withstand voltage properties and such excellent heat resistance that the occurrence of cracking under high temperatures conditions can be prevented.

Inventors:

TAKADA SATORU
KOBAYASHI KAZUNORI
TANAKA TOSHIYUKI
INOUE KENICHI

Application Number:

PCT/JP2013/068870

Publication Date:

January 30, 2014

Filing Date:

July 10, 2013

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

C22C21/06; C25D11/04; C25D11/06

Domestic Patent References:

WO2010013705A1	2010-02-04
WO2006134737A1	2006-12-21

Foreign References:

JP2003171727A	2003-06-20
JP2003119540A	2003-04-23
JP2002256488A	2002-09-11
JP2002241992A	2002-08-28
JP2010283342A	2010-12-16

Other References: