Superconformally filling a recessed feature includes: contacting the recessed feature with superconformal filling composition that includes: Au(SO.sub.3).sub.2.sup.3 anions; SO.sub.3.sup.2 anions; and Bi.sup.3+ cations; convectively transporting Au(SO.sub.3).sub.2.sup.3 and Bi.sup.3+ to the bottom member of the recessed feature; subjecting the recessed feature to an electrical current to superconformally deposit gold from the Au(SO.sub.3).sub.2.sup.3 on the bottom member relative to the sidewall and the field, the electrical current providing a cathodic voltage; and increasing the electrical current subjected to the field and the recessed feature to maintain the cathodic voltage between 0.85 V and 1.00 V relative to the SSE during superconformally depositing gold on the substrate to superconformally fill the recessed feature of the article with gold as a superconformal filling of gold, the superconformal filling being void-free and seam-free.

A guide system for use in electro-processing a bore of a gun barrel includes a non-conductive external bore guide and a non-conductive internal bore guide. The external bore guide is an adapter that is configured to removably engage the outside of the gun barrel and includes a conduit formed therein. The conduit is disposed such that it is axially aligned with a bore of the gun barrel when the external bore guide is engaged with the gun barrel. The internal bore guide is elongated and includes an axial recess that is sized to seat an electro-processing electrode (an anode). A method for uniformly plating the bore includes moving an anode through the gun barrel at one or more rate(s) of travel to uniformly plate the bore is also disclosed. The plating is sufficiently uniform to conform to military specifications. The systems, methods, support structures, etc. described herein are particularly well-suited to plating small-bore gun barrels.

A guide system for use in electro-processing a bore of a gun barrel includes a non-conductive external bore guide and a non-conductive internal bore guide. The external bore guide is an adapter that is configured to removably engage the outside of the gun barrel and includes a conduit formed therein. The conduit is disposed such that it is axially aligned with a bore of the gun barrel when the external bore guide is engaged with the gun barrel. The internal bore guide is elongated and includes an axial recess that is sized to seat an electro-processing electrode (an anode). A method for uniformly plating the bore includes moving an anode through the gun barrel at one or more rate(s) of travel to uniformly plate the bore is also disclosed. The plating is sufficiently uniform to conform to military specifications. The systems, methods, support structures, etc. described herein are particularly well-suited to plating small-bore gun barrels.

Provided is a metal film forming apparatus capable of forming a uniform metal film on a surface of a substrate by uniformly pressurizing an electrolyte membrane against the surface of the substrate. The film forming apparatus includes first and second film forming units, a coupling portion that couples the first and second film forming units together, a pressure device including a pressure unit that pressurizes substrates with electrolyte membranes of the respective film forming units via the coupling portion, and a power supply unit adapted to apply a voltage across each anode and each substrate. The film forming units are coupled to the coupling portion via their respective first elastic bodies that elastically deform in the pressurization direction of the pressure unit.

The present invention relates to a plating apparatus and a plating method for partially forming a plating film on an object to be plated. The plating apparatus includes: a rotary electrode configured to be rotatable; a plating solution holding unit arranged to the rotary electrode and configured to hold a plating solution; and a power supply unit configured to apply a voltage between the portion to be plated and the rotary electrode.

The present invention relates to a plating apparatus and a plating method for partially forming a plating film on an object to be plated. The plating apparatus includes: a rotary electrode configured to be rotatable; a plating solution holding unit arranged to the rotary electrode and configured to hold a plating solution; and a power supply unit configured to apply a voltage between the portion to be plated and the rotary electrode.

Method and plant for continuous chrome plating of metal bars, tubular elements and similar, wherein the bar to be chromed is made move forward fastly in a device of chrome plating without of tank of chrome plating including a plurality of anodic cells of chrome plating with tubular-torx shape, into which an electrolytic solution flows with high density of current, for forming on the bar a multi-layer chromium plating while the bar moves forward through the anodes-cells themselves, and wherein the device is characterized in feeding the electrolytic solution with a flow axially distributed and with a circulation of the electrolyte in a turbulent flow, controlled through the anode of chrome plating, said plant including furthermore many cooling stations of the bar by a jet of liquid with cryoscopic thermal step, the sealing of the bath is guaranteed by gaskets in plastic material which are reinforced by armonic steel springs.

Method and plant for continuous chrome plating of metal bars, tubular elements and similar, wherein the bar to be chromed is made move forward fastly in a device of chrome plating without of tank of chrome plating including a plurality of anodic cells of chrome plating with tubular-torx shape, into which an electrolytic solution flows with high density of current, for forming on the bar a multi-layer chromium plating while the bar moves forward through the anodes-cells themselves, and wherein the device is characterized in feeding the electrolytic solution with a flow axially distributed and with a circulation of the electrolyte in a turbulent flow, controlled through the anode of chrome plating, said plant including furthermore many cooling stations of the bar by a jet of liquid with cryoscopic thermal step, the sealing of the bath is guaranteed by gaskets in plastic material which are reinforced by armonic steel springs.

The present invention provides a regulation plate and a plating apparatus equipped with the regulation plate which can curb reduction in in-plane uniformity due to influence of a terminal effect with respect to plural substrates differing in characteristics and processing conditions. One form of the present invention provides a regulation plate used to adjust an electric current between an anode and a substrate to be plated. The regulation plate includes a plate main body provided with an opening adapted to allow passage of an electric current; plural first blades used to narrow a diameter of the opening; and a first moving mechanism adapted to translate the plural first blades in a radial direction of the opening.

The present invention provides a regulation plate and a plating apparatus equipped with the regulation plate which can curb reduction in in-plane uniformity due to influence of a terminal effect with respect to plural substrates differing in characteristics and processing conditions. One form of the present invention provides a regulation plate used to adjust an electric current between an anode and a substrate to be plated. The regulation plate includes a plate main body provided with an opening adapted to allow passage of an electric current; plural first blades used to narrow a diameter of the opening; and a first moving mechanism adapted to translate the plural first blades in a radial direction of the opening.