Colored oxide coatings having multiple oxide layers are described. Processes for forming the multilayer oxide coating can include converting a portion of a metal substrate to a primary oxide layer, coloring the primary oxide layer, and depositing a secondary oxide layer on the primary oxide layer. The primary oxide layer and the secondary oxide layer can be at least partially transparent such that a texture of an underlying metal substrate surface is visible through the multilayer oxide coating. A top surface of the secondary oxide layer can be polished to a high gloss to give the multilayer oxide coating an appearance of depth.

Colored oxide coatings having multiple oxide layers are described. Processes for forming the multilayer oxide coating can include converting a portion of a metal substrate to a primary oxide layer, coloring the primary oxide layer, and depositing a secondary oxide layer on the primary oxide layer. The primary oxide layer and the secondary oxide layer can be at least partially transparent such that a texture of an underlying metal substrate surface is visible through the multilayer oxide coating. A top surface of the secondary oxide layer can be polished to a high gloss to give the multilayer oxide coating an appearance of depth.

A coated metal alloy substrate with at least one chamfered edge, a process for producing a coated metal alloy substrate, and an electronic device having a housing comprising a coated metal alloy substrate are described. The coated metal alloy substrate with at least 10 one chamfered edge comprises a water transfer print layer deposited on the metal alloy substrate, a passivation layer deposited on the at least one chamfered edge, and an electrophoretic deposition layer deposited on the passivation layer.

An alloy member includes a base material that includes a surface layer and is a magnesium-lithium alloy (Mg—Li alloy) having an α-phase and a β-phase, and an anticorrosive film is able to be formed on the surface layer. A degree of orientation in a (110) plane of the β-phase of the Mg—Li alloy is more than or equal to 70%. An average grain size of the Mg—Li alloy is less than or equal to 50 μm. A Li concentration of the surface layer is lower than a Li concentration of inside of the base material.

An alloy member includes a base material that includes a surface layer and is a magnesium-lithium alloy (Mg—Li alloy) having an α-phase and a β-phase, and an anticorrosive film is able to be formed on the surface layer. A degree of orientation in a (110) plane of the β-phase of the Mg—Li alloy is more than or equal to 70%. An average grain size of the Mg—Li alloy is less than or equal to 50 μm. A Li concentration of the surface layer is lower than a Li concentration of inside of the base material.

A biomedical implant (16, 18) is formed from magnesium (Mg) single crystal (10). The biomedical implant (16, 18) may be biodegradable. The biomedical implant (16, 18) may be post treated to control the mechanical properties and/or corrosion rate thereof said Mg single crystal (10) without changing the chemical composition thereof. A method of making a Mg single crystal (10) for biomedical applications includes filling a single crucible (12) with more than one chamber with polycrystalline Mg, melting at least a portion of said polycrystalline Mg, and forming more than one Mg single crystal (10) using directional solidification.

A biomedical implant (16, 18) is formed from magnesium (Mg) single crystal (10). The biomedical implant (16, 18) may be biodegradable. The biomedical implant (16, 18) may be post treated to control the mechanical properties and/or corrosion rate thereof said Mg single crystal (10) without changing the chemical composition thereof. A method of making a Mg single crystal (10) for biomedical applications includes filling a single crucible (12) with more than one chamber with polycrystalline Mg, melting at least a portion of said polycrystalline Mg, and forming more than one Mg single crystal (10) using directional solidification.

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 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.