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7473324 |
Autodeposition of a coating containing an epoxy resin is accomplished over a metal substrate that has been coated with a zinc phosphate conversion coating without significant removal of the zinc phosphate conversion coating.
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7422629 |
Electrolysis using a suitable electrolyte provides a completely nonsludging zinc phosphate conversion coating process that produces a high quality conversion coating in a very short time. The suitable electrolyte contains at least water,...
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7402214 |
An aqueous composition for pretreating and depositing a coating on metal substrates is provided. The coating composition includes from about 1,500 to about 55,000 ppm based on the aqueous composition of a Group IIA dissolved metal ion, f...
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7208053 |
Metallic surfaces are coated with an aqueous, acidic phosphate solution containing 10 to 60 g/l zinc, 0.5 to 40 g/l manganese, 50 to 300 g/l phosphate ions calculated as P 2 O 5 , and optionally other components.
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6743303 |
A method for treating a micro-roughened metal surface to improve bonding between the metal surface and a polymer material. The method involves post-treating the micro-roughened conversion coated metal surface with an aqueous organo-silic...
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6733896 |
The present invention comprises a method for treating one or more multi-metal articles. The method comprises exposing the one or more articles to a first treatment composition capable of providing a conversion coating on steel- and zinc-...
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6679952 |
A method of coating aluminum and aluminum alloy substrates not only imparts a corrosion resistance comparable or even superior to that afforded by chromate treatment but also improves the adhesion to the coating film, while the luster of...
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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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6645316 |
A process for post-passivation of a phosphated metal surface, characterized in that the phosphated metal surface is treated with an aqueous post-passivation solution which contains from 50 to 500 mg/l of nickel ions and from 200 to 1500 ...
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6638370 |
By including nitric acid and hydroxylamine in a manganese phosphating composition and controlling the ratio of nitric to phosphoric acids and the ratio of Total Acid to Free Acid within a specified range, satisfactory manganese phosphate...
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6635122 |
Methods of making and using annealable insulated metal-based powder particles are provided. The insulated metal-based powder particles are formed from metal-based core particles that are coated with an annealable insulating material. The...
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6560845 |
A prefinished curved reflector suitable for use in recessed lighting, downlighting, head lamps, and tail lamps is made from metal sheet, preferably an aluminum alloy sheet. An outer surface of the metal sheet is either anodized, laminate...
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6478860 |
A highly effective and storage stable conditioning treatment for metal surfaces prior to phosphating them is a suspension in water containing solid miorosize particles of at least one phosphate of a divalent or trivalent metal and an acc...
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6395106 |
A conversion coating process that forms a stable and corrosion-resistant oxide layer on metal or metal oxide substrates or layers. Particularly, the conversion coating process involves contacting the metal or metal oxide substrate or lay...
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6395105 |
A process for phosphating metal surfaces in which a nitrite- and nickel-free zinc-containing phosphating solution is applied to the metal surfaces which, if desired, are then rinsed and subsequently after-rinsed with an aqueous solution ...
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6312821 |
The coating structure having a corrosion resistance of the invention contains a formation film formed on the surface of an aluminum alloy material. The formation film is subjected to a zirconium phosphate treatment. Because the zirconium...
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6284059 |
A process is disclosed in which hot rolled steel articles, such as rail car articles, LP tanks and barge articles are cleaned and conversion coated. The cleaning compositions comprise aqueous phosphoric acid, and the conversion coating c...
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6241830 |
The present invention relates to an anticorrosive treatment including following steps (1) contacting a metal to be treated with an aqueous solution containing one or more kinds of compounds containing phosphorus ions, (2) washing it if d...
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6231687 |
A phosphating solution that contains from 3 to 30 g/l of zinc ions, from 0.1 to 20 g/l of ferrous ions, from 5 to 60 g/l of phosphate ions, from 5 to 60 g/l of nitrate ions, and a source of hydroxylamine in a concentration corresponding ...
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6090224 |
A process for phosphating metal surfaces in which a nitrite- and nickel-free zinc-containing phosphating solution is applied to the metal surfaces which, if desired, are then rinsed and subsequently after-rinsed with an aqueous solution ...
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6027579 |
The invention provides a non-chrome rinse and method for treating a phosphate conversion-coated ferrous metal substrate. The rinse comprising zirconium ions, vanadium ions, fluoride ions, and phosphate ions in a ratio and a concentration...
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5985046 |
A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and th...
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5972433 |
Methods for treating metal substrates are disclosed. These methods, which comprise contacting the surface to be treated with a composition comprising a Mannich-derivatized polyether, improve the corrosion resistance and/or adhesion prope...
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5954893 |
A method for treating the surface or surfaces of an aluminium or aluminium alloy containing substrate to confer corrosion resistance in which a porous layer is created on the surface or surfaces and then the surface or surfaces are treat...
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5885373 |
A solution in water of fluorometallate and phosphate anions, divalent and/or trivalent metal cations, and polyhydroxylaminomethyl substituted polymers of vinyl phenol(s) provides an effective and economical post-rinse for conversion coat...
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5851371 |
The phenomenon of "mapping" (surface defects) after electrophoretic painting over phosphate conversion coatings passivated with hexavalent chromium containing passivating compositions can be avoided or reduced by keeping the surface bein...
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5766374 |
Process in which the said surface is pickled and then treated in two steps, a first treatment step of so-called "amorphous" phosphatization, suitable for depositing a coat of at least 0.2 g/m 2 , followed by a second treatment step calle...
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5672390 |
A process for forming a protective layer on a rigid surface, such as a metal or wood surface, to provide protection against abrasion, corrosion, heat and fire. The process comprises first preparing the surface of the article. On metal ar...
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5641542 |
A method of forming a protective coating on aluminum and aluminum alloy surfaces to improve adherence of siccative coatings such as inks, paints, and lacquers. The method involves rinsing acid treatments from aluminum surfaces followed b...
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5614585 |
A hydrophilic surface-treating aqueous solution and a hydrophilic surface-treating method are provided to form a film which can maintain its hydrophilicity. The hydrophilic surface-treating aqueous solution contains as main components po...
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5391240 |
The invention concerns a process for a passivating post-treatment of phosphated metal surfaces of iron, steel, galvanized steel, zinc, aluminum, and their alloys, in which the phosphated metal surfaces are brought into contact at tempera...
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5326408 |
An otherwise conventional Jernstedt salt dispersion for activating metal surfaces to improve the quality of subsequently deposited phosphate conversion coatings on the activated metal surface is stabilized against deterioration in storag...
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5324587 |
A laminate suitable for vehicular applications includes at least two sheets of aluminum alloy and an adhesive layer between the sheets bonding them together. An oxide layer on surfaces of the sheets is treated with a phosphorous acid ele...
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5294266 |
The invention is in a composition and process for the chromium free passivating postrinsing of conversion layers on metals before the application of a paint or adhesive. The conversion layers can be on the bases of phosphate layers, at l...
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5268078 |
This invention relates to Al plates suitable for automobile body panels and also relates to a method of pretreatment for painting. The features are: A Zn plating layer having 0.05.about.0.38 g/m 2 of coating weight is formed on the surf...
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5205874 |
A process for forming a protective barrier on metallic or wood surfaces to provide protection against abrasion, corrosion, heat, and fire. The process is begun by first forming a fixed surface on the metallic or wood article. On metallic...
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5128211 |
A final rinse for a phosphatized metal surface includes a phosphoric acid solution including aluminum chlorohydrate. The aluminum chlorohydrate solution is applied at a concentration of about 100 to about 1500 ppm at a pH of 3 to about 4...
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5106435 |
A method for minimizing surface carbide formation during box annealing of DQSK steels includes as a first step treating the surface of an aluminum-killed steel suitable for production of DQSK product with an aqueous solution containing a...
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5060406 |
A steam iron having an acid-resistant, hydrophilic coating in the steam chamber. The steam chamber coating is provided from an acid, colloidal suspension comprising alumina, magnesia, silica, or mixtures thereof, and contains, preferably...
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5026440 |
The adhesion of, and corrosion protection provided by, organic surface coatings to underlying metal can be significantly improved if the degreased, etched, and pickled metal surfaces to be coated are first treated with an aqueous solutio...
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5011738 |
A procedure for the application of PTFE-based, self-lubricating coating on a steel bearing element whose chrome and nickel contents are less than 5%, is disclosed. The procedure is characterized by a working process whereby the element u...
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4978500 |
An inhibitor composition of sodium hexametaphosphate and a water soluble orthophosphate, together with a pH adjusting, water-soluble alkali, effectively prevents corrosion of metal surfaces by sodium chloride brines. This corrosion inhib...
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4908075 |
An aqueous surface treatment composition for forming a hydrophilic coating comprising: (a) alkali metal silicate, (b) aminoalcohol, and (c) a water-soluble resin selected from the group consisting of a water-soluble nylon, a natural poly...
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4897129 |
A process for improving the corrosion resistance of an iron or steel part having a phosphate conversion coating, said method comprising contact of said part with a solution containing ions selected from the group of cobalt ions and nicke...
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4749417 |
A process for improving the corrosion resistance of an iron or steel part having a phosphate conversion coating, said method comprising contact of said part with a solution containing ions selected from the group of cobalt ions and nicke...
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4718482 |
A method for manufacturing a novel heat exchanging vehicle comprising the steps of forming an inorganic surface layer over a cold rolled, aluminum or aluminum alloy sheet; treating the inorganic surface layer with a phosphoric compound s...
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4673445 |
A process for improving the corrosion resistance of an iron or steel part having a phosphate conversion coating, said method comprising contact of said part with a solution containing ions selected from the group of cobalt ions and nicke...
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4656097 |
A method of treating phosphated metal surfaces to improve the corrosion-inhibiting properties of the metal surfaces and to improve the adhesion of siccative organic coatings thereto is described. The method comprises treating a phosphate...
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4497666 |
The invention relates to a composition and a process for the treatment, more precisely the "post-treatment" of phosphatized metal surfaces, particularly when the surfaces must be subsequently covered with a coat of paint. It relates also...
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4462842 |
An aluminum evaporator including a refrigerant tube and fins with a hydrophilic surface is prepared by forming a chemical coating over the surface of its components as assembled into a product or before fabrication, and thereafter formin...
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