An aluminum alloy is described and has compositions with mass percentage content consisting of: 5.0%-5.4% Zn; 0.9%-1.2% Mg; Cu<0.05%; Si<0.05%; Fe<0.1%; Mn<0.05%; Zr<0.1%; Ti<0.05%; other impurities <0.15%; and the remaining composition being Al. An anodizing method of the aluminum alloy described above is described and has: a degreasing treatment, a first black-film stripping treatment, a chemical polishing treatment, a second black-film stripping treatment, an anodizing treatment, a hole filling treatment and a drying treatment which are performed in turn. The aluminum alloy has a higher strength while eliminating an influence of a formed compound phase on a material texture.

According to an aspect of the present invention, there is provided an aluminum product. The Aluminum product may comprise an aluminum substrate configured to include a pattern and a white aluminum fluoride (AlF.sub.3) film on a surface thereof; and an anodized film configured to be disposed adjacent to the white aluminum fluoride (AlF3) film and include a plurality of pores.

According to an aspect of the present invention, there is provided an aluminum product. The Aluminum product may comprise an aluminum substrate configured to include a pattern and a white aluminum fluoride (AlF.sub.3) film on a surface thereof; and an anodized film configured to be disposed adjacent to the white aluminum fluoride (AlF3) film and include a plurality of pores.

Anodic oxide coatings that provide corrosion resistance to parts having protruding features, such as edges, corners and convex-shaped features, are described. According to some embodiments, the anodic oxide coatings include an inner porous layer and an outer porous layer. The inner layer is adjacent to an underlying metal substrate and is formed under compressive stress anodizing conditions that allow the inner porous layer to be formed generally crack-free. In this way, the inner porous layer acts as a barrier that prevents water or other corrosion-inducing agents from reaching the underlying metal substrate. The outer porous layer can be thicker and harder than the inner porous layer, thereby increasing the overall hardness of the anodic oxide coating.

Anodic oxide coatings that provide corrosion resistance to parts having protruding features, such as edges, corners and convex-shaped features, are described. According to some embodiments, the anodic oxide coatings include an inner porous layer and an outer porous layer. The inner layer is adjacent to an underlying metal substrate and is formed under compressive stress anodizing conditions that allow the inner porous layer to be formed generally crack-free. In this way, the inner porous layer acts as a barrier that prevents water or other corrosion-inducing agents from reaching the underlying metal substrate. The outer porous layer can be thicker and harder than the inner porous layer, thereby increasing the overall hardness of the anodic oxide coating.

The invention relates to an apparatus for continuously electrolytically coating a wire for a high tension cable for use in overhead transmission lines, wherein the apparatus comprises a bath for an aqueous electrolytic solution containing a precursor for an electro-ceramic coating on a wire, a first air knife cleaning device, an electrification device for electrifying the wire, a plurality of guide members positioned to route the wire from into, through and out of the bath, a cathodic connection positioned in the bath for contacting the aqueous electrolytic solution, and a power source electrically connected to the electrification device and the cathodic connection, said power source capable of providing high voltage and high current to the wire through the electrification device, and through the wire in the bath to the cathode connection via the aqueous electrolytic solution.

The invention relates to an apparatus for continuously electrolytically coating a wire for a high tension cable for use in overhead transmission lines, wherein the apparatus comprises a bath for an aqueous electrolytic solution containing a precursor for an electro-ceramic coating on a wire, a first air knife cleaning device, an electrification device for electrifying the wire, a plurality of guide members positioned to route the wire from into, through and out of the bath, a cathodic connection positioned in the bath for contacting the aqueous electrolytic solution, and a power source electrically connected to the electrification device and the cathodic connection, said power source capable of providing high voltage and high current to the wire through the electrification device, and through the wire in the bath to the cathode connection via the aqueous electrolytic solution.

A chassis member for a chassis of an electronic device is disclosed. The chassis member includes an aluminum alloy layer and an alumite layer serving as an outermost layer of the chassis member and disposed on a surface of the aluminum alloy layer. A grain size of an aluminum alloy in the aluminum alloy layer is between 40 μm and 50 μm.

The invention relates to compositions and methods that are useful in etching a metal surface. In particular, the invention relates to novel acid compositions and methods of using such compositions in etching a metal surface, preferably an aluminum surface prior to anodizing to dissolve impurities, imperfections, scale, and oxide. The compositions are effective in maintaining their etching capacity and in removing smut produced by the etching of a surface as well as in general cleaning.

The present application discloses a display panel and a manufacturing method therefor, and the method includes steps of: forming a photosensitive element layer, forming a light collimating layer on the photosensitive element layer, and forming an active light-emitting matrix layer on the light collimating layer; where the step of forming the light collimating layer includes: providing a metal substrate, putting the metal substrate into an electrolyte, and preparing a porous oxidized metal as the light collimating layer by a two-step oxidation method.