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1. (WO2013118870) SURFACE TREATED ALUMINUM MATERIAL, METHOD FOR PRODUCING SAME, AND RESIN-COATED SURFACE TREATED ALUMINUM MATERIAL

Pub. No.:    WO/2013/118870    International Application No.:    PCT/JP2013/053062
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Sat Feb 09 00:59:59 CET 2013
IPC: C25D 11/04
C25D 11/06
Applicants: UACJ CORPORATION
株式会社UACJ
Inventors: HASEGAWA Shinichi
長谷川真一
KOJIMA Yoichi
兒島洋一
Title: SURFACE TREATED ALUMINUM MATERIAL, METHOD FOR PRODUCING SAME, AND RESIN-COATED SURFACE TREATED ALUMINUM MATERIAL
Abstract:
[Problem] To provide: a surface treated aluminum material which has excellent bondability and adhesion over the entire surface of the aluminum material; and a method for producing the surface treated aluminum material. [Solution] A surface treated aluminum material which is provided with an oxide coating film on at least one surface. The surface treated aluminum material is characterized in that the oxide coating film is composed of a porous aluminum oxide coating layer that is formed on the surface side and has a thickness of 20-500 nm and a barrier aluminum oxide coating layer that is formed on the base side and has a thickness of 3-30 nm. The surface treated aluminum material is also characterized in that the porous aluminum oxide coating layer is provided with fine pores each having a diameter of 5-30 nm and that the fluctuation range of the total thickness of the porous aluminum oxide coating layer and the barrier aluminum oxide coating layer is within ±50% of the arithmetic mean of the total thickness in the whole surface of the aluminum material. Also provided is a method for producing the surface treated aluminum material.