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7381281 |
Surface treatment method of metal member, and metal goods
A method of surface-treating a metal member involves heating, or heating under pressure, the metal member in an aqueous alkaline solution having a pH of 9 or more and containing a manganese...
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7153348 |
Hexavalent chromium-free surface-treating agent for Sn or Al-based coated steel sheet, and surface treated steel sheet
A hexavalent chromium-free surface treating agent for Sn- or Al-based coated steel sheet, comprising a trivalent chromium compound (A), a water-dispersible silica (B), a lubricity imparting...
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7135075 |
Corrosion resistant coating with self-healing characteristics
An aqueous solution for depositing an inorganic corrosion resistant coating on a metal substrate is disclosed. The aqueous solution comprises a film-forming agent, a supplemental anion, and a...
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7029769 |
Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same
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...
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6977016 |
Surface modified stainless steel
A method has been developed for surface modifications of high temperature resistant alloys, such as FeCrAl alloys, in order to increase their resistance to corrosion at high temperatures. Coating...
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6863743 |
Polymetalate and heteropolymetalate conversion coatings for metal substrates
The present invention provides a conversion coating solution containing polymetalates and/or heteropolymetalates to oxidize the surface of various metal substrates. The polymetalates have the...
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6835460 |
Dry-in-place zinc phosphating compositions and processes that produce phosphate conversion coatings with improved adhesion to subsequently applied paint, sealants, and other elastomers
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...
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6819005 |
Chemical treatment of helical splines in starter
In a starter, a barrel of a one-way clutch fits on an outer circumference of an output shaft. The barrel and the output shaft have spline portions and engage with each other. A chemical conversion...
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6780256 |
Method of treating a metal surface with a no rinse zinc phosphate coating
An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion...
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6756092 |
Surface treated steel material, a method for its manufacture, and a chemical conversion treatment liquid
A chemical conversion treatment liquid which can stably form a phosphate-type chemical conversion film on a steel material for a joint portion of an oil well steel pipe containing 0.5-13% Cr is...
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6753095 |
Zinc-based metal plated steel sheet treated with phosphate being excellent in formability and method for production thereof
The aim of the present invention is to provide a phosphate treated zinc coated steel sheet with excellent workability. A steel sheet coated with a zinc based alloy has a phosphate treated coating...
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6723178 |
Process for forming a phosphate conversion coating on metal
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...
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6645316 |
Post-passivation of a phosphatized metal surface
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...
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6627006 |
Method of controlling a treatment line
The invention relates to a method of controlling a treatment line. According to said method a) a correlation between one or several variable parameters of the chemical and/or physical processes of...
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6620263 |
Zinc phosphating process and composition with reduced pollution potential
The phosphate concentration, and therefore the pollution potential, of conventional high quality phosphating compositions containing zinc, manganese, and, optionally, nickel or copper cations, can...
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6582530 |
Non-chromate protective coating for iron and iron alloys and coating solution
A non-chromate protective coating and coating solution useful for coating iron and iron alloys, particularly steel, includes V 2 O 5 , Ce 2 (MoO 4 ) 3 or SrWO 4 as a corrosion inhibitive component
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6569263 |
Corrosion protection
There has been invented a chemically bonded phosphate corrosion protection material and process for application of the corrosion protection material for corrosion prevention. A slurry of iron oxide...
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6551417 |
Tri-cation zinc phosphate conversion coating and process of making the same
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...
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6537387 |
Corrosion protection for galvanized and alloy galvanized steel strips
A process for the corrosion protection of steel strips coated with zinc or zinc alloy, characterised in that the steel strips coated with zinc or zinc alloy are brought into contact with an aqueous...
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6530999 |
Phosphate conversion coating
Phosphate conversion coatings having very fine crystal size are obtained using liquid compositions containing phosphate, zinc cations and relatively low concentrations of Co, Ni and Mn.
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6514357 |
Composition for metal surface treatment and surface treated metallic material
A composition for metal surface treatment which comprises an aluminum ion, a magnesium ion, a manganese ion, a water-soluble organic resin, an acid and water; and a surface treated metal material...
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6497772 |
Surface treatment for improved hardness and corrosion resistance
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...
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6478885 |
Phosphating processes and products therefrom with improved mechanical formability
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...
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6461450 |
Method for controlling the coating weight for strip-phosphating
A process for controlling the layer weight during the phosphating of steel strip zinc-coated on one or both sides, using a phosphating solution which contains 1 to 6 g/l zinc ions and 10 to 30 g/l...
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6458219 |
Metal surface-treating method
This invention provides a metal surface-treating method which comprises a chemical conversion step of dipping a substrate in an acidic aqueous zinc phosphate solution, and using an aqueous zinc...
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6447662 |
Process for phosphatizing, rerinsing and cathodic electro-dipcoating
A process for pretreating surfaces made from steel, galvanised steel and/or aluminum and/or alloys thereof, wherein, in a first process stage, phosphating is performed using a low-nickel zinc...
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6395105 |
Phosphating process with a metalliferous re-rinsing stage
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...
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6379474 |
Phosphating method accelerated by N-oxides
An acidic aqueous phosphating solution is presented having 0.2 to 3 g/l of zinc ions, 3 to 50 g/l of phosphate ions expressed as PO 4 −3 , and 0.05 to 4 g/l of an organic N-oxide containing a...
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6376092 |
Surface-treated steel sheet and manufacturing method thereof
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...
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6342107 |
Phosphate coatings for metal surfaces
Processes and solutions for phosphating metal surfaces. The solutions are acidic aqueous phosphate solutions containing a) from 0.1 to 1.5 g/l of zinc ion; b) from 5 to 50 g/l of phosphate ion; c)...
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6322906 |
Perforative corrosion resistant galvanized steel sheet
A galvanized steel sheet includes a galvanized coating layer having a coating weight of from about 20 to about 60 g/m 2 formed on at least one surface of the steel sheet, and a zinc phosphate...
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6287394 |
Anti corrosion treatment of metal coated steel having coatings of aluminium, zinc or alloys thereof
The present invention relates to a method for treating a surface of zinc or of an alloy of zinc and aluminum, said method comprising the step of treating said surface with an aqueous solution...
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6261384 |
Process and aqueous solution for phosphatizing metallic surfaces
A process is disclosed for preparing an aqueous zinc phosphatizing solution for producing phosphate coatings on metallic surfaces of iron, steel, zinc, zinc alloys, aluminum or aluminum alloys,...
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6231688 |
Composition and process for zinc phosphate conversion coating
A zinc phosphate-type conversion film having microfine-sized crystals is formed on metal surfaces using a conversion treatment bath that contains zinc ions and phosphate ions along with 50 to 1500...
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6231687 |
Lubrication treatment method for cold working of steel
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...
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6224657 |
Hexavalent chromium-free phosphate-bonded coatings
A heat curable bonding composition of the present invention comprises an aqueous solution containing phosphate ion (PO 4 -3 ) and chromium(III) ion (Cr +3 , or trivalent chromium) and is...
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6197126 |
Nickel-free phosphating process
The invention is a process for applying a nickel-free, copper-containing phosphate coating to a metal surface by contacting the metal surface with a phosphate solution containing 0.2 to 2.0 g/l...
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6179934 |
Aqueous phosphating composition and process for metal surfaces
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6168674 |
Process of phosphatizing metal surfaces
In a process of phosphatizing metal surfaces, which at least partly consist of iron or steel, in accordance with the low-zinc technology, the metal surfaces are brought in contact with aqueous acid...
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6117251 |
No rinse zinc phosphate treatment for prepaint application
An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion...
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6090224 |
Phosphating process with a copper-containing re-rinsing stage
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...
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6074464 |
Phosphate bonded aluminum coatings
A bonding composition for a heat curable overlay coating for coating a substrate is provided. The bonding composition comprises phosphate ions, permanganate ions, at least one species of metal...
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6068709 |
Bath and process for the phosphatization of metallic substrates, concentrates for the preparation of said bath and metallic substrates having been subjected to a treatment by said bath and process
The invention relates to a process for the phosphatization of metallic substrates comprising the use of a phosphatization bath having a pH from 1 to 5.5 and which comprises from about 0.3 to about...
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6033492 |
Composition and process for autodeposition with modifying rinse of wet autodeposited coating film
The uniformity of gloss of a dried autodeposited resin film on a metal surface can be increased by rinsing the wet autodeposited film initially formed with an aqueous modifying rinse having a pH...
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6019858 |
Zinc phosphate conversion coating and process
Concentrates containing (a) an hydroxylamine sulfate accelerator, and (b) zinc, nickel, manganese, and phosphate ions are formulated into aqueous coating solutions for treating metal surfaces, such...
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5985047 |
Anticorrosion treatment of metal coated steel having coatings of aluminium, zinc or alloys thereof
The present invention relates to a surface treating dispersion for treating a surface of zinc or of an alloy of zinc and aluminum, the surface treating dispersion comprising an aqueous solution...
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5976272 |
No-rinse phosphating process
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...
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5972522 |
Corrosion resistant Zn or part-Zn plated steel sheet with MgO coating free of Mg
A Zn or part-Zn plated steel sheet has an MgO coating free of metallic Mg thereon which increases corrosion resistance and plating adherence. The MgO coating is formed by coating according to the...
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5968240 |
Phosphate bonding composition
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...
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5954892 |
Method and composition for producing zinc phosphate coatings on metal surfaces
A method and composition for forming a zinc phosphate coating on a metal surface utilizes an aqueous solution of zinc, phosphate, nitrate, nickel, a compound containing a group IV-B element, and a...
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