There is disclosed a method of forming a high luminosity inorganic coating on an aluminium or aluminium alloy article, wherein the article is immersed in an electrolyte and subjected to a plasma anodising process, wherein the coating has a luminosity L*≥80.0% and comprises at least 50 wt % gamma alumina. Also disclosed are inorganic coatings formed by the method, and aluminium or aluminium alloys coated by the method.

A coated metal alloy substrate, 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 comprises an electrolytic sealing layer on the metal alloy substrate, and an electrophoretic deposition layer deposited on the electrolytic sealing layer.

A chemical treatment process has been identified as a simple and effective means of improving the bonding of injection-molded polymer to titanium surfaces. This process forms an oxide layer on a titanium surface that includes a layered double hydroxide. The layered double hydroxide both raises the bond strength and minimizes air or water leakage. The process enables the use of titanium alloys with injection molded polymer structural bonds in strong, lightweight, and water-resistant enclosures for consumer electronics.

In one example, an electronic device housing may include a substrate, a micro-arc oxidation layer formed on a surface of the substrate, and an electroless plating layer formed on the micro-arc oxidation layer. Example electroless plating layer may be one of an electroless tin plating layer and an electroless silver plating layer. Further, the electronic device housing may include an electrophoretic deposition layer formed on the electroless plating layer.

An antibacterial three-dimensional porous bone implant material. The antibacterial three-dimensional porous bone implant material comprises: a three-dimensional porous bone implant material; and an in-situ growth film layer in-situ growing on the surface of the three-dimensional porous bone implant material, wherein the in-situ growth film layer comprises a functional substance and an antibacterial substance, and the antibacterial substance comprises any one or more of zinc ions, copper ions or silver ions. The in-situ growth film layer has an antibacterial effect. The macro pore size and the micro pore size of the antibacterial three-dimensional porous bone implant material coexist, micro pores in a micro-arc oxidation film layer on a porous wall can provide anchoring points for bone growth, and thus, the implant material in the early stage of implantation can have an antibacterial function and the biologically active functions of bone growth and bone induction.

The PEO grown metal-oxide coated electrocatalyst replaces the current carbon supported catalyst with a more robust and effective metal-oxide scaffold, which increases the lifetime and efficiency of fuel cells and electrolyzers. Using a novel method in catalyst ion and nanoparticle application to the electrocatalyst scaffold, we can increase the lifetime by reducing particle dissolution, resulting in longer acceptable efficiencies. The process also has lower infrastructure and upkeep costs to those currently employed, so savings can be passed on to the consumer.

A magnesium alloy/resin composite structure (106) including a magnesium alloy member (103) and a resin member (105) integrated to the magnesium alloy member (103) and made of a thermoplastic resin composition, in which the magnesium alloy member (103) surface to which the resin member (105) is not integrated is coated with a layer including a manganese atom, an oxygen atom, and a sulfur atom.

The patent application discloses a degradable composite with coatings. The light metal workpiece with enhanced surface protection may comprise a light metal matrix having an exposed surface; a light metal oxide ceramic layer formed in at least a portion of the exposed surface; and a non-transparent metal alloy layer directly on the light metal oxide ceramic layer.

Disclosed are a structural color variable photonic crystal composite material and a method of manufacturing the same, and more particularly, a photonic crystal composite material having various changes in color by external stimulation and controlling the color change, and a method of manufacturing the same. The structural color variable photonic crystal composite material includes a metal having a metal oxide layer formed on its surface, wherein the metal oxide layer includes a plurality of pores, and a variable material that swells and contracts within the pores by external stimulation.

The disclosed embodiments include a housing of a handheld mobile device. The housing includes a ceramic layer forming a continuous outermost surface of the handheld mobile device, and an antenna layer adjacent to the ceramic layer. The antenna layer including conductive elements formed from a metal injection molded substrate, and an antenna break formed of non-conductive material electrically separating the conductive elements to collectively form an antenna of the handheld mobile device that is hidden by the ceramic layer from an exterior view of the handheld mobile device.