Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SURFACE-TREATED ALUMINUM ALLOY MATERIAL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/182021
Kind Code:
A1
Abstract:
The present invention provides a surface-treated aluminum alloy material which has a configuration that enables an oxide coating layer to have reliably improved adhesion and bondability to a resin layer, said oxide coating layer being provided on the surface of a base material that is formed of an aluminum alloy containing Si. The present invention is a surface-treated aluminum alloy material (1) that comprises: a base material (2) which contains Si; and an oxide coating layer (3) which is formed on a part or the whole of the surface of the base material (2) by means of alternating-current electrolysis in an alkaline liquid. The oxide coating layer (3) comprises: a porous aluminum oxide coating layer (31) which is formed on the front surface side and has a thickness of 20-1,000 nm; and a barrier-type aluminum oxide coating layer (32) which is formed on the base material (2) side and has a thickness of 3-50 nm. A plurality of micropores (4) having a diameter of 3-50 nm are present within the porous aluminum oxide coating layer (31); crystallized products (5) which are composed of an elemental Si or an intermetallic compound containing Si have an average circle-equivalent diameter of 15 μm or less; and the crystallized products (5) are present at an area ratio of 15% or less.

Inventors:
KIKUCHI MIHOKO (JP)
MIMURA TATSUYA (JP)
HATANO KAZUAKI (JP)
WATANABE HIRONORI (JP)
Application Number:
PCT/JP2019/011741
Publication Date:
September 26, 2019
Filing Date:
March 20, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UACJ CORP (JP)
International Classes:
C25D11/04; B21B1/26; B22D11/00; B22D27/04; C22C21/02; C22F1/00; C22F1/043
Foreign References:
JP2015067844A2015-04-13
JP2015202503A2015-11-16
JP2019026924A2019-02-21
Attorney, Agent or Firm:
AICHI, TAKAHASHI, IWAKURA & ASSOCIATES (JP)
Download PDF: