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RE40406 |
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter ...
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7029541 |
In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and s...
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6899770 |
A metal substrate is provided with a coating that (i) provides substantial corrosion resistance, (ii) makes it possible to shape the substrate by roll forming and similar light cold forming operations without the need for any oil or wax ...
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6887321 |
A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate...
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6849138 |
The surface of an aluminum alloy high-temperature processed article containing Mg is heated at a high temperature of 200° C. or above, thereafter the surface is etched with an aqueous solution containing a chelating agent, and then at l...
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6723177 |
A process for treating a chromium coating and/or the surface of a chromium alloy to increase hardness, and/or to decrease coefficient of friction; chromium alloys and/or chromium coatings with surfaces having increased hardness and/or de...
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6719852 |
A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises a silicon compound; trivalent chromium and oxalic acid in a molar ratio r...
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6677053 |
A surface-treated steel sheet includes a steel sheet, an Al—Zn-base alloy plating layer formed on the steel sheet, a chemical conversion film provided on the alloy plating layer, and a concentric layer of a Cr compound that is formed o...
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6656294 |
It is an object of the present invention to provide a processing method for preventing elution of lead in a lead-containing copper alloy to prevent lead from eluting from a faucet metal, etc. made of a lead-containing copper alloy, and a...
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6596097 |
A method for the immobilization of a radioactive anion on the surface of a metal substrate, said method comprising treating the substrate with an oxidizing agent in the presence of a solution of a radioactive anion which forms an insolub...
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6565671 |
The present invention relates to a surface-treated steel sheet coated with a chromate layer having excellent corrosion resistance, fuel resistance and seam weldability, and a chromate solution used for preparing the surface-treated steel...
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6508890 |
The present invention is drawn to a method of lowering the net resistivity of an interconnect by depositing a monomer layer upon an aluminum bonding pad, the treatment thereof to cross link the monomer to form an electrically conductive ...
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6503340 |
A method for producing chromium carbide coatings on steel provides a steel component having a surface which is carburized to contain at least about 0.40% by weight carbon and is followed by chromizing the surface to form a chromium carbi...
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6465114 |
A coated steel material excellent in corrosion resistance and a method of producing the same, wherein a coated steel material has on the surface of the steel sheet a Zn-alloy coating layer containing 1-10 wt % of Mg, 2-19 wt % of Al and ...
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6461449 |
Metal surfaces, particularly the zinciferous surfaces of zinc-coated steel, can be given a chromate conversion coating that is superior in terms of blackening resistance and white rust resistance by drying into place on the surfaces a la...
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6451130 |
A method for forming a chromium oxide film on the surface of a stainless steel sample. The method includes: (a) placing a sample having stainless a steel surface into a vacuum furnace, evacuating the vacuum furnace to a pressure of 2×10...
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6447620 |
A water-based surface-treating agent for metallic materials which gives a film highly satisfactory in corrosion resistance, blackening resistance, wet secondary adhesion to topcoatings, low-pollution characteristics (amount of fixed chro...
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6444054 |
Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. S...
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6387538 |
A surface-treated sheet for fuel tanks includes a cold-rolled steel sheet with a low carbon content, a zinc or zinc-based alloy plating layer formed on the steel sheet, and a chromate film coated on the zinc or zinc-based alloy plating l...
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6379750 |
A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in treating the metal surface ...
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6361622 |
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilograms of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter...
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6329067 |
In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing ag...
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6280535 |
A production method for a lead-containing hot-galvanized chromated steel sheet with excellent resistance to blackening and white rust formation comprises: (a) plating a steel sheet in a hot-galvanizing bath containing 0.05-0.3 wt. % lead...
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6221176 |
In one embodiment, the present invention relates to a flexible laminate, comprising a first flexible polymeric film; a copper layer having a microcracking prevention layer on at least one side the microcracking prevention layer sufficien...
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6206981 |
A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in conjunction with a chromati...
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6190464 |
In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing ag...
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6183880 |
This invention provides a composite foil comprising an aluminum carrier layer and an ultra-thin copper foil having a protective layer disposed between them comprising a porous copper layer and an interpenetrating zinc layer. A process fo...
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6183547 |
A composition for inhibiting corrosion of metal surfaces comprises permanganate and a very low concentration of chromium (VI). The concentration of chromium (VI) in the aqueous solution is less than about 100 micrograms per liter, and th...
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6143430 |
Surface treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability is provided. A steel sheet containing 0.0005-0.0040% of C, 0.005-0.020% of P, 0.0005-0.0040% of N, and 0.0005-0.0030% of B...
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6110262 |
Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. S...
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6039860 |
A method for chromium plating a part made of titanium or titanium alloy eliminates the conventional chemical cleaning of the part prior to electroplating, and instead employs a mechanical cleaning of the part including degreasing the par...
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5944918 |
An aluminum-alloy article such as a fastener is prepared by providing an aluminum-alloy article that is not in its final heat-treated state, and is preferably in its annealed state. A curable organic coating material is also provided. Th...
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5912050 |
An improved process for chromizing commercial quantities of small, industrial, ferrous-based parts, such as but not limited to threaded connectors, pins, bolts, nuts, washers, fasteners, fittings, couplings, studs, etc., uses a retort fi...
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5876517 |
Process for finishing zinc, zinc alloy or cadmium surfaces which consists in bringing the components to be treated into contact first with an acidic chromate-plating bath based on chromium, cobalt and silver salts and then with a top coa...
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5807442 |
A concentrated aqueous solution containing: (A) a component of dissolved phosphate ions; (B) a component of dissolved hexavalent chromium; (C) a component of dissolved anions selected from the group consisting of BF 4 - , AlF 6 ...
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5730809 |
A passivate for tungsten alloy electroplates. The passivate includes an effective quantity of CrO 3 in an aqueous bath having a pH of from about 3.5 to about 7.5.
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5707505 |
A method is described for the electrophoretic enamelling of chromatizable metal surfaces. Improved adhesion of the enamel is achieved by a chromating pretreatment of the metal surfaces, the chromated metal surfaces being kept wet from th...
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5628839 |
Components of apparatus for film making and method for manufacturing the same include components made from aluminum alloy or aluminum without or with uneven surface of unevenness size of up to several mm, which are immersed in any one of...
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5534082 |
Heating an aqueous mixture of a fluoroacid such as H 2 TiF 6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide...
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5456817 |
There is disclosed a treating process whereby the thermal oxidation resistance on the shiny side of a copper foil is enhanced so that the shiny side will not discolor on heating to higher temperatures than usual, without impairing the fo...
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5362333 |
Drying into place a covering of an aqueous solution of nickel and/or cobaltous sulfate and/or phosphate salts on a zinc or zinc alloy surface improves at least one of the blackening resistance and corrosion resistance after subsequent ch...
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5356490 |
Heating an aqueous mixture of a fluoroacid such as H 2 TiF 6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide...
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5318640 |
A nickel and/or cobalt deposition process which can be run at a nearly neutral pH and which rapidly deposits nickel and/or cobalt in quantities large enough to improve the paint adhesion and post coating corrosion resistance, and which h...
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5308709 |
A film forming process which imparts excellent formability, corrosion resistance and paintability to the surface of aluminum or aluminum alloy plates or aluminum-plated sheet steel. A process for forming composite film on the surface of ...
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5281282 |
Heating an aqueous mixture of a fluoroacid such as H 2 TiF 6 and an oxide, hydroxide, and/or carbonate such as silica produces a clear mixture with long term stability against settling of any solid phase, even when the oxide, hydroxide...
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5164235 |
A process for imparting tarnish resistance to copper and copper alloy materials, particularly copper foil. The material is first treated with an acidic chromium-containing solution to deposit chromium ions on said foil. Thereafter the ma...
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5110630 |
A method of producing a metal gasket includes steps of alkaline cleaning a metal plate, coating a non-rinse chemical for chromate conversion of surfaces of the metal plate and drying to form chromate films, coating an adhesive on the chr...
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5104463 |
A corrosion resistant stainless steel article is provided with a substantly uniform black oxide coating over the surface thereof, the article being formed from a steel alloy in martensitic structure which is treated in a boiling aqueous ...
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5052421 |
The invention is a metal treating process which uses a chrome-free deoxidizing bath. The process is useful for cleaning and deoxidizing aluminum substrates followed by conversion coating of the cleaned and deoxidized substrates.
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5022938 |
The present invention relates to compositions and methods for providing a corrosion-resistant coating on a zinc-cobalt alloy surface said surface with a hexavalent chromium-containing treatment solution. In a preferred embodiment, the so...
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