The present invention relates to a process for the production of an aluminium multilayer brazing sheet which comprises a core layer made of a 3xxx alloy comprising 0.1 to 0.25 wt. % Mg, a brazing layer made of a 4xxx alloy on one or both sides of the core layer, and optionally an interlayer between the core layer and the brazing layer on one or both sides of the core layer, the process comprising the successive steps of: providing the layers to be assembled or simultaneous casting of the layers to obtain a sandwich; rolling of the resulting sandwich to obtain a sheet; and treating the surface of the sheet with an alkaline or acidic etchant.

A decoration panel for home appliances having excellent reflectivity and durability, the decoration panel being applicable to outer sides of various home appliances, a home appliance including the decoration panel, and a method for manufacturing the decoration panel. More specifically, the decoration panel for home appliances includes: an aluminum substrate with one surface in which an engraved pattern having a preset width and a preset depth is formed, the engraved pattern having micro unevenness formed in a surface of the engraved pattern; a porous aluminum oxide layer formed on the engraved pattern; and a sealing layer formed to close a plurality of pores of the porous aluminum oxide layer, wherein an edge of the aluminum substrate is in a Chamfering (C) shape or a Rounding (R) shape.

According to an embodiment, a housing of an electronic device comprises: a metal frame, wherein a surface of the metal frame has: a gloss value of 1 gloss unit (Gu) to 10 Gu, and a maximum height of a plurality of irregularities disposed on the surface in a range between 0.1 μm to 2.3 μm, and a maximum depth of valleys between the plurality of irregularities in a range between 0.1 μm to 1.8 μm, and a number of the plurality of irregularities per unit area of 1 cm.sup.2 in a range between 90 to 200.

A turbocharger compressor wheel with an aluminum proportion of at least 50 atom percent, produced by. etching a turbine wheel base body using an alkaline etchant to produce a specific etch pitting consisting of nano pores and micropores and chemical deposition of a nickel-phosphorous protective layer (19) onto the etched base body surface.

A turbocharger compressor wheel with an aluminum proportion of at least 50 atom percent, produced by. etching a turbine wheel base body using an alkaline etchant to produce a specific etch pitting consisting of nano pores and micropores and chemical deposition of a nickel-phosphorous protective layer (19) onto the etched base body surface.

A metal member has a region in which a dendritic layer is formed on a surface. The region has an arithmetic average roughness Ra of 20.0 μm or less.

Roll-to-roll fabrication of predetermined or ordered three-dimensional nanostructure arrays is described. Provided methods can comprise imprinting a substrate with a two-dimensional (2-D) pattern by rolling a cylindrical pattern comprising a 2-D array of structures against a substrate. In addition, control or determination of nanostructure parameters via control of process parameters is provided.

A method is disclosed for producing a plasmonic-nanostructure spectrally selective solar absorber having high solar absorptance, low thermal emittance, and superior thermal stability. The method includes the steps of providing an alloy structure containing a base metal and a copper alloying impurity, wherein copper has a weight percent concentration in the alloy of at least 0.25%; and applying an alkaline solution to a surface of the alloy structure to selectively dissolve base metal elements at the surface resulting in fabrication of sponge-like copper nanostructures on the surface configured to scatter, trap, and absorb light in solar wavelengths.

A method is disclosed for producing a plasmonic-nanostructure spectrally selective solar absorber having high solar absorptance, low thermal emittance, and superior thermal stability. The method includes the steps of providing an alloy structure containing a base metal and a copper alloying impurity, wherein copper has a weight percent concentration in the alloy of at least 0.25%; and applying an alkaline solution to a surface of the alloy structure to selectively dissolve base metal elements at the surface resulting in fabrication of sponge-like copper nanostructures on the surface configured to scatter, trap, and absorb light in solar wavelengths.

The present disclosure relates generally to the field of electroplating and electroless plating. More specifically, the present disclosure relates to plating solutions and plating removal/stripping solutions for stripping zinc/nickel alloy plating from substrates.