To provide a surface structure of an aluminum-based member which can further improve heat insulating properties and heat shielding properties of the aluminum-based member. In an aluminum-based member 1 containing at least a silicon composition, a porous oxide film 2 is provided on a surface of the aluminum-based member 1, and the oxide film 2 is constituted to have at least a pore 2a extending from the surface toward an inside in a thickness direction of the oxide film 2 and a void 3a present inside the silicon composition 3 extending in a direction substantially orthogonal to the thickness direction of the oxide film 2.

Provided are: a support frame for pellicle that has both low dust generation property and high light resistance, and further has an ion elution amount which is reduced to the utmost limit to an extent that haze is not generated even when a short wavelength laser is used for exposure light source, a pellicle using the support frame for pellicle, and a method for efficiently manufacturing the support frame for pellicle, support frame for pellicle which comprises a frame member comprising aluminum or aluminum alloy and an inorganic coating layer formed on the surface of the frame member, wherein the main chain of the inorganic coating layer is constituted by a —Si—O—Si—O— bond. An anodized film is preferably formed between the frame member and the inorganic coating layer.

A process includes means for depositing an anti-corrosion coating filled with liquid oil on an aluminum substrate. Aluminum is anodized and then treated with a thin hydrophobic sub-coating. The pores created through anodization are then impregnated with liquid oil. Oil penetration is maximized and residual air is minimized by first filling the pores with a filling solution, replacing the filling solution with an exchange fluid, and then replacing the exchange fluid with perfluorinated oil. The oil gives the surface coating anti-wetting properties and self-healing properties, thereby protecting the aluminum substrate underneath from corrosion.

Disclosed are methods of anodizing a metal component. In the methods an anodization bath includes an organic acid.

An electrode holder and a method for producing an electrode for an aluminum electrolytic capacitor are provided that enable prevention of exfoliation of a porous layer during chemical formation even when the porous layer is formed on an aluminum electrode so as to have a thickness of 200 micrometers or greater. When an aluminum electrode 10 having at least one surface 11 on which a porous layer 17 having a thickness of 200 micrometers or greater is formed is subjected to chemical formation in a chemical formation solution, the aluminum electrode 10 is held by an electrode holder 50. The electrode holder 50 includes: an insulating first support plate 51 configured to overlap the one surface 11 of the aluminum electrode 10; an insulating second support plate 52 configured to overlap the other surface 12 of the aluminum electrode 10; and a connecting part 53 configured to connect the first support plate 51 and the second support plate 52 to each other. A portion of the first support plate 51 that overlaps the porous layer 17 while being in contact therewith is formed with a porous member 510.

To provide an aluminum surface treatment method for manufacturing a polymer-aluminum joint structure having excellent bond strength. An aluminum surface treatment method for bonding with a polymer composite which is characterized in that it includes (a) a primary anodizing treatment step wherein the aluminum surface is treated by anodic oxidation; (b) a step wherein the aluminum oxide film is removed from the aluminum that has undergone the primary anodizing treatment; and (c) a secondary anodizing treatment step wherein the aluminum from which the aluminum oxide film is removed following the primary anodizing treatment is treated by anodic oxidation again.

The present invention is related to the field of metal surface preparation by anodizing processes and refers to a method for producing a corrosion-resistant aluminum-silicon alloy casting and more particularly to the optimization of the anodizing cast aluminum parts with high silicon content, by using a multiple step anodizing cycle. Moreover, the present invention refers to a corrosion-resistant aluminum-silicon alloy casting and its use.

The present invention is related to the field of metal surface preparation by anodizing processes and refers to a method for producing a corrosion-resistant aluminum-silicon alloy casting and more particularly to the optimization of the anodizing cast aluminum parts with high silicon content, by using a multiple step anodizing cycle. Moreover, the present invention refers to a corrosion-resistant aluminum-silicon alloy casting and its use.

An improved thin film optical interference apparatus, methods of use and of manufacture are provided, the apparatus comprising means for generating optical interference colours directly on the surface of a single layer of anodized metal. The interference colours generated by the presently improved apparatus can be used to indicate the presence of at least one organic compound or analyte.

An improved thin film optical interference apparatus, methods of use and of manufacture are provided, the apparatus comprising means for generating optical interference colours directly on the surface of a single layer of anodized metal. The interference colours generated by the presently improved apparatus can be used to indicate the presence of at least one organic compound or analyte.