The present disclosure is drawn to a multi-color electronic housing. The multi-color electronic housing can include a metal alloy having a first portion that can be milled, plasma-treated, and can include an electrodeposited colorant thereon. The metal alloy can further have a second portion that can be milled, plasma-treated, and can include second electrodeposited colorant thereon. The first electrodeposited colorant can provide a different coloration than the second electrodeposited colorant.

The present disclosure is drawn to covers for electronic devices. In one example, a cover for an electronic device can include an enclosure with a light metal substrate with an opening therethrough, and a first protective coating covering the light metal substrate. A second protective coating is on the first protective coating, and a chamfered edge is present along the opening where the chamfer cuts through the first protective coating and the second protective coating to expose the light metal substrate at the chamfered edge. In one example, a transparent passivation layer is included along the chamfered edge.

The present disclosure is drawn to covers for electronic devices. In one example, a cover for an electronic device can include a light metal substrate including a first surface. A first micro-arc oxidation layer may be on the first surface of the light metal substrate, the first micro-arc oxidation layer can include a cationic dye bonded to the first surface via an anionic inorganic bridging compound.

The application discloses examples of a device housing of an electronic device comprising a magnesium-alloy substrate. The device housing further comprising a treatment layer applied over the magnesium-alloy substrate and a metallic coating layer applied over the treatment layer to provide a metallic luster. Further, a paint coating layer is disposed over a first portion of the metallic coating layer. Further, a top coating layer is applied over the paint coating layer and a visible second portion of the metallic coating layer.

The invention relates to a biodegradable implant comprising a surface coated magnesium alloy or zinc alloy product, whereby the coating layer comprises oxides and/or phosphates of from rare-earth elements, Mg, Ca, Zn, Zr, Cu, Fe, Sr, Li, Mn or Ag wherein the coating is preferably generated by plasma electrolytically oxidation (PEO). The invention further comprises a method for preparing the coated magnesium or zinc alloy product of the implant.

A method for manufacturing a cover member for electronic devices according to certain embodiments of the present disclosure may comprise: a step for forming a magnesium plate; a step for performing primary CNC processing on the magnesium plate using a predetermined cutting oil; a step for performing a primary pretreatment on the magnesium plate using chromate or micro arc oxidation (MAO); a step for performing a primary surface-treatment on the magnesium plate by bake-coating or electrodeposition coating; a step for performing secondary CNC processing on a first region of the magnesium plate using an alcohol-containing cutting oil; a washing and drying step; a step for performing a secondary pretreatment for preventing oxidation on the first region; and a step for performing a secondary surface-treatment on the first region by bake-coating or electrodeposition coating.

The present disclosure is drawn to covers for electronic devices, methods of making the covers, and electronic devices. In one example, a cover for an electronic device comprising: a metal cover substrate; a micro-arc oxidation layer or a non-transparent passivation treatment layer on a surface of the metal cover substrate; an outmold decoration layer on the micro-arc oxidation layer or the non-transparent passivation treatment layer, a chamfered edge including a chamfer at an edge of the metal cover substrate, wherein the chamfer cuts through the micro-arc oxidation layer or the non-transparent passivation treatment layer and the outmold decoration layer to expose the metal cover substrate at the chamfered edge; a transparent passivation layer on the chamfered edge where the metal cover substrate is exposed; and a protective coating on the transparent passivation layer.

The present disclosure is drawn to covers for electronic devices. In one example, a cover for an electronic device can include an enclosure with a light metal substrate joined with an insert molding plastic part, and a protective treatment layer on the light metal substrate and the insert molding plastic part. A transparent primer coating on the protective treatment layer, and a paint coating on the transparent primer coating. A milled edge along the insert molding plastic part, wherein the milled edge cuts through the paint coating to expose the transparent primer coating.

A method of coating a plasma channel of a plasma source, comprises providing at least one electrolyte having one or more chelating agents therein, treating at least one surface to produce a processed surface, smoothing the surface of the processed surface with at least one post processing technique to produce at least one smoothed processed surface, and cleaning the smoothed surface.

An aluminum-based coating of a flat steel product is applied in a hot-dipping method and comprises a mass percentage of silicon within a given range. The coating for a flat steel product, in particular for press mold hardening components, offers a shortened required minimum oven dwell time and a sufficiently large processing window when heating in an oven. This is achieved in that the surface of the coating has a degree of absorption for thermal radiation ranging between 0.35 and 0.95 prior to an annealing treatment, where the degree of absorption relates to an oven temperature ranging from 880 to 950° C. during the austenitizing annealing treatment. The invention additionally relates to an improved method for producing a flat steel product with an aluminum-based coating, to an inexpensive method for producing press-hardened components from such flat steel products, and to a press-hardened component made of such flat steel products.