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7029769 |
An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose hexa-coordinated ion radius, defined by Shannon, R....
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6835460 |
Excellent adhesion to subsequently applied paint or elastomer is obtained by coating a metal substrate with a phosphate conversion coating by contact with a liquid phosphating solution that contains zinc cations, phosphate anions, and at...
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6723178 |
A metal surface on which a phosphate conversion coating is to be formed and which has been surface conditioned by contact with a liquid surface conditioner composition that contains dispersed fine particles of solid phosphate of at least...
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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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6478885 |
When a phosphate ester or a dispersed wax is added to a conventional liquid phosphate conversion coating composition, the resulting phosphate coating formed on a metal substrate has a lower coefficient of friction after being oiled than ...
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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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6376092 |
The present invention has an object to provide a surface-treated steel sheet which has highly balanced corrosion resistance and formability, and satisfies fundamental properties required mainly for steel sheets for automobile body, and a...
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5976272 |
A process for phosphating metal surfaces by treatment with an acidic zinc- and phosphathe-containing solution which does not require rinsing. The metal substrate is contacted with a phosphating solution containing 2 to 25 g/l of zinc ion...
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5968240 |
A heat curable protective coating composition for providing barrier protection to a solid substrate. The coating composition comprises an aqueous solution of phosphate ions and nitrate ions and at least one species of metal ion having a ...
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5868874 |
A process for forming a zinc phosphate coating on an aluminum substrate is provided to obtain good coverage by the coating. The coating preferably has a columnar or nodular crystal morphology and a coating weight of at least about 150 mg...
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5525431 |
A zinc-base galvanized sheet steel which comprises zinc-base plated sheet steel and, formed on the plating layer surface, an inorganic covering layer which contains at least one inorganic oxide in an amount of 1-500 mg/m 2 in terms of t...
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5328526 |
A zinc phosphate coating film suitable for cationic electrodeposition coating and superior in both of coating film adhesion and corrosion resistance (especially, warm brine resistance and scab resistance) is formed by a conversion treatm...
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5268041 |
In a process of phosphating metal surfaces phosphating solutions are employed which are substantially free of nickel and contain TBL ______________________________________ 0.3 to 1.7 g/l Zn 0.2 to 4.0 g/l M...
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5203930 |
A process for forming phosphate coatings on metal surfaces is provided which comprises the steps of contacting said metal surface with an Fe(II)-containing phosphating solution comprising 0.4 to 30 g/l Zn 4 to 30 g/l P 2 O 5 5...
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5141576 |
A titanium composite material is disclosed which comprises a titanium or titanium alloy substrate, a base layer formed thereon of a calcium phosphate compound resulting from calcination of a hydrochloric or nitric acid aqueous solution o...
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4944813 |
The present invention relates to a process for phosphating metal surfaces, and more specifically of surfaces of iron, zinc, and aluminum and the alloys thereof as a pretreatment for cold working wherein the surfaces without previous acti...
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4849031 |
Disclosed is a process of producing phosphate coatings on surfaces which consist of aluminum or its alloys and of at least one of the materials steel and galcanized steel by spraying or by spraying and dipping. Uniform phosphate layers h...
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4717431 |
Nickel-free aqueous phosphating compositions containing zinc ions, cobalt ions, phosphate ions, and at least two additional cations; methods for using such composition, and products of the methods.
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4622078 |
The invention relates to a process for phosphatizing metal surfaces with an acidic phosphatizing solution containing zinc ions, calcium ions, phosphate ions and accelerators and, optionally, other additives, characterized in that, after ...
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4612060 |
A process for controlling the zinc or zinc and nickel content of a zinc phosphate conversion coating solution employs the addition of EDTA and titration with calcium ion using a calcium ion electrode. Preferably to a second sample is add...
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4264378 |
A chromium-free process for phosphatizing a metal surface provides for applying to the surface an aqueous acidic solution having pH 1.5 to 3.0 and containing phosphate; a metal cation of valence two or greater; molybdate, tungstate, vana...
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4140551 |
Microcrystalline zinc phosphate coatings and compositions for their formation are provided, which can be applied to metals at low temperatures, the coating compositions containing as principal ingredients a specific balance of calcium an...
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4110128 |
Solution and procedure for depositing a coating, comprising hydrated zinc pyrophosphate, on the surfaces of galvanized steel parts, to protect against corrosion in the presence of water. The aqueous solution contains, per liter of final ...
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4108690 |
A method is disclosed for producing a non-crystalline, light weight tightly adherent coating of calcium phosphate on ferrous metal surfaces. In this method, the ferrous metal surface is treated with a coating solution containing calcium ...
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3996072 |
A phosphate coating solution for forming coatings on a metal surface is contacted with an anion-exchanger loaded or contacted with nitrite ions, whereby the nitrate ions present in the coating solution are replaced by the nitrite ions. T...
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3852125 |
A magnesium article treated with an aqueous surface conversion treating composition prior to application of a painted or photoresist coating. The composition comprises a water solution of about 9.4 to about 19.5 grams per liter NH 4 + ...
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3784417 |
An aqueous composition for surface conversion treatment of magnesium and magnesium alloys prior to application of a painted or photoresist coating is described. The composition comprises a water solution of about 9.4 to about 19.5 grams ...
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3657023 |
Novel blackening compositions comprising a peroxydiphosphate compound and an alkali metal hydroxide are utilized to produce on copper surfaces a soft, velvet-black coating which can be mechanically rubbed to form a smooth, black finish. ...
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3615893 |
To assist the tendency of forming a natural anticorrosive protection rust layer on the surface of weather proof steel, the surface of steel is treated with a solution of phosphate containing from 0.05 to 1 mole of at least two members se...
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3288655 |
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3218200 |
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3178320 |
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3161549 |
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3144360 |
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3104177 |
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3090709 |
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3015593 |
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2979430 |
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2884351 |
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2597406 |
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2499261 |
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2357269 |
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2351605 |
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2337856 |
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2316811 |
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2137370 |
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2005780 |
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2001754 |
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1980518 |
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