| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-treated aluminum member having an anode oxide film with excellent voltage resistance per unit film thickness while it can be easily manufactured. SOLUTION: The surface-treated aluminum member has a base material consisting of aluminum or an aluminum alloy, and an anode oxide film formed on the surface of the base material, and is used for a voltage application part. The anode oxide film has a first film formed on the surface side, and a second film formed on the base material side. The mass ratio (S/Al) of the S(Sulfur) content to the Al (Aluminum) content in the first film is 0.10-0.15. The mass ratio (S/Al) of the S content to the Al content in the second film is 0-0.04. The ratio (the first film thickness/the total film thickness) of the thickness of the first film to the total film thickness is≥0.33, and the ratio (the second film thickness/the total film thickness) of the thickness of the second film to the total film thickness is≥0.25. COPYRIGHT: (C)2011,JPO&INPIT |
