Metal Substrate Contains Elemental Aluminum Or Magnesium Or Alloy Thereof Patents (Class 148/275)
  • Patent number: 10711350
    Abstract: Implementations described herein generally relate to materials and coatings, and more specifically to materials and coatings for aluminum and aluminum-containing chamber components. In one implementation, a process is provided. The process comprises exposing an aluminum-containing component to a moisture thermal treatment process and exposing the aluminum-containing component to a thermal treatment process. The moisture thermal treatment process comprises exposing the aluminum-containing component to an environment having a moisture content from about 30% to about 100% at a first temperature from about 30 to about 100 degrees Celsius. The thermal treatment process comprises heating the aluminum-containing component to a second temperature from about 200 degrees Celsius to about 550 degrees Celsius to form an alumina layer on the at least one surface of the aluminum-containing component.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: July 14, 2020
    Assignee: APPLIED MATERICAL, INC.
    Inventors: Ren-Guan Duan, Jianhua Zhou, Juan Carlos Rocha-Alvarez
  • Patent number: 10366801
    Abstract: This electric current transmission cable includes a non-anodized bare conductor based on aluminum or an aluminum alloy having a hydrophilic external specific surface intended to be in contact with the atmospheric environment, and an inside volume intended to conduct an electric current. The external specific surface of the bare conductor has a first roughness parameter, defined as the arithmetic mean deviation, measurable by profilometry, of peaks and valleys in comparison to a predetermined average profile over a reference length or surface, equal to or greater than 1.9 ?m. In addition, the inside volume of the bare conductor has oxygen doping of its aluminum-based or aluminum alloy-based components at a ratio equal to or greater than 20%, to a depth of at least 300 nm with respect to the external specific surface.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 30, 2019
    Assignee: RTE RESEAU DE TRANSPORT D'ELECTRICITE
    Inventor: Serge Imbert
  • Patent number: 9228263
    Abstract: A chromate-free, self-healing conversion coating solution for magnesium alloy substrates, composed of 10-20 wt. % Mg(NO3)2.6H2O, 1-5 wt. % Al(NO3)3.9H2O, and less than 1 wt. % of [V10O28]6? or VO3? dissolved in water. The corrosion resistance offered by the resulting coating is in several hundreds of hours in salt-spray testing. This prolonged corrosion protection is attributed to the creation of a unique structure and morphology of the conversion coating that serves as a barrier coating with self-healing properties. Hydroxoaluminates form the backbone of the barrier protection offered while the magnesium hydroxide domains facilitate the “slow release” of vanadium compounds as self-healing moieties to defect sites, thus providing active corrosion protection.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 5, 2016
    Assignee: NEI Corporation
    Inventors: Gaurang Bhargava, Fred M. Allen, Ganesh Skandan, Peter Hornish, Mohit Jain
  • Patent number: 9039821
    Abstract: The present invention relates to methods and compositions for coating aluminum substrates. In an embodiment, the invention includes a method of applying a coating on an aluminum substrate including contacting the aluminum substrate with a first solution. The first solution can include a zinc metal salt, a sugar acid or alkali metal salt thereof, and an alkali metal hydroxide. The method can also include contacting the aluminum substrate with a second solution. The second solution can include a molybdate salt, an alkanolamine, and a fluorine acid. Other embodiments are also included herein.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 26, 2015
    Assignee: BIRCHWOOD LABORATORIES LLC
    Inventors: William V. Block, David J. Halverson, John T. Nguyen
  • Publication number: 20150090369
    Abstract: A method for conversion coating a magnesium-containing surface, the method comprising contacting the magnesium-containing surface with an ionic liquid compound under conditions that result in decomposition of the ionic liquid compound to produce a conversion coated magnesium-containing surface having a substantially improved corrosion resistance relative to the magnesium-containing surface before said conversion coating. Also described are the resulting conversion-coated magnesium-containing surface, as well as mechanical components and devices containing the conversion-coated magnesium-containing surface.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 2, 2015
    Inventors: Jun Qu, Huimin Luo
  • Patent number: 8980016
    Abstract: An acidic chromium-free solution for treating a metal surface containing: a vanadium cation source and/or a vanadyl cation source; an organic acid as an anion source; and at least one oxoacid as another anion source is provided. The oxoacid is selected from oxoacids of nitrogen, sulfur, phosphorus, boron, and chlorine. A metal component composed of, for example, aluminum or magnesium is brought into contact with the chromium-free solution to form a vanadium coating film of a surface of the metal component. A surface treating process using this chromium-free solution is useful for formation of a coating film having low corrosion resistance and low electric resistance.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: March 17, 2015
    Assignee: Nihon Hyomen Kagaku Kabushiki Kaisha
    Inventors: Takaaki Sato, Misa Suzuki
  • Patent number: 8932719
    Abstract: The object of the present invention is to strongly join an aluminum alloy part with an FRP prepreg. An object obtained by subjecting an aluminum alloy to a suitable liquid treatment so as to form a surface having large, micron-order irregularities and also fine irregularities with a period of several tens of nanometers, eliminating the presence of sodium ions from the surface and additionally forming a surface film of aluminum oxide, which is thicker than a natural oxide layer, has been found to have a powerful adhesive strength with epoxy-based adhesives. By simultaneously curing an FRP prepreg which uses the same epoxy-based adhesive in the matrix, an integral composite or structure in which FRP and aluminum alloy have been united at a joining strength of unprecedented magnitude is produced.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 13, 2015
    Assignee: Taisei Plas Co., Ltd.
    Inventors: Masanori Naritomi, Naoki Andoh
  • Patent number: 8894777
    Abstract: A surface treatment method of a magnesium alloy article includes, instead of forming a primer on a magnesium alloy based composite first, directly performing a hairline finish process on the magnesium alloy based composite, to form a hairline structure on a surface of the magnesium alloy based composite, and performing a chemical oxidation process on the magnesium alloy based composite, to form a glossy film covering the hairline structure on the magnesium alloy based composite, thereby forming a magnesium alloy article structure. Alternatively, another chemical oxidation process is performed before the hairline finish process, to form an oxide film on the surface of the magnesium alloy based composite.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: November 25, 2014
    Assignee: Getac Technology Corporation
    Inventor: Chun-Hsiang Chen
  • Patent number: 8852358
    Abstract: A process for surface treating aluminum or aluminum alloy comprises the following steps. Providing a substrate made of aluminum or aluminum alloy. The substrate is treated with a chemical conversion treatment solution containing molybdate as the main film forming agent, to form a molybdate conversion film on the substrate. Then, a ceramic coating comprising refractory compound is formed on the molybdate conversion film by physical vapor deposition.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 7, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hsin-Pei Chang, Wen-Rong Chen, Huann-Wu Chiang, Cheng-Shi Chen, Dun Mao
  • Patent number: 8821651
    Abstract: A method for surface treating a heat exchanger, a hydrophilizing treatment agent used in this method, and an aluminum heat exchanger obtained from this method are provided that excel in the initial adherence, hydrophilicity, and odor suppressibility, and can maintain these abilities for an extended time, while having little burden on the environment and the human body. The method for surface treating an aluminum heat exchanger that is brazed includes (1) a pickling treatment step; (2) a chemical conversion treatment step; and (3) a hydrophilization treatment step, in which the acidic cleaning agent contains nitric acid and sulfuric acid and contains ferric salt in a predetermined amount, the hydrophilizing treatment agent contains silica grains coated with a vinyl alcohol polymer and a polyallylamine resin.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: September 2, 2014
    Assignees: Nippon Paint Co., Ltd., Showa Denko K.K.
    Inventors: Tatsuo Yoshida, Masahiko Matsukawa, Miwa Iida, Shintaro Nakagawa
  • Patent number: 8815022
    Abstract: A method for surface treating a heat exchanger and an aluminum heat exchanger obtained from this method are provided that can effectively suppress the foul odor characteristic to flux that emanates following degradation of a hydrophilic coating film and a chemical conversion coating film in a non-corrosive flux brazed heat exchanger on which flux easily remains. The method for surface treating a non-corrosive flux brazed heat exchanger made of an aluminum material conducts a pickling treatment step, a chemical conversion treatment step, and a deodorizing treatment step on the heat exchanger, in which the acidic cleaning agent contains nitric acid and sulfuric acid as well as a predetermined amount of ferric salt, and the surface treatment agent contains silica grains coated by a vinyl alcohol polymer and polyallylamine resin such that the total content of the silica grains and the vinyl alcohol polymer is a predetermined amount.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: August 26, 2014
    Assignees: Nippon Paint Co., Ltd., Showa Denko K.K.
    Inventors: Tatsuo Yoshida, Masahiko Matsukawa, Shintaro Nakagawa
  • Patent number: 8790497
    Abstract: A process for treating the surface of magnesium alloy comprises providing a substrate made of magnesium alloy. The substrate is then treated with a chemical conversion treatment agent containing ammonium dihydrogen phosphate and potassium permanganate, to form a chemical conversion film on the substrate. A ceramic coating is then formed on the chemical conversion film using vacuum sputtering.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: July 29, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hsin-Pei Chang, Wen-Rong Chen, Huann-Wu Chiang, Cheng-Shi Chen, Dun Mao
  • Publication number: 20140120357
    Abstract: An aqueous composition for forming a chemical conversion layer on a metal surface, wherein the composition contains at least one active component for the formation of the chemical conversion layer, as well as at least one thickener, and has a viscosity in the range between 10 mPa*s and 10000 mPa*s.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicants: EADS Deutschland GmbH, Airbus Operations GmbH
    Inventors: Sonja Nixon, Martin Beneke, Dominik Raps
  • Patent number: 8696831
    Abstract: Disclosed herein is a chromate-free conversion film solution and a method of applying the solution to magnesium and magnesium alloys. The solution contains zirconium ions, manganese ions, barium ions and phosphate corrosion inhibitor; and the pH of the said solution is in the range of 1-5; and may further comprise molybdate as accelerant. The method comprises degreasing, acid etching, surface activation, surface adjusting, and film forming steps. The conversion film obtained in accordance with the disclosed method is uniform, smooth, and compact and has high corrosion resistance and good adhesion with paint film. Moreover, the chromate-free conversion film solution is environmentally friendly and possesses fast film growth rates.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: April 15, 2014
    Assignee: Institute of Metal Research Chinese Academy of Sciences
    Inventors: Dayong Shan, Yingwei Song, Enhou Han, Rongshi Chen, Wei Ke
  • Patent number: 8691028
    Abstract: A method for protecting a surface of an article includes preparing or otherwise providing a reactive solution of a form of polyaniline and an acid, thereafter applying the reactive solution to the surface of the article to form an adherent conversion coating on the surface, thereafter oxidizing the adherent conversion coating to form an oxidized coating, and thereafter contacting a chromate-free, corrosion inhibiting organic compound such as a salt of a dithiocarbamate or a salt of a dimercaptothiadiazole to the oxidized coating to form a fixed conversion coating on the surface of the article. The resulting article has the fixed conversion coating adhered to the surface of the article. The fixed conversion coating has a mixture of a reduced polyaniline salt, and a fixed disulfur-linked dithiocarbamate polymer or dimer.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: April 8, 2014
    Assignee: The Boeing Company
    Inventors: Martin W. Kendig, Melitta M. Hon, Leslie F. Warren, Jr.
  • Patent number: 8617321
    Abstract: The present invention provides a surface treatment method for an aluminum alloy and a surface treatment method for a magnesium alloy, which enable providing the surface of an aluminum alloy containing magnesium or the surface of a magnesium alloy with sufficient corrosion resistance to corrosive gases, while preventing the surface from scattering magnesium therefrom even when used in a vacuum at a temperature of not less than 300° C. In this method, a carbon fluoride compound is applied over the surface of the aluminum alloy containing magnesium or the surface of the magnesium alloy, followed by heating in an oxygen atmosphere, thereby forming a fluoride passivation film.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: December 31, 2013
    Assignees: Ulvac, Inc., Ulvac Techno, Ltd.
    Inventors: Shunji Misawa, Sakae Inayoshi, Hiroshi Sato
  • Patent number: 8608869
    Abstract: A method is disclosed for improving the corrosion behavior of cast magnesium alloy articles in which the magnesium alloy comprises an average composition of more than about 5 per cent by weight of aluminum. A microstructure with regions of varying aluminum content is developed during solidification. The microstructure comprises magnesium-rich grains generally surrounded by an aluminum-enriched phase on the boundaries between adjacent grains. The magnesium-rich grain interiors are then selectively chemically or electrochemically attacked to leave a more corrosion resistant aluminum-enriched surface on the articles. The corrosion resistance of the articles may be further enhanced by one or more of anodizing, aluminizing or painting the corrosion-resistant aluminum-enriched surface.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 17, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Deepika Sachdeva, Arun M. Kumar, Guangling Song
  • Patent number: 8580049
    Abstract: The invention concerns an analytical test element in which the sample liquid is transported from a sample application site to a determination site, where a detection site lies upstream of the sample application site in the transport direction. The analytical test element has at least one surface which is composed of at least one element that can be oxidized with water or an alloy that can be oxidized with water which has been treated by the action of boiling water or water vapor.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 12, 2013
    Assignee: Roche Diagnostics GmbH
    Inventors: Volker Zimmer, Hans-Peter Braun
  • Patent number: 8540826
    Abstract: A process for surface treatment of aluminium foils includes steps of applying an etching solution to chemically etch at least one surface of the foil to form an etched surface, and forming an aluminium oxidized coating on the etched surface. The etching solution comprises an aqueous solution which includes hydrogen peroxide as an oxidant and sulfuric, orthophosphoric or nitric acid.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: September 24, 2013
    Assignee: University of Windsor
    Inventors: Srimanta Ray, Jerald A. D. Lalman
  • Patent number: 8496762
    Abstract: A method of preparing an aluminum or aluminum alloy substrate to accept an adherent coating thereon is provided. The method includes the steps of degreasing the substrate, deoxidizing the substrate, and providing a prepaint conversion coating on the degreased and deoxidized substrate. The prepaint conversion coating composition comprises i) a source of fluoride ions; ii) a source of zirconium ions; iii) an acrylic resin; and iv) an optical brightener and forms a colorless, chromium-free conversion coating on the aluminum substrate that can be observed by exposing the treated substrate to UV light.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: July 30, 2013
    Inventors: Roberto Zoboli, Sara Salsa, Massimo Garzone
  • Patent number: 8414711
    Abstract: A workpiece including aluminum or an aluminum alloy on a surface thereof is subjected to surface treatment including the steps of immersing in an acidic or alkaline aluminum oxide film-removing solution containing a salt or oxide of a metal capable of substitution with aluminum and forming a substituted metal layer and contained in the removing solution on a surface of the aluminum or aluminum alloy while removing an aluminum oxide film on aluminum or aluminum alloy surface, forming a substituted zinc film by zinc substitution treatment without removing the substituted metal layer, removing the substituted metal layer and substituted zinc film with an oxidizing liquid, and subjecting again to zinc substitution treatment, forming a substituted zinc film.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: April 9, 2013
    Assignee: C. Uyemura & Co., Ltd.
    Inventors: Hiroki Uchida, Kazuki Yoshikawa, Toshiaki Shibata
  • Patent number: 8367210
    Abstract: The invention provides the advantages of a metallic housing and those of a synthetic resin structure for electronic devices, home electrical devices, etc., achieves high productivity and mass productivity, and enables a desired configuration and structure to be designed freely. As a pretreatment, a shaped aluminum alloy material is dipped in an aqueous solution of at least one selected from the group consisting of ammonia, hydrazine, and a water-soluble amine compound. A thermoplastic resin composition containing polyphenylene sulfide as a component is integrally bonded to the surface of the treated shaped aluminum alloy material by injection molding or other method. The molded article is a product made of the shaped aluminum alloy material and the thermoplastic resin composition containing PPS. Thus, the characteristic features of metal can be utilized in terms of mechanical strength and external appearance design. Moreover, a complicated configuration and structure can be formed inside the housing.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: February 5, 2013
    Assignee: Taisei Plas Co., Ltd.
    Inventors: Masanori Naritomi, Naoki Ando, Masao Takahashi
  • Publication number: 20120305140
    Abstract: A non-oriented electrical steel sheet includes: a base iron (1); and a tension applying type insulating film (2) of not less than 1 g/m2 nor more than 6 g/m2 on a surface of the base iron (1). An oxide layer (3) containing at least one type of oxide selected from the group consisting of Si, Al, and Cr and having a thickness of not less than 0.01 ?m nor more than 0.5 ?m is formed on the surface of the base iron (1).
    Type: Application
    Filed: February 15, 2011
    Publication date: December 6, 2012
    Inventors: Shuichi Yamazaki, Takeshi Kubota, Yousuke Kurosaki, Masahiro Fujikura, Takahide Shimazu
  • Patent number: 8293029
    Abstract: Chromium-free conversion coating treatment solutions and processes for depositing a colored layer on zinc or galvanized steel, aluminum, magnesium or their alloys, are provided comprising: hexafluorotitanate and/or hexafluorozirconate ions; molybdate and/or tungstate ions; one or more chelating complex formers; and a copolymer of alkylene phosphonic or alkylene phosphinic acid and one or more unsaturated carboxylic acids.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: October 23, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: Ulrich Jueptner, Joerg Becker
  • Patent number: 8268096
    Abstract: A method for producing colored layers on zinc, aluminum, magnesium or alloy surfaces. The surfaces are brought into contact with an aqueous treatment solution which is devoid of chrome, said solution containing, in total, 3-35 g/l persulfate ions and/or peroxodisulfate ions and not more than 10 g/l ammonia or ammonium ions, it has a pH value in the region of between 10-12 and a temperature in the range of between 30-80° C. The surfaces are brought into contact with the treatment solution for a period in the region of 0.5-5 minutes and optionally, they are covered with a coating based on organic polymers. The invention further relates to metal parts treated according to said method.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: September 18, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: Pavel Gentschev, Matthias Schweinsberg, Marco Bastian, Ulrich Jueptner
  • Publication number: 20120227868
    Abstract: The present invention provides a very lightweight magnesium-lithium alloy which has both corrosion resistance and cold workability balanced at high levels, a certain degree of tensile strength, low surface electrical resistivity, as well as a rolled material and a formed article made of the alloy, and a method of producing the alloy, by means of a magnesium-lithium alloy containing not less than 10.5 mass % and not more than 16.0 mass % Li, not less than 0.50 mass % and not more than 1.50 mass % Al, and the balance of Mg, and having an average crystal grain size of not smaller than 5 ?m and not larger than 40 ?m, a tensile strength of not lower than 150 MPa, and a surface electrical resistivity of not higher than 1? as measured with an ammeter by pressing a cylindrical two-point probe with a pin-to-pin spacing of 10 mm and a pin tip diameter of 2 mm (contact surface area of one pin is 3.14 mm2), against an alloy surface at a load of 240 g.
    Type: Application
    Filed: September 10, 2010
    Publication date: September 13, 2012
    Applicant: SANTOKU CORPORATION
    Inventors: Kenki Kin, Takeki Matsumura, Shinji Namba, Shinichi Umino, Takayuki Goto
  • Publication number: 20120231281
    Abstract: Disclosed are an aluminum alloy article having an excellent bonding force between a resin and an aluminum alloy using an alkoxysilane-containing triazinethiol, and a method for producing the same. The aluminum alloy article comprises a substrate made of aluminum or an aluminum alloy, and a resin bonded onto at least a portion of a surface of the substrate through a dehydrated silanol-containing triazinethiol derivative layer. The aluminum alloy article comprises a metal compound layer containing at least one selected from the group consisting of a hydroxide, a hydrous oxide, an ammonium salt, a carboxylate, a phosphate, a carbonate, a silicate, and a fluoride between the substrate and the dehydrated silanol-containing a triazinethiol derivative layer.
    Type: Application
    Filed: September 3, 2010
    Publication date: September 13, 2012
    Inventors: Kinji Hirai, Muneya Furukawa, Isamu Akiyama
  • Patent number: 8262810
    Abstract: A method for conversion treating a surface of a magnesium alloy workpiece includes the steps of degreasing, acid pickling, alkali pickling, and chemical converting. A phosphating solution is used in the step of chemical converting and includes the following solution concentrations: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: September 11, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Sheng-En Hsu, Yong Liu, Fei-Xiang Li, Zhao Jin
  • Patent number: 8231743
    Abstract: Improved compositions and processes for zincating magnesium and magnesium alloy substrates. An aqueous zincating composition having a pH of from about 8 to about 11 and including zinc ions, a complexing agent, fluoride ions and a reducing agent. A non-electrolytic process for zincating a magnesium or magnesium alloy substrate, including immersing the substrate in the non-electrolytic aqueous zincating composition for a time sufficient to deposit a zincate on the substrate. A non-electrolytic process for zincating a magnesium or magnesium alloy substrate, including preparing a aqueous non-electrolytic composition comprising zinc ions, a complexing agent, fluoride ions and a pH in the range from about 8 to about 11; adding to the composition an amount of a reducing agent sufficient to improve deposition of zincate on the magnesium or magnesium alloy substrate; and immersing the substrate in a composition for a time sufficient to deposit the zincate on the substrate.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: July 31, 2012
    Assignee: Atotech Deutschland GmbH
    Inventors: Jacob Grant Wiles, Nayan H. Joshi
  • Publication number: 20120168034
    Abstract: A process for surface treating aluminum or aluminum alloy comprises the following steps. Providing a substrate made of aluminum or aluminum alloy. The substrate is treated with a chemical conversion treatment solution containing molybdate as the main film forming agent, to form a molybdate conversion film on the substrate. Then, a ceramic coating comprising refractory compound is formed on the molybdate conversion film by physical vapor deposition.
    Type: Application
    Filed: July 27, 2011
    Publication date: July 5, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
    Inventors: HSIN-PEI CHANG, WEN-RONG CHEN, HUANN-WU CHIANG, CHENG-SHI CHEN, DUN MAO
  • Patent number: 8211245
    Abstract: The invention concerns an analytical test element in which the sample liquid is transported from a sample application site to a determination site, where a detection site lies upstream of the sample application site in the transport direction. The analytical test element has at least one surface which is composed of at least one element that can be oxidized with water or an alloy that can be oxidized with water which has been treated by the action of boiling water or water vapor.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: July 3, 2012
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Volker Zimmer, Hans-Peter Braun
  • Publication number: 20120152409
    Abstract: A method is disclosed for improving the corrosion behavior of cast magnesium alloy articles in which the magnesium alloy comprises an average composition of more than about 5 per cent by weight of aluminum. A microstructure with regions of varying aluminum content is developed during solidification. The microstructure comprises magnesium-rich grains generally surrounded by an aluminum-enriched phase on the boundaries between adjacent grains The magnesium-rich grain interiors are then selectively chemically or electrochemically attacked to leave a more corrosion resistant aluminum-enriched surface on the articles. The corrosion resistance of the articles may be further enhanced by one or more of anodizing, aluminizing or painting the corrosion-resistant aluminum-enriched surface.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 21, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Deepika Sachdeva, Arun M. Kumar, Guangling Song
  • Patent number: 8147913
    Abstract: The present invention provides a surface treatment method for magnesium alloy, which comprising the following steps: 1) preparation; 2) fusion and uniformly coating; 3) heat diffusion, and 4) finish; so a coating alloy is placed on a magnesium alloy substrate, and the magnesium alloy substrate is heated so that the coating alloy is uniformly melted on the magnesium alloy substrate; when heating up to a preset temperature, the coating alloy generates heat diffusion on the magnesium alloy substrate; the coating alloy finally forms a corrosion-resistant hard layer on the magnesium alloy substrate. So, this invention features simple treatment process, stable structure and environmental-friendliness in a wide range of applications.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: April 3, 2012
    Assignee: National Yunlin University of Science & Technology
    Inventors: Shih-Ying Chang, Hsien-Hsueh Lee, Wei-Shen Chen, Yi-Yuan Ke
  • Patent number: 8075709
    Abstract: A method for the surface treatment of aluminum or an aluminum alloy which comprises soaking aluminum or an aluminum alloy in a treating fluid containing ammonium silicofluoride and another aluminum-free fluorine compound to form a film thereon, wherein the treating fluid comprises an aqueous solution further containing at least one substance selected from the group consisting of aluminum fluoride, aluminum hydroxide, aluminum silicate, magnesium aluminate metasilicate and powdered aluminum.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: December 13, 2011
    Assignee: Suzuki Motor Corporation
    Inventor: Makoto Mihoya
  • Patent number: 7964030
    Abstract: A vanadate solution for conversion treating of surface of a magnesium alloy workpiece contains 8.20×104 to 8.20×10?2 mol/liter of metavanadate ion, 1.18×104 to 1.18×10?2 mol/liter of a polyhydroxylated aromatic compound, and balance of water. The pH value of the vanadate solution exceeds 1 and is less than 4. A method for preparing the vanadate solution is also provided.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: June 21, 2011
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Isao Nakatsugawa, Wu-Bin Li, Bin-Lung Ou
  • Patent number: 7942983
    Abstract: An exemplary phosphating solution is used for conversion treating a surface of a magnesium alloy workpiece. The phosphating solution includes: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin. A method for conversion treating a surface of a magnesium alloy workpiece is also provided.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: May 17, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Sheng-En Hsu, Yong Liu, Fei-Xiang Li, Zhao Jin
  • Patent number: 7879157
    Abstract: Described here is a method for pretreating the surfaces of weld parts of aluminum or alloys thereof, and weld parts produced with said method. Prior to welding, the weld parts are subjected to a treatment (17) in an acidic, aqueous solution, wherein the acidic, aqueous solution contains ions of the elements boron and/or silicon and/or titanium and/or zirconium and/or hafnium. The invention consists in that a polishing step (9) is carried out prior to the treatment in the acidic, aqueous solution to make for better sliding in a feed apparatus during the welding process.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: February 1, 2011
    Assignee: Newfrey LLC
    Inventor: Frank Drexler
  • Patent number: 7879158
    Abstract: The present invention relates to a passivating layer on a metal surface, obtainable by contacting the metal surface with a composition comprising a water-soluble nitrogenous polymer, to a surface composed of a metal surface and the passivating layer of the invention, to a process for forming a passivating layer on a metal surface, to the use of a composition comprising a water-soluble nitrogenous polymer to passivate a metal surface, and to a system on a metal surface that comprises a passivating layer of the invention and further coating films.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: February 1, 2011
    Assignee: BASF SE
    Inventors: Frank Dietsche, Helmut Witteler, Matthias Klüglein, Frank Klippel
  • Patent number: 7875129
    Abstract: A method of assembling aluminum alloy products, such as sheets, strips or tubes, by means of fluxless brazing, where the absence of flux is made possible by using a prior treatment resulting in formation of a conversion layer on the surface of the products. The treatment involves using a solution containing K+ and F? ions and at least one acid in a quantity such that the pH of the solution is less than 3. The inventive method enables effective flux was brazing in industrial conditions, such as a for the production of heat exchangers used in motor vehicles.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 25, 2011
    Assignee: Alcan Rhenalu
    Inventors: Sylvestre Safrany, Michel Mediouni, Sylvain Henry, Sandrine Dulac
  • Patent number: 7829151
    Abstract: The invention relates to a method for modifying piece surfaces consisting in bringing pieces into contact with at least one type of a modifying agent in such a way that the modification of the surface is carried out.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: November 9, 2010
    Assignee: BEHR GmbH & Co. KG
    Inventors: Snjezana Boger, Peter Englert, Mathias Pfitzer, Ingo Trautwein, Sabine Sedlmeir
  • Patent number: 7828911
    Abstract: A method for producing coloured layers on zinc, aluminium, magnesium or alloy surfaces. The surfaces are brought into contact with an aqueous treatment solution which is devoid of chrome, said solution containing, in total, 3-35 g/l persulfate ions and/or peroxodisulfate ions and not more than 10 g/l ammonia or ammonium ions, it has a pH value in the region of between 10-12 and a temperature in the range of between 30-80 ° C. The surfaces are brought into contact with the treatment solution for a period in the region of 0.5-5 minutes and optionally, they are covered with a coating based on organic polymers. The invention further relates to metal parts treated according to said method.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: November 9, 2010
    Assignee: Henkel AG & Co. KGaA
    Inventors: Pavel Gentschev, Matthias Schweinsberg, Marco Bastian, Ulrich Jueptner
  • Patent number: 7819989
    Abstract: A composition for surface treatment of aluminium, aluminum alloys, magnesium or magnesium alloys and the treating solutions being diluted to the desired concentration are defined. The composition contains (1) compound A containing at least one metal element selected from the group consisting of Hf(IV), Ti(IV) and Zr(IV), (2) a fluorine-containing compound of sufficient amount to make fluorine exist in the composition in an amount of at least 5 times the molarity of the total molarity of the metal contained in the above-mentioned compound A, (3) at least one metal ion B selected from the group of alkaline earth metals, (4) at least one metal ion C selected from the group consisting of Al, Zn, Mg, Mn and Cu, and (5) nitric ion and the mol concentration of compound A is 0.1-50 mmol/L as the metal element of Hf(IV), Ti(IV) and Zr(IV). A metal treated with the treating method of the present invention solution has an excellent resistance to various corrosive environments.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: October 26, 2010
    Assignees: Nihon Parkerizing Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Ishikura, Michiro Kurosawa, Takaomi Nakayama, Hiroyuki Sato, Tadashi Matsushita, Eisaku Okada, Fumiya Yoshida, Katsuhiro Shiota
  • Patent number: 7799150
    Abstract: Methods of passivating a metal surface are described, the methods comprising the steps of i) exposing the metal surface to a silicon-containing passivation material; ii) evacuating the metal surface; iii) exposing the treated surface to a gas composition having a concentration of reactive gas that is greater than an intended reactive gas concentration of gas to be transported by the metal surface; iv) evacuating the metal surface to remove substantially all of the gas composition to enable maintenance of an increased shelf-life, low concentration reactive gas at an intended concentration; and v) exposing the metal surface to the reactive gas at the intended reactive gas concentration. Manufactured products, high stability fluids, and methods of making same are also described.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: September 21, 2010
    Assignee: American Air Liquide, Inc.
    Inventors: Tracey Jacksier, Robert Benesch
  • Patent number: 7758967
    Abstract: An aluminum alloy-made part for a vehicular lighting fixture cast by the die-casting method and containing at least silicon is heated, whereby the silicon in the surface layer of the aluminum alloy-made part for a vehicular lighting fixture is oxidized to form a silicon oxide layer. By the heating treatment, the aluminum alloy-made part can achieve an antirust effect.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: July 20, 2010
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Akira Suzuki
  • Patent number: 7740947
    Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. the coating may desirably be topcoated.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 22, 2010
    Assignee: Metal Coatings International Inc.
    Inventors: Etienne Georges Maze, Gilbert Louis Lelong, Terry E. Dorsett, Donald J. Guhde, Toshio Nishikawa
  • Publication number: 20100096044
    Abstract: The present invention provides a surface treatment method for an aluminum alloy and a surface treatment method for a magnesium alloy, which enable providing the surface of an aluminum alloy containing magnesium or the surface of a magnesium alloy with sufficient corrosion resistance to corrosive gases, while preventing the surface from scattering magnesium therefrom even when used in a vacuum at a temperature of not less than 300° C. In this method, a carbon fluoride compound is applied over the surface of the aluminum alloy containing magnesium or the surface of the magnesium alloy, followed by heating in an oxygen atmosphere, thereby forming a fluoride passivation film.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 22, 2010
    Applicants: ULVAC, INC., ULVAC TECHNO, LTD.
    Inventors: Shunji Misawa, Sakae Inayoshi, Hiroshi Sato
  • Patent number: 7662241
    Abstract: A corrosion-inhibiting composition for application to a metal substrate, such as aluminum or steel, and in connection with a paint, and the synthesis of the composition. The active inhibitor constituent of the composition can be selected from the group consisting of 2,5-dimercapto-1,3,4 thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4-thiadiazole, trithiocyanuric acid (TMT), and derivatives of DMTD and TMT, including various N— or S— and N, N—, S— and N—,S-substituted derivatives of DMTD, including salts of DMTD of the general formula: M(DMTD)n, where n=1,2 or 3, and M is a metal cation and preferably M=Zn(II), Bi(III), Co(II), Ni(II), Cd(II), Pb(II), Ag(I), Sb(III), Cu(II), Li(I), Ca(II), Sr(II), Mg(II), La(III), Ce(III), Pr(III), Al(III) or Zr(IV). DMTD, TMT, and their derivatives may also be combined with phosphates, molybdates, borates, silicates, tungstates, phosphotungstates, phosphomolybdates, cyanamides, carbonates, SiO2 and mixtures thereof.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: February 16, 2010
    Assignee: Wayne Pigment Corp.
    Inventor: John Sinko
  • Patent number: 7641743
    Abstract: Methods and compositions that serve to both darken a zinc or other active! metal surface and impart corrosion-resistant properties thereto, are disclosed. The compositions include an aqueous solution containing about 0.1 percent to about 5 percent ammonium chloride and about 0.1 percent to about 5 percent ammonium molybdate. The compositions utilize particular ratios of concentrations of ammonium chloride and ammonium molybdate.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: January 5, 2010
    Assignee: Metal Coatings International Inc.
    Inventors: Michelle R. Pearce, Brian G. Straka, Donald J. Guhde, Terry E. Dorsett
  • Patent number: 7629023
    Abstract: A rust inhibitor which ensures the simplicity of application typical for a coating process and can demonstrate excellent characteristics similar to those obtained with a metal spraying method. The rust inhibitor is manufactured by admixing zinc and aluminum as fine powders of inorganic metals, which are manufactured with a stamping mill to have a flaky shape, to a modified silicone resin solution. A silane-type silicone resin is used for the modified silicone resin solution. For example, a mixed solution of an organosilane-type silicone resin and an oligomer-type silane coupling agent and the like is used.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 8, 2009
    Assignee: Primet Technology Inc.
    Inventors: Yuko Kurimoto, Kazuo Kobayashi
  • Publication number: 20090250142
    Abstract: A surface of a Mg or Mg-alloy housing of the present invention is subjected to wet blast using a mixture containing a chemical conversion treatment agent and an abrasive, whereby a chemical conversion film is formed on the surface of the Mg or Mg-alloy housing. Because of this, a chemical conversion film is formed simply on the surface of a molded product made of Mg or a Mg-alloy to reduce the correction by puttying, whereby a Mg or Mg-alloy housing is provided in which a decrease in yield and an increase in cost can be prevented.
    Type: Application
    Filed: June 15, 2009
    Publication date: October 8, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Koichi Kimura, Takayuki Fujiwara