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7235165 |
Electroplating solution and method for electroplating
An electroplating solution may be formulated as an aqueous solution of oxalic acid, trisodium phosphate and ammonium sulfate. Such solutions may be used for both brush plating and bath plating, and...
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6811671 |
Method of controlling zinc-doping in a copper-zinc alloy thin film electroplated on a copper surface and a semiconductor device thereby formed
A method of fabricating a semiconductor device, having a reduced-oxygen Cu—Zn alloy thin film ( 30 ) electroplated on a Cu surface ( 20 ) by electroplating, using an electroplating apparatus, the...
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6582582 |
Electroplating composition and process
An electroplating bath is disclosed that is particularly suited to the electrodeposition of tin, zinc and alloys of the foregoing in a smooth and bright electrodeposit. The disclosed electroplating...
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6562220 |
Metal alloy sulfate electroplating baths
The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfate electroplating baths...
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6497806 |
Method of producing a roughening-treated copper foil
A method of producing a roughening-treated copper foil, comprising (A) a copper foil, (B) a composite metal layer, which is formed on a bonding surface of the copper foil and comprises (I) copper,...
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6319387 |
Copper alloy electroplating bath for microelectronic applications
A metallized structure for use in a microelectronic circuit is set forth. The metallized structure comprises a dielectric layer, an ultra-thin film bonding layer disposed exterior to the dielectric...
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6248228 |
Metal alloy halide electroplating baths
The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy halide electroplating baths has...
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6183545 |
Aqueous solutions for obtaining metals by reductive deposition
An aqueous solution for the reductive deposition of metals comprising, besides water, (A) a phosphine of the general formula (1) ##STR1## in which R 1 , R 2 , and R 3 denote lower alkyl...
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5906725 |
Method for preparing nickel-zinc-copper or nickel-zinc alloy electroplating solutions from zinc-containing waste articles having a nickel/copper electroplating layer
A zinc-containing waste article is recycled by a method in which the zinc of the waste article is recovered in a molten state while the unmolten nickel/copper electroplating layer of the waste...
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5888373 |
Method for repairing nickel-zinc-copper or nickel-zinc alloy electroplating solutions from acidic waste solutions containing nickel and zinc ions and electroplating thereof
A method for preparing a nickel-zinc-copper or nickel-zinc alloy electroplating solution from at least one electroplating waste solution and/or at least one acidic leach solution of metal scrap...
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5762778 |
Non-cyanide brass plating bath and a method of making metallic foil having a brass layer using the non-cyanide brass plating bath
The present invention provides a non-cyanide brass plating bath composition containing copper, zinc, metal polyphosphate, and orthophosphate, with the proviso that the composition does not contain...
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5726075 |
Method for fabricating microbump interconnect for bare semiconductor dice
A method for forming an interconnect for a bare semiconductor is provided. The interconnect includes an insulating film with a pattern of conductors and microbumps adapted to make an electrical...
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5534128 |
Non-cyanide copper-zinc electroplating bath, method of surface treatment of copper foil for printed wiring board using the same and copper foil for printed wiring board
A copper foil for a printed wiring board which has a carbon-containing copper-zinc coating comprising 40 to 90 atomic % of copper, 5 to 50 atomic % of zinc and 0.1 to 20 atomic % of carbon is...
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5494565 |
Method of producing workpieces of non-corrosion-resistant metals with wear-resistant coatings and articles
Workpieces of non-corrosion-resistant metals are provided with a wear-resistant, non-metallic layer of a nitride, carbide, boride, oxide or silicide of an element of the fourth to the sixth...
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5277789 |
Metal, metal alloy, and metal oxide formation by electrodeposition of polymetalllic complexes
A novel method for making metals and homogeneous metal alloys comprises the steps of (a) providing a polymetallic complex of the general formula (μ 4 -0)L 4 M'M"M'"M""X n wherein L is a ligand...
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5207889 |
Method of producing treated copper foil, products thereof and electrolyte useful in such method
An improved treatment for copper foil comprising electrodepositing a metallic barrier layer of copper, zinc and antimony on at least one side of the foil which, preferably, has a matte surface...
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4952249 |
Intermediate coating of steel wire
After a last patenting operation at a first diameter d 1 a steel wire is (a) drawn by means of a lubricant to an intermediate work hardened state at an intermediate diameter d 2 , (b) coated at...
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4916098 |
Process and apparatus for manufacturing an electrocatalytic electrode
A process and an apparatus for manufacturing electrocatalytic electrodes. The process comprises the steps of immersing a substrate in a plating bath containing metal ions and electrocatalytic...
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4869971 |
Multilayer pulsed-current electrodeposition process
A process for electrodepositing a multilayer deposit on an electrically-conductive substrate from a single electrodeposition bath yields a deposit which includes a sequence of essentially repeating...
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4859289 |
Process for producing a metal wire useful as rubber product reinforcement
A process for producing a metal wire for use as a reinforcement of rubber products, in which the step of drawing a steel wire is preceded by a preliminary treatment that includes the step of...
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4820388 |
Polyalkylene glycol naphthyl-3-sulfopropyl diether compounds and their salts, process for preparing same and electroplating baths containing same
Novel Polyalkylenglycol naphthyl-3-sulfopropyl diethers and salts thereof of the formula ##STR1## (R 1 -R 3 =H, C p H 2p --1 ; p=l--4, A=(PO) m --(EO) n --, (EO) n --(PO) m ,--(EO) n ...
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4814049 |
Plating bath composition for copper-tin-zinc alloy
An alkaline, cyanide, aqueous electroplating composition of copper, tin, and zinc includes a small amount of nickel to enhance the inclusion of tin in the copper-tin-zinc plate deposited from the...
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4725340 |
Tartrate-containing alloy bath for electroplating brass on steel wires and procedure for employing the same
Tartrate-containing alloy bath for electroplating brass on steel wires which are particularly designed for use in the production of radial tires, and the employment of said alloy bath in a...
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4687557 |
Gold alloys and galvanic bath for the electrolytic deposit thereof
A galvanic bath for the electrolytic deposit of gold-based alloys contains a cyanide complex of gold, a cyanide complex of copper, a cyanide complex of cadmium and a cyanide complex of zinc, and at...
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4496438 |
Bath composition and method for copper-tin-zinc alloy electroplating
An alkaline, cyanide, aqueous electroplating composition of copper, tin, and zinc includes a small amount of nickel to enhance the inclusion of tin in the copper-tin-zinc plate deposited from the...
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4417956 |
Alkaline plating baths and electroplating process
Cyanide-free plating baths for the electrodeposition of copper and zinc alloys comprise aqueous alkaline mixtures which contain copper and zinc ions and a chelating agent selected from...
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4379738 |
Electroplating zinc
An electroplating process is described for plating various metals and alloys in which certain organic substances are added to the plating solution. This permits high plating rates with excellent...
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4377449 |
Electrolytic silver plating
A silver electroplating bath comprising heterocyclic organic additives such as lactones, lactams, cyclic sulfate esters, cyclic imides and cyclic oxazolinones, preferably phenolphthalein.
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4377448 |
Electrolytic gold plating
A gold electroplating bath comprising heterocyclic organic compounds such as lactones, lactams, cyclic sulfate esters, cyclic imides and cyclic oxazolinones.
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4364804 |
Bath for the galvanoplastic deposition of a yellow-gold tinted metallic alloy
A bath for the galvanoplastic deposition of a yellow-gold tinted metallic alloy on a nickel-plated, stainless steel or brass support contains copper, zinc and lead salts, an alkaline metal stannate...
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4358351 |
Alkaline bath for the electrolytic deposition of low carat yellow colored gold alloy layers
For the production of low carat rose to gold colored gold alloy coatings there are needed electrolytic baths containing soluble gold cyanide, soluble copper cyanide, potassium carbonate or...
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4310392 |
Electrolytic plating
The electroplating of various metals such as zinc, copper, cadmium, chromium, nickel cobalt, gold, silver, palladium, platinum, ruthenium and alloys of such metals takes place from electrolytes...
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4157941 |
Method of adherency of electrodeposits on light weight metals
A plated aluminum product, and the method of making such product is disclosed for use in automotive bumpers. A plated outer decorative coating is used and is preferably constituted of chromium...
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4104138 |
Brass plating
The novel process of this invention for electroplating a bright brass onto basis metal comprises passing current from an anode to a basis metal cathode through an aqueous alkaline cyanide plating...
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4042470 |
Brass plating
This invention relates to a composition and process for electrodepositing semi-bright to bright brass from an aqueous alkaline cyanide electroplating solution containing at least one copper...
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4036206 |
Selective solar energy absorption
Superior solar energy absorption selectivity is found with blackened white brass electroplated surfaces in which the white brass contains 0.5 to 20% by weight copper, balanced zinc, which has been...
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4035246 |
Method and compositions for electroplating copper and brass
An improved method of plating a workpiece with brass or copper which involves first applying an aqueous solution containing Rochelle salt, an alkali metal carbonate, and a surfactant to the...
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3980533 |
Brass plating
The present invention relates to the electrodeposition of brass in a form suitable for use as undercoats for subsequently applied metal coatings, and to electrolytes suitable therefor, comprising a...
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3980532 |
Deposition of brass by electroplating
The present invention relates to the electrodeposition of brass in a form suitable for use as undercoats for subsequently applied metal coatings, and to electrolytes suitable therefor, comprising a...
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3930965 |
Zinc-copper alloy electroplating baths
The present invention relates to additives for electroplating baths used for the electrodeposition of zinc-copper alloys, and particularly to such alloys designed to be used as undercoats for...
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3904493 |
Gold sulfite baths containing organophosphorus compounds
Disclosed is an improved gold-sulfite bath for plating gold and gold alloy deposits. By the inclusion in the bath of small amounts of certain organic phosphorus compounds, the quality of the...
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3878066 |
Bath for galvanic deposition of gold and gold alloys
Galvanic baths are provided for the deposition of gold or gold alloy coatings, such baths containing in combination aldehyde and nitrogen compounds with arsenic compounds.
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3833486 |
CYANIDE-FREE ELECTROPLATING
Improved cyanide-free aqueous electroplating baths for plating metals, the baths containing water soluble phosphonate chelating agents combined with at least one chelatable metal ion and containing...
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3772167 |
ELECTRODEPOSITION OF METALS
The specification discloses an improved method and an improved electrolyte solution for providing a metal coating on a metallic substrate. The metal coatings are provided by electrodeposition from...
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3706635 |
ELECTROCHEMICAL COMPOSITIONS AND PROCESSES
An electrically conductive medium for the electrodeposition of metals is described which comprises an aqueous solution of a composition comprising (1) a complex consisting of a metal ion and an...
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3620937 |
METHOD AND ELECTROLYTE FOR ELECTROPLATING BRASS
An electrolyte and process for electrodeposition of brass from an aqueous alkaline cyanide bath containing zinc cyanide, copper cyanide and an additive of cyclohexanone resulting in a uniform color...
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3607683 |
BRASS PLATING BATH AND BRIGHTENER COMPOSITION THEREFOR
An additive for a brass electroplating bath which comprises (1) an amine such as diethylene diamine; (2) cyanoethyl glycine or cyanoethyl sucrose; (3) sodium or potassium hydroxide; (4) a compound...
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3502554 |
METHOD FOR FORMING THIN FILMS
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3440152 |
METHOD AND ELECTROLYTE FOR ELECTROPLATING BRASS
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3298937 |
Electroplating baths and processes
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