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6176999 |
Feedback controlled stripping of airfoils
A process for electrochemically stripping a coating from an airfoil that includes immersing the airfoil in the electrochemical acid bath for a sufficient period of time to remove the coating from...
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5997719 |
Electrochemical process for refining platinum group metals with ammonium chloride electrocyte
A process for purifying and refining platinum group metals such as platinum, iridium, palladium, rhodium and the like by an electrochemical process using ammonium chloride as the electrolyte to...
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5900135 |
Method of producing components on a metal film basis
A method of producing components, which include a metal film on a carrier, comprises the following steps: applying a metal film to a first carrier; structuring the metal film; reducing an adherence...
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5858200 |
Method of and apparatus for manufacturing metallic fiber and the twine of metallic fibers, and method of coloring metallic fiber and the twine of metallic fibers
A method of manufacturing a metallic fiber in which from a convergent extended wire, which is formed by a metallic fiber and a matrix member which is formed of a metallic material and whose...
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5783062 |
Process for the treatment, by an electrochemical route, of compositions containing precious metals with a view to their recovery
The invention relates to a process of treatment for the recovery of the precious metals, such as platinum, rhodium and palladium, contained in various compositions including a layer of oxide(s)...
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5368704 |
Micro-electrochemical valves and method
A micromachined valve and valve array having one or more pores which are electrochemically opened and closed by dissolving and redepositing a barrier layer across a tiny opening or pore in...
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RE34227 |
Non-cyanide electrode cleaning process
An electrolytic process employing a water solution of metal lactates or lactic acid and metal hydroxides, rapidly and safely removes metal plating bleed, residual oxides or the like (stains),...
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5152878 |
Method for electrochemical cleaning of metal residue on molybdenum masks
An electrochemical method for selective removal of the metallic residual stain which forms on molybdenum masks during processing of integrated circuits. The method forms an electrolytic cell which...
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5098534 |
Composition and method for electrolytically stripping silver
A composition comprising succinimide and/or phthalimide and an alkali metal hydroxide is effective for electrolytically stripping silver. Unnecessary silver coating portions can be electrolytically...
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4977038 |
Micro- and nano-porous metallic structures
Micro- and nano-porous metal structures including an alloy of one or more noble metals and substantially uniform and interconnected porosity in pore sizes ranging from three nanometers to 10...
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4775452 |
Process for dissolution and recovery of noble metals
Disclosed herein is a process for dissolving and recovering noble metals form used catalysts. Noble metal components are leached out from particles supporting or containing at least one noble metal...
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4606797 |
Method for recovery of high grade gold alloy from karat gold-clad base metal substrates
A method for recovering high grade gold alloy in an unoxidized condition from karat gold clad to a base metal substrate without significant oxidation of the substrate, wherein the substrate is...
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4539087 |
Method for electrolytic removal of galvanic nickel, chromium or gold layers from the surface of a copper or copper alloy base and apparatus for carrying out the method
A method for electrolytic removal of a galvanic nickel, chromium or gold layer from a metal base of copper or copper alloy, which is carried out in a bath comprising sulphuric acid and phosphorous...
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4246083 |
Removal of surface material
The removal of a metal or alloy from the surface of a body, in particular turbine blades, by forming close to as in contact with the surface a one or more other metal or metals which will alloy...
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4142954 |
Electrolytic cleaning of a shrouded blade assembly
Electrolytic process and apparatus employs the shroud and depending blades as anodes about a multi-cathode device in a bond material solutionizing electrolyte for obtaining proper contour...
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4090935 |
Process for recovering silver, copper and stainless steel from silver brazed stainless steel sections
An electrolytic refining process for recovering silver, copper and stainless steel from stainless steel honey comb sections from military aircraft brazed with a silver based brazing compound, the...
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3992288 |
Method of separating articles having different specific gravities
Articles having a first specific gravity may be separated from articles having a second specific gravity by placing said articles in an environment having a specific gravity between the specific...
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RE28849 |
Surface preparation process for recoating of used coated metallic electrodes
A surface preparation process for use in recoating of used metallic electrodes coated with one or more platinum group metals, one or more iron group metals, or chemical compounds thereof, which...
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3912603 |
Electrolytic bath for the removal of metals
Electrolytic bath for removing metallic coatings, such as nickel, chromium, zinc, tin, copper, cadmium or silver plate, from steel parts. The bath contains, in aqueous solution, nitric acid and/or...
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3900375 |
Electrolytic separation of metals
A process for separating a first metal from a composite metal body in which said first metal is adhered as an external layer over a substrate constituted by a second metal. The body is immersed in...
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3886055 |
Electrolytic separation of metals
A process for separating silver, gold or a silver/gold alloy from a composite metal body in which the silver, gold or alloy is adhered as an external layer over a ferritic or austenitic stainless...
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3819494 |
METHOD OF REMOVING BRAZE
A method of removing a gold alloy braze having palladium or niobium in combination therewith, wherein the braze is first treated with an aqueous solution of an alkali cyanide and a...
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3793172 |
PROCESSES AND BATHS FOR ELECTRO-STRIPPING PLATED METAL DEPOSITS FROM ARTICLES
An electrolytic stripping bath and process that are ideally suited for stripping a large number of different types of plated metal deposits, singularly, in selective combinations, or in the form of...
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3663388 |
GOLD REMOVAL PROCESS
A process for removing gold from a gold-coated substrate is disclosed. The gold-coated substrate is submerged in an electrolytically conductive solution. An electrode is also placed in the solution...
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3619390 |
AQUEOUS ELECTROLYTIC STRIPPING BATH TO REMOVE METAL COATINGS FROM BASES OF STEEL
An aqueous electrolytic stripping bath to remove metal coatings from stainless and nitrided or hardened steel comprising ammonium nitrate buffered to a critical pH range between about 5.0 and 6.8,...
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3617456 |
BATH FOR THE ELECTROLYTIC STRIPPING OF GALVANIC COATINGS MADE OF NICKEL, CHROMIUM OR GOLD FROM BASE BODIES MADE OF COPPER, COPPER ALLOYS, SILVER, ZINC OR TITANIUM
An aqueous electrolytic-stripping bath to remove nickel, chromium, or gold coatings from copper, copper alloy, silver, zinc, or titanium metal articles comprising ammonium thiocyanate as the...
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2797194 |
Method of electrolytically recovering precious metals from other metal bases
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