A system and a process for continuously electrolytically coating a light metal coil is provided. The system includes a bath containing a precursor for an electroceramic coating on a light metal coil and containing a cathodic connection, at least one motor connected to at least one motive assembly to impart movement to the coil. A power source provides voltage and current to the coil through the electrification device, and through the coil in the bath to the cathode connection via the aqueous electrolytic solution. The process includes electrifying bare coil with a voltage and a current, passing the electrified bare light metal coil through a bath having a cathodic connection and containing an aqueous solution with a precursor for an electroceramic coating, and electrochemically reacting the light metal coil with the precursor thereby generating a coated light metal coil having an electroceramic coating on at least one surface.

An aluminum or aluminum alloy metal electrical conductor having a high temperature resistant electrically insulating metal oxide coating layer including at least one non-aluminum metal oxide chemically bonded thereto and methods of making and using same

A cable for power distribution applications includes a plurality of wires bundled into the cable. The plurality of wires typically is comprised of interior wires and peripheral wires with the peripheral wires surrounding the interior wires. At least one wire is coated with a high emissivity coating that includes at least 10 weight percent aluminum oxide and a metal oxide other than aluminum oxide. Characteristically, the wire coated with the high emissivity coating has an emissivity greater than about 0.5 in the infrared region of the electromagnetic spectrum and a surface area at least 50 times greater than the surface area of a bare wire prior to being coated with the high emissivity coating.

A system and a process for continuously electrolytically coating a wire, useful for a high tension cable, is provided. The system includes a bath containing a precursor for an electro-ceramic coating on a wire and containing a cathodic connection, at least one motor connected to at least one motive assembly to impart movement to the wire. A power source provides 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 process includes electrifying bare wire with a high voltage and a high current, passing the electrified bare wire through a bath having a cathodic connection and containing an aqueous solution with a precursor for an electro-ceramic coating, and electrochemically reacting the wire with the precursor thereby generating a coated wire having an electro-ceramic coating on at least one surface.

A system and a process for continuously electrolytically coating a wire, useful for a high tension cable, is provided. The system includes a bath containing a precursor for an electro-ceramic coating on a wire and containing a cathodic connection, at least one motor connected to at least one motive assembly to impart movement to the wire. A power source provides 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 process includes electrifying bare wire with a high voltage and a high current, passing the electrified bare wire through a bath having a cathodic connection and containing an aqueous solution with a precursor for an electro-ceramic coating, and electrochemically reacting the wire with the precursor thereby generating a coated wire having an electro-ceramic coating on at least one surface.

A coating process for electrical steel sheets using a varnish composition includes: a) applying a varnish composition coating layer onto the surface of an electrical steel sheet. The varnish composition comprises (A) about 1 to about 95 wt % of a resin comprising nucleophilic groups chosen from OH, NHR, SH, carboxylate and CH-acidic groups, and electrophilic groups which can react with the nucleophilic groups, wherein the resin is capable of transacylation in its main chain and/or side chain(s), (B) about 5 to about 75 wt % of an organic solvent and/or water, (C) 0 to about 40 wt % of a resin different from (A), (D) 0 to about 10 wt % of a customary additive, (E) 0 to about 40 wt % of a pigment, filler and/or nano-scaled particle and/or monomeric and/or polymeric element-organic compound, wherein the wt % is based on the total weight of the varnish composition; b) curing the applied coating layer.

A coating process for electrical steel sheets using a varnish composition includes: a) applying a varnish composition coating layer onto the surface of an electrical steel sheet. The varnish composition comprises (A) about 1 to about 95 wt % of a resin comprising nucleophilic groups chosen from OH, NHR, SH, carboxylate and CH-acidic groups, and electrophilic groups which can react with the nucleophilic groups, wherein the resin is capable of transacylation in its main chain and/or side chain(s), (B) about 5 to about 75 wt % of an organic solvent and/or water, (C) 0 to about 40 wt % of a resin different from (A), (D) 0 to about 10 wt % of a customary additive, (E) 0 to about 40 wt % of a pigment, filler and/or nano-scaled particle and/or monomeric and/or polymeric element-organic compound, wherein the wt % is based on the total weight of the varnish composition; b) curing the applied coating layer.

A graphene coated silver alloy wire is provided. The composite wire includes a core wire and one to three layers of graphene covering surfaces of the core wire. The core wire is made of a silver-based alloy including 2 to 6 weight percent of palladium. The core wire may be optionally added with 0.01 to 10 weight percent of gold. The invention also includes a manufacturing method immersing the core wire into a solution including graphene oxide and applying bias to the core wire for manufacturing the graphene coated silver alloy wire.

A graphene coated silver alloy wire is provided. The composite wire includes a core wire and one to three layers of graphene covering surfaces of the core wire. The core wire is made of a silver-based alloy including 2 to 6 weight percent of palladium. The core wire may be optionally added with 0.01 to 10 weight percent of gold. The invention also includes a manufacturing method immersing the core wire into a solution including graphene oxide and applying bias to the core wire for manufacturing the graphene coated silver alloy wire.

An insulated copper wire is an insulated copper wire having a copper wire and an insulating film coating a surface of the copper wire, in which the insulating film contains a polymer material having an amide bond, on a peeled surface formed on a surface of the insulated copper wire by peeling off the insulating film, there more copper atoms bonded to a nitrogen atom or a carbon atom than copper atoms bonded to an oxygen atom, an oxygen-containing layer containing 10 atom % or more of oxygen in a depth direction from the peeled surface is formed, and a film thickness of the oxygen-containing layer is in a range of 2 nm or more and 30 nm or less. An electric coil is formed by winding the above-described insulated copper wire.