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7468106 |
The present invention provides a method for removing niobium-rich second-phase-particle (SPP) deposits from zirconium-niobium alloy components. The method comprises washing a freshly pickled and rinsed zirconium-niobium alloy component w...
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7341677 |
A non-carcinogenic corrosion inhibiting additive includes an anodic corrosion inhibitor and/or a cathodic corrosion inhibitor and a solubility enhancer for the inhibitors in the form of a metal complexing agent.
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7048807 |
A cerium-based coating for corrosion resistance is applied by exposing a cleaned aluminum-based component to a corrosion-inhibiting cerium solution containing cerium ions in the presence of an oxidizing agent. The coating deposits sponta...
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7030183 |
A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per liter, 2–60 g Zn, 40–300 g caustic alk...
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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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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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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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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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6569264 |
The present invention provides a corrosion inhibitor composition for magnesium or magnesium alloys which contains as an effective component, at least one compound selected from among aromatic carboxylic acids and salts thereof as an effe...
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6562148 |
In a method for the pretreatment of work pieces having a surface made of aluminium or aluminium alloys, for non-cutting shaping and/or the connection by welding or gluing to work pieces as well as for a subsequent permanent corrosion-pre...
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6554916 |
A treatment method for hydrophilicity for a heat exchanger which can maintain the deodorizing property and hydrohilicity even after a long-time use, and a heat exchanger thus treated for hydrophilicity by said method are provided. After ...
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6551417 |
Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings f...
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6497772 |
An article is protected with a wear-resistant coating. The wear-coated article is thereafter treated to produce a chemical conversion coating on any portions of the surface of the article accessible through micropores in the wear-resista...
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6428630 |
A method of coating a substrate is provided. A metallic layer comprising at least about 8% nickel is deposited by thermal spraying on a substrate. The metallic layer has an average density greater than about 80%. A slurry layer comprisin...
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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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6361623 |
A high quality lubricant carrier for lubrication in cold plastic working of iron and steel is provided by a process in which the surfaces of objects to be worked are first treated with a surface conditioning liquid composition that conta...
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6294262 |
Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO 3 and an inorganic acid with phosphorous acid as a reducing a...
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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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6280528 |
An improved method and/or process for preparing and handling formulations useful in metal treatment baths which includes packaging formulations useful in preparing and/or replenishing aqueous-based baths in water soluble pouches or conta...
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6214132 |
A pretreatment before phosphating conversion coating is effected by contacting a metal substrate to be coated with a pretreatment composition that has a pH from 4 to 13 and contains dispersed fine particle size alkali metal or ammonium s...
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5942339 |
This invention describes the coating of a nickel-phosphorous bond on steel sheets or pipes of common carbon steel with the aim of forming an Fe--Ni--P bond, using a process of diffusion and enabling the resistance of the exhaust gases to...
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5942052 |
A surface treatment aqueous solution is provided which is superior in corrosion resistance and coating adhesiveness as well as in ability of inhibiting the production of precipitate. A tinned DI can, which has been degreased, is conversi...
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5919519 |
A method of treating a potable water supply component, for example a pipe, pipe coupling or tap body, made of a leaded copper-based alloy such as a brass or gun metal, in order to inhibit the leach out of lead from the alloy by potable w...
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5908512 |
The present invention provides a highly durable surface-conditioning agent for use in a pretreatment step for a phosphate coating treatment of metallic materials, which is an aqueous solution comprising 1 to 50 ppm of titanium ion, 50 to...
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5868873 |
Disclosed is a composition for the pre-rinsing of a metal surface prior to phosphating, a method for preparing the composition, and a method for using the composition to pre-condition the metal surface. The composition is an aqueous susp...
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5776265 |
The invention is a process for applying a phosphate coating to a metal substrate in which the metal substrate is contacted with an aqueous activating bath before the phosphate coating is applied. The improved process is obtained by apply...
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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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5628838 |
Concentrate for activating and refining bath employed in processes of zinc phosphatization, characterized by the fact that it is based on an aqueous dispersion containing from 2 to 20% by weight of Jernstedt salts, the concentration of t...
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5584946 |
The invention concerns a method of pretreating aluminum or aluminum alloy surfaces before application of a permanent corrosion-protective conversion coating treatment, in particular before phosphating in acidic phosphating baths containi...
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5494504 |
The present invention relates to an improved titanium containing phosphate composition and a process for preparing the titanium containing phosphate composition. The composition in the form of a dilute aqueous dispersion is useful as a r...
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5449415 |
A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprisi...
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5427632 |
A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprisi...
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5389161 |
After preliminary treatment of their surfaces, the parts are brought into contact within a solution containing, essentially, protons, phosphate anions and cations chosen from Ca 2 +, Sn 2 + and Mn 2 +. The preliminary treatment results i...
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5373986 |
A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together by fibrillated polytetrafluoroethylene. ...
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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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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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5160551 |
The activating agent which is based on titanium(IV) phosphate and intended for use in the activation of metal surfaces before a zinc phosphating treatment contains one or more copper compounds and has a Ti:Cu weight ratio of 1:100 to 60:...
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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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5135583 |
For phosphating metal surfaces which consist at least in part of aluminum, by means of phosphating solutions which contain zinc, phosphate and fluoride, any titanium which has entered the phosphating solution and would disturb the format...
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5129965 |
A method of producing grain oriented silicon steel sheets each having a low watt loss, at an inexpensive cost and a high operational efficiency, wherein surfaces of each silicon steel sheet are given a mirror surface is disclosed. After ...
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5112414 |
Effective, titanium-free agents for activating metal surfaces prior to phosphating these surfaces with phosphating baths containing zinc ions can be made by reacting alkali metal phosphates with 1,1-diphosphonic acids and their alkali me...
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5112395 |
Compositions and process for activating metal surfaces prior to coating with zinc phosphate are disclosed. A Jernstedt salt concentrate is provided which can be employed to prepare Jernstedt salt baths of the type desired by combining th...
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5078812 |
A method for making a dark, adherent coating on exposed metal surfaces of a color-selection electrode assembly of a CRT includes the steps of applying a first solution of aqueous phosphoric acid to the metal surfaces of the assembly; con...
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5067990 |
A method for applying a phosphate conversion coating atop an iron-rare earth-boron alloy not normally susceptible to phosphating includes the step of applying a compatible metal layer to the alloy substrate before phosphatizing. The meta...
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5039362 |
Effective, titanium-free agents for activating metal surfaces prior to phosphating these surfaces with phosphating baths containing zinc ions can be made by reacting alkali metal phosphates with 1,1-diphosphonic acids and their alkali me...
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5026423 |
Compositions and process for activating metal surfaces prior to coating with zinc phosphate are disclosed. A Jernstedt salt concentrate is provided which can be employed to prepare Jernstedt salt baths of the type desired by combining th...
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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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4969974 |
In the method for making electrode foil for an aluminum electrolyte capacitor, in order to obtain a formation layer of aluminum foil having superior waterproof nature and good stability, surface-roughened aluminum foil has hydration trea...
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