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| Number | Title | Issue Date |
| 7396446 | Magnesium anodisation methods This invention relates to a method of anodising magnesium material which includes anodising the magnesium while it is immersed in an aqueous electrolyte solution having a pH above 7, and in the presence of a phosphate, the electrolyte solution also containing a sequ... | 07/08/2008 |
| 7094327 | Compositions for the treatment of magnesium alloys The invention relates to a composition for treating magnesium alloys aimed at improving the resistance thereof to corrosion. The composition is an aqueous solution with a pH ranging between 7 and 10, containing a niobium salt, hydrofluoric acid, and optionally a zir... | 08/22/2006 |
| 7005056 | Method for inhibiting corrosion of alloys employing electrochemistry A method for inhibiting corrosion, e.g., pitting corrosion, of alloys is provided. Particularly, the method comprises contacting at least a portion of a surface of the alloy with an aqueous solution comprising a salt of one or more rare earth elements selected from ... | 02/28/2006 |
| 6936349 | Method of coloring magnesium material, and housing made of colored magnesium material A housing made of a magnesium material is colored by a non-painting process. In this process, an anode oxide film is grown on the surface of the housing by subjecting the housing to anodization. The anode oxide film is colored without a paint being applied to the su... | 08/30/2005 |
| 6916414 | Light metal anodization Using pulsed current and relatively low average voltages, articles containing light metals such as magnesium may be rapidly anodized to form protective surface coatings. The anodizing solutions employed may contain phosphate, permanganate, silicate, zirconate, vanad... | 07/12/2005 |
| 6808613 | Oxidizing electrolytic method for obtaining a ceramic coating at the surface of a metal Process for obtaining a ceramic coating on the surface of a metal having semiconducting properties, such as aluminium, titanium, magnesium, hafnium, zirconium and their alloys, by a physico-chemical transformation reaction of the treated metal. This process consists... | 10/26/2004 |
| 6797147 | Light metal anodization Using aqueous electrolytes containing complex fluorides or oxyfluorides such as fluorozirconates, fluorotitanates, and fluorosilicates, articles containing light metals such as magnesium and aluminum may be rapidly anodized to form protective surface coatings. White... | 09/28/2004 |
| 6572756 | Aqueous electrolytic medium The disclosure relates to a process for forming a deposit on the surface of a metallic or conductive surface. The process employs an electrolytic process to deposit a mineral containing coating or film upon a metallic or conductive surface.... | 06/03/2003 |
| 6335099 | Corrosion resistant, magnesium-based product exhibiting luster of base metal and method for producing the same A corrosion-resistant article of a magnesium material having the gloss of the metal substrate surface comprises an anodic oxide film formed on the external surface of an article of magnesium or a magnesium alloy, which never changes the gloss of the metal... | 01/01/2002 |
| 6280598 | Anodization of magnesium and magnesium based alloys This invention provides a method for the anodization of magnesium or magnesium based alloys using an electrolytic solution containing ammonia, amines or both. The use of such an aqueous electrolytic solution in at least preferred forms alters the conditio... | 08/28/2001 |
| 6197178 | Method for forming ceramic coatings by micro-arc oxidation of reactive metals A process and apparatus for forming oxide coatings on bodies of aluminum and aluminum alloys are described. The process includes forming an electrolyte bath in an inert container. At least two reactive metal bodies are suspended in the bath. The bodies ar... | 03/06/2001 |
| 6153080 | Electrolytic process for forming a mineral The disclosure relates to a process for forming a deposit on the surface of a metallic or conductive surface. The process employs an electrolytic process to deposit a mineral containing coating or film upon a metallic or conductive surface.... | 11/28/2000 |
| 6117298 | Cathodic protective coating on magnesium or its alloys and method of producing the same A method is provided for treating a magnesium-containing article to form a cathodic protective coating on such article. This is done by electrochemically treating the article, acting as a cathode, in an alkaline solution, preferably at a temperature of be... | 09/12/2000 |
| 5961810 | Method for fabricating a conductive polymer energy storage device A method for making high power electrochemical charge storage devices, provides for depositing an electrically conducting polymer (16), (18), onto a non-noble metal substrate (10), which has been prepared by treatment with a surfactant. Using this method,... | 10/05/1999 |
| 5837117 | Two-stage process for electrolytically polishing metal surfaces to obtain improved optical properties and resulting products A process for polishing a metal surface, typically based on Al, Mg, Ta, Ti, Zr, Hf or their alloys, comprises a first conventional polishing step by chemical or electrolytic means and a second electrolytic micro-polishing step by anodizing in a mineral, o... | 11/17/1998 |
| 5800693 | Method for surface-treating substrate and substrate surface-treated by the method A method for surface-treating a substrate made of a magnesium-based metal material is disclosed, which includes immersing the substrate in an electrolyte composed of an aqueous solution containing at least one component selected from the group consisting ... | 09/01/1998 |
| 5792335 | Anodization of magnesium and magnesium based alloys This invention provides a method for the anodization of magnesium in magnesium based alloys using an electrolytic solution containing ammonia. The use of such an electrolytic solution alters the manner in which the anodization occurs to provide a coating ... | 08/11/1998 |
| 5616229 | Process for coating metals The invention provides a process for forming a ceramic coating on a valve metal selected from the group consisting of aluminum, zirconium, titanium, hafnium and alloys of these metals. The process comprises the steps of (a) immersing the metal as an elect... | 04/01/1997 |
| 5591318 | Method of fabricating a conductive polymer energy storage device A method for making high power electrochemical charge storage devices, provides for depositing an electrically conducting polymer (16), (18), onto a non-noble metal substrate (10), which has been prepared by treatment with a surfactant. Using this method,... | 01/07/1997 |
| 5487825 | Method of producing articles of aluminum, magnesium or titanium with an oxide ceramic layer filled with fluorine polymers A method of producing composite oxide ceramic fluorine polymer layers on articles of aluminum, magnesium, titanium or their alloys, particularly of light metal components, includes introducing particles of fluorine polymers into the capillary system of an... | 01/30/1996 |
| 5385662 | Method of producing oxide ceramic layers on barrier layer-forming metals and articles produced by the method A method of producing oxide ceramic layers on Al, Mg, Ti, Ta, Zr, Nb, Hf, Sb, W, Mo, V, Bi or their alloys by a plasma-chemical anodical oxidation in a chloride-free electrolytic bath having a pH value of 2 to 8 and a constant bath temperature of -30° to... | 01/31/1995 |
| 5275713 | Method of coating aluminum with alkali metal molybdenate-alkali metal silicate or alkali metal tungstenate-alkali metal silicate and electroyltic solutions therefor Method for coating a rectifier metal (aluminum) with alkali metal molybdenate/alkali metal silicate or alkali metal tungstenate/alkali metal silicate comprises immersing a rectifier metal (anode) and a cathodic metal in an electrolytic solution and imposi... | 01/04/1994 |
| 5266412 | Coated magnesium alloys A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in a first electrochemical solution comprising about 3 to 10 wt-% of a hydroxide and about 5 to 30 wt-% of a fluoride h... | 11/30/1993 |
| 5264113 | Two-step electrochemical process for coating magnesium alloys A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in a first electrochemical solution comprising about 3 to 10 wt-% of a hydroxide and about 5 to 30 wt-% of a fluoride h... | 11/23/1993 |
| 5240589 | Two-step chemical/electrochemical process for coating magnesium alloys A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in an aqueous solution comprising about 0.2 to 5 molar ammonium fluoride having a pH of about 5 to 8 and a temperature ... | 08/31/1993 |
| 5147515 | Method for forming ceramic films by anode-spark discharge A method for forming a ceramics film on the surface of a substrate comprises performing spark discharge in an electrolytic bath, wherein the electrolytic bath comprises an aqueous solution of a water-soluble or colloidal silicate and/or an oxyacid salt to... | 09/15/1992 |
| 5091062 | Web barrier packaging material A metallized web of barrier packaging material e.g. metallized plastic film, is made transparent to microwaves (without loss of its barrier properties) by passing it through an electrolyte in a bath to anodize the metal and convert it to its oxide and/or ... | 02/25/1992 |
| 4978432 | Method of producing protective coatings that are resistant to corrosion and wear on magnesium and magnesium alloys A method of producing protective coatings that are resistant to corrosion and wear on magnesium and magnesium alloys by anodic oxidation. In order to obtain coatings that have little or no inherent color, that can be easily colored, and that provide a sat... | 12/18/1990 |
| 4976830 | Method of preparing the surfaces of magnesium and magnesium alloys A method of preparing the surfaces of magnesium and magnesium alloys by anodic oxidation. To produce protective coatings that have little or no inherent color, that can easily be colored, that provide a satisfactory adhesive base for lacquering or subsequ... | 12/11/1990 |
| 4744872 | Anodizing solution for anodic oxidation of magnesium or its alloys An novel solution for anodic oxidation of magnesium or magnesium alloy is prepared by dissolving silicate, carboxylate and alkali hydroxide in water. The anodic oxidation coating formed on the surface of magnesium or its alloy using the anodizing solution... | 05/17/1988 |
| 4668347 | Anticorrosive coated rectifier metals and their alloys Metals and alloys of metals which have the property of electrolytic rectification can be coated with an anticorrosive coating by immersion in a strongly alkaline aqueous bath comprising a water soluble fluoride, a water soluble iron salt, and mixtures the... | 05/26/1987 |
| 4620904 | Method of coating articles of magnesium and an electrolytic bath therefor An electrolytic bath for coating articles of magnesium and its alloys consists essentially of an aqueous solution containing an alkali metal silicate (e.g., potassium silicate), an alkali metal hydroxide (e.g., potassium hydroxide) and a fluoride (e.g., h... | 11/04/1986 |
| 4578156 | Electrolytes for electrochemically treating metal plates The invention provides an electrochemical process for applying a firmly bonded substantially insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble polybasic organic acid plus a base as electrolyte. Th... | 03/25/1986 |
| 4551211 | Aqueous anodizing solution and process for coloring article of magnesium or magnesium-base alloy An aqueous anodizing solution for anodizing an article of magnesium or magnesium-base alloy which contains, per one liter volume thereof, 20-300 g. of an aluminate, 0.5-8 moles of an alkali hydroxide per one mole of the aluminate, and at least one kind se... | 11/05/1985 |
| 4495046 | Electrode containing thallium (III) oxide An electrode useful in an electrolytic cell contains thallium (III) oxide. A method for enhancing the electrocatalytic activity and/or stability of an electrode includes compounding an outermost layer containing thallium (III) oxide with a conductive subs... | 01/22/1985 |
| 4452674 | Electrolytes for electrochemically treated metal plates According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble polybasic organic acid as electrolyte. The po... | 06/05/1984 |
| 4448647 | Electrochemically treated metal plates According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble poly basic organic acid as electrolyte togeth... | 05/15/1984 |
| 4399021 | Novel electrolytes for electrochemically treated metal plates According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble polybasic organic acid as electrolyte. The po... | 08/16/1983 |
| 4184926 | Anti-corrosive coating on magnesium and its alloys To produce a corrosion-resistant coating thereon which is hard and uniform and capable of withstanding the action of strong acids and alkalis, a body of magnesium metal or an alloy of magnesium is first treated with an aqueous solution of hydrofluoric aci... | 01/22/1980 |
| 4094750 | Cathodic deposition of oxide coatings A process for depositing an oxide layer on a titanium surface in preparation for adhesive bonding, the oxide layer being cathodically deposited in a solution containing isoproponol and a metal salt.... | 06/13/1978 |
