Anodic films that have a white color, and methods for forming the same, are described. According to some embodiments, the anodic films have multiple metal oxide layers. A first layer can provide scratch and chemical resistance and a second layer can provide a light diffusing pore structure that diffusely reflects incoming light and provides a white appearance to the anodic film. According to some embodiments, the anodic films also include a smoothed barrier layer that specularly reflects incoming light so as to brighten the appearance and enhance the white color of the anodic film. The resulting anodic films have an opaque white appearance not achievable using conventional techniques. The anodic films are well suited for providing cosmetically appealing coatings for consumer products, such as housings for electronic products.

A process is disclosed for minimizing the difference in thermal expansivity between a porous anodic oxide coating and its corresponding substrate metal, so as to allow heat treatments or high temperature exposure of the anodic oxide without thermally induced crazing. A second phase of higher thermal expansivity than that of the oxide material is incorporated into the pores of the oxide in sufficient quantity to raise the coating's thermal expansion coefficient. The difference in thermal expansion between the anodic oxide coating and underlying metal substrate is reduced to a level such that thermal exposure is insufficient for any cracking to result. The second phase may be an electrodeposited metal, or an electrophoretically deposited polymer. The second phase may be uniformly deposited to a certain depth, or may be deposited at varying amounts among the pores.

A process is disclosed for minimizing the difference in thermal expansivity between a porous anodic oxide coating and its corresponding substrate metal, so as to allow heat treatments or high temperature exposure of the anodic oxide without thermally induced crazing. A second phase of higher thermal expansivity than that of the oxide material is incorporated into the pores of the oxide in sufficient quantity to raise the coating's thermal expansion coefficient. The difference in thermal expansion between the anodic oxide coating and underlying metal substrate is reduced to a level such that thermal exposure is insufficient for any cracking to result. The second phase may be an electrodeposited metal, or an electrophoretically deposited polymer. The second phase may be uniformly deposited to a certain depth, or may be deposited at varying amounts among the pores.

This application relates to a part that includes a metal oxide layer having pore structures. In some embodiments, dye molecules having aromatic rings can be disposed within at least one of the pore structures. Additionally, the at least one pore structures can include dispersion molecules, where the dispersion molecules form non-covalent interactions with the dye molecules. By forming non-covalent interactions between the dye molecules and the dispersion molecules, the aromatic rings of the dye molecules are prevented from forming other non-covalent interactions with other dye molecules. Additionally, techniques for chemically stabilizing the color dye bath for dyeing anodized parts are also described.

This application relates to a part that includes a metal oxide layer having pore structures. In some embodiments, dye molecules having aromatic rings can be disposed within at least one of the pore structures. Additionally, the at least one pore structures can include dispersion molecules, where the dispersion molecules form non-covalent interactions with the dye molecules. By forming non-covalent interactions between the dye molecules and the dispersion molecules, the aromatic rings of the dye molecules are prevented from forming other non-covalent interactions with other dye molecules. Additionally, techniques for chemically stabilizing the color dye bath for dyeing anodized parts are also described.

The purpose of the present invention is to provide: a pellicle frame which is not susceptible to deterioration even if irradiated with short-wavelength light such as excimer light, and which is not susceptible to generation of an outgas or foreign substance; and a pellicle which uses this pellicle frame. In order to achieve the above-described purpose, this pellicle frame for supporting the outer periphery of a pellicle film is configured to comprise a frame and a film that is formed on the surface of the frame and contains a polyimide resin.

In example implementations, a method for producing a thin film coating is provided. The method includes pre-treating a substrate, placing the substrate in a bath comprising at least phosphoric acid and sulphuric acid to produce a thin anodized layer, rinsing the thin anodized layer in a solution, plating a surface of the thin anodized layer in an electro deposition bath following a plating current profile for a predetermined period, and increasing the plating current to the recommended bath plating current to produce the thin film coating having a desired initial coating thickness.

A method for the manufacture of plastic components that are corrosion-stable, optionally coated in metallic color and decorative first manufactures the components to be coated from a galvanizable plastic in the plastic injection-molding process and then subjects them to a chemical pretreatment, in which a first conductive metal layer is deposited and then an aluminum surface is deposited galvanically. The deposited aluminum surface is oxidized in a subsequent aluminum anodization process.

A method for the manufacture of plastic components that are corrosion-stable, optionally coated in metallic color and decorative first manufactures the components to be coated from a galvanizable plastic in the plastic injection-molding process and then subjects them to a chemical pretreatment, in which a first conductive metal layer is deposited and then an aluminum surface is deposited galvanically. The deposited aluminum surface is oxidized in a subsequent aluminum anodization process.

The present disclosure provides an aluminum alloy casing, a preparation method thereof, and a personal electronic device. The aluminum alloy casing includes an aluminum alloy matrix and an oxide film layer covering the surface of the aluminum alloy matrix, wherein the aluminum alloy matrix has a slit, the oxide film layer includes an inner anodic oxide film layer and an outer anodic oxide film layer, and the inner anodic oxide film layer has inner anodic oxide film layer nanopores; and the outer anodic oxide film layer has outer anodic oxide film layer nanopores.