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US 2022/0037671 A1Published application
Aluminum member for electrodes and method of producing aluminum member for electrodes
AssigneeFUJIFILM Corporation
InventorHiroshi Komatsu
Life of this patent
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Abstract
Provided is an aluminum member for electrodes capable of stably maintaining a low electric resistance state, and a method of producing an aluminum member for electrodes. An aluminum member for electrodes includes an aluminum substrate and an oxide film that is laminated on at least one main surface of the aluminum substrate, and the oxide film has a density of 2.7 to 4.1 g/cm3 and a thickness of 5 nm or less.
Claims9
A method of producing an aluminum member for electrodes, the method comprising:
- a coating forming step of carrying out an electrolytic treatment in a first acidic aqueous solution using an aluminum substrate as a cathode to form an aluminum hydroxide coating on a surface of the aluminum substrate;
- a coating removing step of bringing the aluminum substrate after the coating forming step into contact with an alkaline aqueous solution to remove the aluminum hydroxide coating;
- and
- an oxide film forming step of bringing the aluminum substrate after the coating removing step into contact with a second acidic aqueous solution to form an oxide film on the surface of the aluminum substrate, wherein the oxide film has a density of 2.7 to 4.1 g/cm3 and a thickness of 5 nm or less.
1 more element
Dependencies are inferred from the claim text.