Formed In Situ Patents (Class 428/472.1)
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Patent number: 7156905Abstract: The invention relates to a composition and method for treating a magnesium alloy. The inventive composition comprises an acid aqueous solution containing niobium pentoxide, a water-soluble cerium salt and, optionally, a zirconium salt and/or hydroflouric acid. Said method consists in submerging a magnesium alloy part in said composition. The invention can be used to protect magnesium alloy parts against corrosion.Type: GrantFiled: May 31, 2002Date of Patent: January 2, 2007Assignee: Universite Pierre & Marie CurieInventors: Hélène Ardelean, Philippe Marcus
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Patent number: 7077895Abstract: The present invention provides a coating composition for forming a titanium oxide film, comprising (A) a specific titanium-containing aqueous liquid and (B) at least one compound selected from the group consisting of organic acids and their salts. The present invention also provides a process for forming a titanium oxide film using the coating composition, and a metal substrate coated therewith.Type: GrantFiled: October 17, 2002Date of Patent: July 18, 2006Assignee: Kansai Paint Co., Ltd.Inventors: Jun Akui, Akinori Nagai, Yasuhiko Haruta, Osamu Isozaki
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Patent number: 7037603Abstract: The invention is directed to a material and a method of producing the material that is unaffected by the low-temperature degradation, humidity-enhanced phase transformation typical of yttria-stabilized zirconia in general, as well as of yttria-stabilized tetragonal zirconia polycrystalline ceramic (Y-TZP). Because of the high fracture toughness and high mechanical strength, this class of materials is widely used, including as implants, such as for the packaging material for small implantable neural-muscular sensors and stimulators. The destructive phase transformation is eliminated by converting the surface to stable cubic or T-prime zirconia by post-densification thermal treatment in a cation-rich milieu.Type: GrantFiled: May 25, 2004Date of Patent: May 2, 2006Assignee: Alfred E. Mann Foundation for Scientific ResearchInventor: Brian J. Lasater
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Patent number: 7037390Abstract: A method of heat treatment for an efficient forming of two-layered oxide film on the inside surface of a Ni-base alloy tube. The oxide film suppresses the Ni release in a high-temperature water environment. At least two gas supplying devices are provided on the outlet side of a continuous heat treatment furnace; or one gas supplying device is provided respectively on the outlet side and the inlet side thereof. The tube is put into the furnace while supplying an atmospheric gas into the tube from the front end of the tube moving direction with one of these gas supplying devices and a gas introducing pipe, which is arranged inside the furnace, and this tube is maintained at 650 to 1200° C. for 1 to 1200 minutes. The atmospheric gas consists of hydrogen or a mixture of hydrogen and argon, whose dew point is in a range of from ?60° C. to +20° C.Type: GrantFiled: October 9, 2003Date of Patent: May 2, 2006Assignee: Sumitomo Metal Industries, Ltd.Inventors: Osamu Miyahara, Toshihiro Imoto, Hiroyuki Anada, Kazuyuki Kitamura
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Patent number: 7026059Abstract: The present invention is to provide an ultra-thin copper foil with a carrier which comprises a release layer, a diffusion preventive layer and a copper electroplating layer laminated in this order, or a diffusion preventive layer, a release layer and a copper electroplating layer laminated in this order on the surface of a carrier foil, wherein a surface of the copper electroplating layer is roughened; a copper-clad laminated board comprising the ultra-thin copper foil with a carrier being laminated on a resin substrate; a printed wiring board comprising the copper-clad laminated board on the ultra-thin copper foil of which is formed a wiring pattern; and a multi-layered printed wiring board which comprising a plural number of the above printed wiring board being laminated.Type: GrantFiled: September 17, 2001Date of Patent: April 11, 2006Assignee: Circuit Foil Japan Co., Ltd.Inventors: Akitoshi Suzuki, Shin Fukuda, Kazuhiro Hoshino, Tadao Nakaoka
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Patent number: 6946201Abstract: A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to 1000 h in the salt spray test according to DIN 50021 SS or ASTM B 117-73 until first attack according to DIN 50961 Chapter 10; being clear, transparent and substantially colorless and presenting multi colored iridescence; having a layer thickness of approx. 100 nm to 1000 nm; and being hard, adhering well and being resistant to wiping.Type: GrantFiled: July 13, 2001Date of Patent: September 20, 2005Assignee: SurTec International GmbHInventors: Patricia Preikschat, Rolf Jansen, Peter Hulser
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Patent number: 6881254Abstract: An inorganic film-forming coating composition prepared by adding a basic compound (B) to a titanium-containing water based solution (A) obtained by reacting a hydrogen peroxide water with at least one titanium compound selected from the group consisting of a hydrolizable titanium compound, a low condensation product of the hydrolizable titanium compound, titanium hydroxide and a low condensation product of the titanium hydroxide; and an inorganic film-forming method by use of the coating composition.Type: GrantFiled: May 22, 2002Date of Patent: April 19, 2005Assignee: Kansai Paint Co., Ltd.Inventors: Jun Akui, Hideo Kogure, Osamu Isozaki
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Patent number: 6878462Abstract: In the present application, a steel sheet having surface-treated zinc-based plating is provided which comprises a zinc-based plating layer, a chromium-free conductive intermediate layer and an organic resin layer, all of the layers being superimposed one on another in the order mentioned. Even though it is of a so-called chromium-free surface-treated steel sheet, the steel sheet is more conductive and more highly resistant to corrosion than conventional chromium-free steel sheets, the likelihood of water pollution is reduced, and the steel sheet can be used in various applications as a replacement for conventional chromate-treated steel sheets.Type: GrantFiled: October 5, 2000Date of Patent: April 12, 2005Assignee: JFE Steel CorporationInventors: Shigeru Umino, Chiyoko Tada, Hiroyuki Ogata
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Patent number: 6866765Abstract: An R-T-B magnet (R is at least one kind of rare-earth elements including Y, and T is Fe or Fe and Co) has an electrolytic copper-plating film where the ratio [I(200)/I(111)] of the X-ray diffraction peak intensity I(200) from the (200) plane to the X-ray diffraction peak intensity I(111) from the (111) plane is 0.1-0.45 in the X-ray diffraction by CuKal rays. This electrolytic copper-plating film is formed by an electrolytic copper-plating method using an electrolytic copper-plating solution which contains 20-150 g/L of copper sulphate and 30-250 g/L of chelating agent and contains no agent for reducing copper ions and has a pH adjusted to 10.5-13.5.Type: GrantFiled: July 4, 2001Date of Patent: March 15, 2005Assignee: Hitachi Metals, Ltd.Inventors: Setsuo Ando, Minoru Endoh, Tsutomu Nakamura, Toru Fukushi
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Patent number: 6863987Abstract: Titanium resistant to discoloration in an atmospheric environment characterized by having an average carbon concentration of 14 at % or less in a range to a depth of 100 nm from the surface and having an oxide film of a thickness of 12 to 40 nm at its surface. Titanium resistant to discoloration in an atmospheric environment characterized in that, in X-ray diffraction of its surface, a ratio (X1/X2) of a (200) peak intensity X1 of TiC to a (110) peak intensity X2 of titanium is not more than 0.18 and by having an oxide film of a thickness of 12 to 40 nm at its surface.Type: GrantFiled: February 23, 2001Date of Patent: March 8, 2005Assignee: Nippon Steel CorporationInventors: Michio Kaneko, Teruhiko Hayashi, Kazuhiro Takahashi, Kiyonori Tokuno, Junichi Tamenari, Kinichi Kimura, Hiroshi Shimizu, Shoichi Maruyama
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Patent number: 6841009Abstract: Disclosed is a reaction vessel used for oxidizing and decomposing equipment suitable for processing with supercritical water, and methods of manufacturing the reaction vessel. The reaction vessel comprises an oxide film containing a platinum group metal oxide for example having a fine crystalline structure, and a high corrosion resistance in both oxidizing and reducing atmosphere. The film is formed on a surface of the vessel by performing a pyrolysis reaction in an atmosphere containing water vapor. The oxide film is comprised of at least one platinum group metal oxide selected from Ir, Ru or Rh oxide, and at least one oxide of a metal selected from Ti and Ta.Type: GrantFiled: March 7, 2003Date of Patent: January 11, 2005Assignee: Furuyametal Co., Ltd.Inventors: Takahito Furuya, Takayuki Shimamune
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Patent number: 6841265Abstract: The objective of the present invention is to provide a titanium alloy vacuum container and vacuum parts that can easily achieve an ultra-high vacuum in a short time through vacuum evacuation. The titanium alloy of the titanium alloy vacuum container and vacuum parts has a compact structure composed of fine grains, each having a size of approximately not more than 10 ?m, with a surface that is exposed to at least vacuum being set to have a surface roughness of not more than 50 nm; and in this structure, preferably, the surface roughness thereof may be set to not more than 10 nm, the titanium alloy may have a hardness in a range of not less than 230 Hv to not more than 310 Hv, and the titanium alloy may have a passivity surface film made by a thin titanium oxide layer or nitride layer that is formed on the surface thereof. The titanium alloy, which is desirably used in such titanium alloy vacuum container and vacuum parts, contains 0.3 wt. % to 0.5 wt. % of iron and 0.3 wt. % to 0.5 wt.Type: GrantFiled: March 18, 2002Date of Patent: January 11, 2005Assignees: Yamaguchi Technology Licensing Organization, Ltd., Shinko Industries Co., Ltd.Inventors: Hiroki Kurisu, Mitsuru Matsuura, Setsuo Yamamoto, Masaki Hesaka, Atsushi Takemura
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Patent number: 6835459Abstract: A conductive and weldable anti-corrosion composition for coating metal surfaces which contains: (a) 5 to 40 wt. % of an organic binder containing: (aa) at least one epoxide resin (ab) at least one hardener selected from cyanoguanidine, benzoguanamine and plasticised urea resin (ac) at least one amine adduct selected from polyoxyalkylenetriamine and epoxide resin/amine adducts (b) 0 to 15 wt. % of an anti-corrosion pigment (c) 40 to 70 wt. % of a conductive pigment selected from powdered zinc, aluminum, graphite, molybdenum sulfide, carbon black and iron phosphide (d) 0 to 45 wt. % of a solvent; and a lacquered metal structural part which has a conductive organic layer.Type: GrantFiled: November 6, 2002Date of Patent: December 28, 2004Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Wolfgang Lorenz, Andreas Kunz, Eva Wilke
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Patent number: 6833197Abstract: A method of case hardening an article formed of titanium, zirconium or an alloy of titanium and/or zirconium is disclosed. First, the article is heat-treated in an oxidizing atmosphere at a temperature in the range of 700 to 1000° C. so as to form an oxide layer on the article. Then, the article is further heat-treated in a vacuum or in a neutral or inert atmosphere at a temperature in the range of 700 to 1000° C. so as to cause oxygen from the oxide layer to diffuse into the article.Type: GrantFiled: June 26, 2002Date of Patent: December 21, 2004Assignee: The University of BirminghamInventors: Hanshan Dong, Peter Harlow Morton, Andrew Bloyce, Thomas Bell
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Patent number: 6821633Abstract: In at least one aspect, the invention relates to an entirely or substantially chromium-free conversion coating composition and process for conversion coating metal surfaces that provides corrosion resistance. In at least another aspect, the present invention relates to an article having a metal surface that is at least partially coated with an entirely or substantially chromium-free conversion coating that provides corrosion resistance. In certain embodiments, the conversion coating composition comprises water and (A) dissolved fluorometallate anions selected from the group consisting of TiF6−2, ZrF6−2, HfF6−2, SiF6−2, AlF6−3, GeF6−2, SnF6−2, BF4−, and mixtures thereof and (B) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl ethanolamine. In other embodiments, the composition also comprises (C) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl glucamine.Type: GrantFiled: May 16, 2003Date of Patent: November 23, 2004Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)Inventors: Jianping Liu, Patrick A. Scalera, Shawn E. Dolan
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Patent number: 6818315Abstract: A method for the manufacture of a metal matrix composite by the SHS technique comprises a reaction between titanium and carbon or between titanium and borium, forming titanium carbide or titanium diboride. Tantalum and molybdenum or chromium are blended to the raw materials of the metal matrix composite to improve the resistance of the metal matrix composite to high temperatures and/or corrosion. The invention also relates to a metal matrix composite which contains elements at whose presence a protective oxide layer is formed on the surface of the metal matrix composite during the use.Type: GrantFiled: June 19, 2003Date of Patent: November 16, 2004Assignee: Valtion Teknillinen TutkimuskeskusInventors: Pertti Lintunen, Pekka Lintula, Tomi Lindroos, Anssi Jansson, Simo-Pekka Hannula
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Patent number: 6818313Abstract: A corrosion-inhibiting coating, process, and system that provides a tight, adherent zinc- or zinc-alloy coating that is directly deposited onto steel or cast iron surfaces for enhanced corrosion protection. A process for applying the coating is also provided. The process includes the application of two sequential aqueous baths. The first bath contains a precursor zinc compound while the second bath contains a reducing agent to deposit the zinc directly upon the steel or cast iron.Type: GrantFiled: July 24, 2002Date of Patent: November 16, 2004Assignee: University of DaytonInventors: Andrew W. Phelps, Jeffrey A. Sturgill
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Patent number: 6810575Abstract: Disclosed is a functional element for use in an electric, an electronic or an optical device, and a method for producing the same. The functional element comprises a substrate having on an upper surface thereof a plurality of metal oxide needles extending upwardly of the upper surface of the substrate, with their respective central axes arranged substantially in parallel with each other, wherein the needles have a specific average circle-based diameter and a specific average aspect ratio, and wherein the needles are present at a specific density at the upper surface of the substrate.Type: GrantFiled: September 29, 2000Date of Patent: November 2, 2004Assignee: Asahi Kasai Chemicals CorporationInventors: Hidetoshi Saito, Minoru Sato, Yoshikazu Ueda, Hideo Kinoshita
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Patent number: 6811898Abstract: The present invention provides an abrasion-resistant coating which has high oxidation resistance and durability and can be applied easily at a low cost. The abrasion-resistant coating in accordance with the present invention is formed at the tip end of a base material forming a gas turbine blade. The abrasion-resistant coating at the tip end has a thickness of 300 microns. On the tip end, hard particles H consisting of CBN are fixed in a bond coating formed by heating, melting, and solidification of a mixture of a brazing filler metal and M—Cr—Al—Y (M designates a metal element such as Co and Ni). The hard particles H are Ni and Co coated to improve wettability relative to the brazing filler metal, and are arranged so that some of them are partially protruded from the surface of bond coating to exhibit the grindability.Type: GrantFiled: April 1, 2003Date of Patent: November 2, 2004Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Minoru Ohara, Masahiko Mega
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Publication number: 20040166338Abstract: A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, so that at a temperature of above about 600° C., the composite is substantially resistant to oxidation and spallation.Type: ApplicationFiled: February 11, 2004Publication date: August 26, 2004Applicant: Titanox Developments LimitedInventors: Deliang Zhang, Wei Gao, Danyang Ying, Zhengwei Li, Zhihong Cai, Jing Liang
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Patent number: 6771490Abstract: A metal frame for electronic hardware and a method of manufacturing such a frame wherein at least a portion of the frame is made of bulk-solidifying amorphous alloys or bulk-solidifying amorphous alloy-composites is provided. The metal frames of the invention are preferably made of bulk-forming amorphous alloys or bulk-forming amorphous alloy-composites having an elastic limit for the metal frame of at least about 1.5%, and preferably greater than about 2.0%, a &Dgr;Tsc of more than 30° C., and at least one of the following properties: a hardness value of about 4 GPA or more, and preferably 5.5 GPA or more; a yield strength of about 2 GPa or more; a fracture toughness of about 10 ksi-sqrt(in) (sqrt:squre root) or more, and preferably 20 ksi sqrt(in) or more; and a density of at least 4.5 g/cc or more.Type: GrantFiled: June 7, 2002Date of Patent: August 3, 2004Assignee: Liquidmetal TechnologiesInventors: Atakan Peker, William L. Johnson
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Patent number: 6759134Abstract: A process for forming a metallic article having a black ornamental surface includes the steps of metallurgically providing an alloy containing between about 51 and 70 about percent by weight of titanium, between about 3 and about 17 percent by weight of niobium, and the balance of a metal selected from the group consisting of zirconium, tantalum, molybdenum, hafnium zirconium, chromium, and mixtures thereof. The alloy is then casted and/or metal worked into a workpiece having a desired geometry and surface texture. The workpiece thereof is then baked in a kiln or oven in a substantially air atmosphere of between about 450 and about 850 degrees C. for a period of between about one and about 29 minutes. Resultant of such baking, there is produced a durable black surface layer consisting substantially of an oxide of niobium which is adhered to the substrate of the workpiece which remains unoxidized.Type: GrantFiled: April 30, 2002Date of Patent: July 6, 2004Inventor: Edward Rosenberg
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Patent number: 6733896Abstract: The present invention comprises a method for treating one or more multi-metal articles. The method comprises exposing the one or more articles to a first treatment composition capable of providing a conversion coating on steel- and zinc-based metal, and exposing the one or more articles to a second treatment coating composition suitable for providing a conversion coating on aluminum-based metal articles. Preferably, the first treatment composition comprises a zinc-phosphate conversion coating comprising, zinc ion, phosphate ion, manganese ion, and fluoride ion. Preferably, the second treatment composition comprises a ceramic composite treatment composition.Type: GrantFiled: February 15, 2002Date of Patent: May 11, 2004Assignee: Henkel CorporationInventors: Shawn E. Dolan, Michael J. Kay, Lawrence R. Carlson
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Patent number: 6713199Abstract: A multilayer structure, used especially as a material of high relative permittivity, includes a plurality of separate layers, each having a thickness of less than 500 Å, and based on hafnium dioxide (HfD2), zirconium dioxide (ZrO2) and alumina (Al2O3). In practice, the hafnium dioxide, zirconium dioxide and alumina layers form alloys of formula HfxZrAlyOz. Advantageously, the stoichiometry of the HfxZrAlyOz alloys varies from one layer to another.Type: GrantFiled: December 24, 2002Date of Patent: March 30, 2004Assignee: MemscapInventor: Lionel Girardie
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Publication number: 20040038053Abstract: A method for the manufacture of a metal matrix composite by the SHS technique comprises a reaction between titanium and carbon or between titanium and borium, forming titanium carbide or titanium diboride. Tantalum and molybdenum or chromium are blended to the raw materials of the metal matrix composite to improve the resistance of the metal matrix composite to high temperatures and/or corrosion. The invention also relates to a metal matrix composite which contains elements at whose presence a protective oxide layer is formed on the surface of the metal matrix composite during the use.Type: ApplicationFiled: June 19, 2003Publication date: February 26, 2004Inventors: Pertti Lintunen, Pekka Lintula, Tomi Lindroos, Anssi Jansson, Simo-Pekka Hannula
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Patent number: 6692838Abstract: The invention includes a composition of matter which is resistant to metal dusting and a method for preventing metal dusting on metal surfaces exposed to carbon supersaturated environments.Type: GrantFiled: March 15, 2002Date of Patent: February 17, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Trikur Anantharaman Ramanarayanan, ChangMin Chun
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Patent number: 6689473Abstract: A surface coating composition for providing a self-assembling monolayer, in stable form, on a material surface or at a suitable interface, as well as a method of preparing such a composition and a method of using such a composition to coat a surface, such as the surface of an implantable medical device, in order to provide the surface with desirable properties. The method provides the covalent attachment of a SAM to a surface in a manner that substantially retains or improves the characteristics and/or performance of both the SAM and the surface itself. Covalent attachment is accomplished by the use of one or more latent reactive groups, e.g., provided by either the surface and/or by the SAM-forming molecules themselves.Type: GrantFiled: June 4, 2002Date of Patent: February 10, 2004Assignee: SurModics, Inc.Inventors: Patrick E. Guire, Kristin S. Taton
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Publication number: 20040023048Abstract: The present invention provides increased adhesion between the native oxide surface of a material and adhesive material or tissue by providing a phosphorous-based coating layer comprising a plurality of omega-functionalized organo-phosphonate moieties bonded to the native oxide surface of a substrate by a phosphonate bond and a plurality of one or more coating moieties selected from the group consisting of inorganic, organic, or bioactive moieties, each said coating moiety being bonded to the omega-functional group of at least one omega-functionalized organo-phosphonate moiety by means of a member of the group comprising a metal complex and an organic polymer, and when bonded by means of a metal complex, the metal complex further characterized by being derived from a metal alkoxide reagent, and when bonded by means of an organic polymer, the organic polymer further characterized by being derived from an ionic or step-reaction polymerization which incorporates one or more of said omega-functional groups into saType: ApplicationFiled: April 1, 2003Publication date: February 5, 2004Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Michael D. Carolus, Eric L. Hanson, Jean E. Schwarzbauer, Kim S. Midwood, Michael P. Danahy
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Patent number: 6669764Abstract: Pretreated aluminum and aluminum alloys and the process and composition for pretreating said aluminum and its alloys to provide a coating with color recognition for identification purposes and to improved the corrosion-resistance, electrical conductivity, and adhesion properties which comprises pretreating said aluminum and its alloys with an effective amount of an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 comprising water soluble trivalent chromium compounds, alkali metal hexafluorozirconates, divalent zinc compounds, alkali metal fluoro-compounds, and effective amounts of water soluble thickeners, surfactants or wetting agents.Type: GrantFiled: January 23, 2003Date of Patent: December 30, 2003Assignee: The United States of America as represented by the Secretary of the NavyInventors: Craig A. Matzdorf, William C. Nickerson, Jr.
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Publication number: 20030230215Abstract: Pretreated aluminum and aluminum alloys and the process and composition for pretreating said aluminum and its alloys to provide a coating with color recognition for identification purposes and to improved the corrosion-resistance, electrical conductivity, and adhesion properties which comprises pretreating said aluminum and its alloys with an effective amount of an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 comprising water soluble trivalent chromium compounds, alkali metal hexafluorozirconates, divalent zinc compounds, alkali metal fluoro-compounds, and effective amounts of water soluble thickeners, surfactants or wetting agents.Type: ApplicationFiled: January 23, 2003Publication date: December 18, 2003Inventors: Craig A. Matzdorf, William C. Nickerson
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Patent number: 6663700Abstract: Aqueous compositions for post-treating metal coated substrates such as cadmium-plated steel, and zinc-nickel coated substrates and the process for using said compositions to provide a color recognizable coating and to improve the corrosion-resistance, abrasion, electrical, and adhesion properties of the coating. The post-treatment composition comprises an acidic aqueous solution having a pH ranging from about 2.5 to 5.5 and contains effective amounts of trivalent chromium compounds, alkali metal hexafluorozirconates, at least one divalent zinc compound, alkali metal fluoro-compounds, and effective amounts of water soluble thickeners, wetting agents or surfactants.Type: GrantFiled: January 23, 2003Date of Patent: December 16, 2003Assignee: The United States of America as represented by the Secretary of the NavyInventors: Craig A. Matzdorf, William C. Nickerson, Jr.
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Publication number: 20030215653Abstract: In at least one aspect, the invention relates to an entirely or substantially chromium-free conversion coating composition and process for conversion coating metal surfaces that provides corrosion resistance. In at least another aspect, the present invention relates to an article having a metal surface that is at least partially coated with an entirely or substantially chromium-free conversion coating that provides corrosion resistance. In certain embodiments, the conversion coating composition comprises water and (A) dissolved fluorometallate anions selected from the group consisting of TiF6−2, ZrF6−2, HfF6−2, SiF6−2, AlF6−3, GeF6−2, SnF6−2, BF4−, and mixtures thereof and (B) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl ethanolamine. In other embodiments, the composition also comprises (C) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl glucamine.Type: ApplicationFiled: May 16, 2003Publication date: November 20, 2003Inventors: Jianping Liu, Patrick A. Scalera, Shawn E. Dolan
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Patent number: 6649561Abstract: A titania-coated honeycomb catalyst matrix is provided for the ultraviolet-photocatalytic oxidation of organic pollutants in a flowing fluid. A honeycomb-shaped skeletal structure (12) has a thin, lightweight substrate (18) of metal or ceramic, typically an aluminum alloy, and a surface coating (20) of photocatalyst, such as titania. The photocatalyst (20) is bonded to the substrate (18) via a thin oxide layer (18′) on the substrate. The oxide layer (18′) may be grown on the substrate. The photocatalyst coating (20) is made by mixing (30) titania powder in a TiO2 sol-gel to form a titania slurry. The substrate with oxide layer is coated (30) with the titania slurry and then heat treated (31). The photocatalyst coating (20) is typically applied to substrate sheets (40, 60, 62) preformed for assembly into a honeycomb-shaped skeletal structure (12) having an array of parallel cells (46, 46′).Type: GrantFiled: February 26, 2001Date of Patent: November 18, 2003Assignee: United Technologies CorporationInventors: Joseph J. Sangiovanni, Zissis A. Dardas, Mariana A. Ioneva, Lin Li
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Publication number: 20030207134Abstract: A method for improving the electrical conductivity of a substrate of metal, metal alloy or metal oxide comprising depositing a small or minor amount of metal or metals from Group VIIIA metals (Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt) or from Group IA metals (Cu, Ag, Au) on a substrate of metal, metal alloys and/or metal oxide from Group IVA metals (Ti, Zr, Hf), Group VA metals (V, Nb, Ta), Group VIA metals (Cr, Mo, W) and Al, Mn, Ni and Cu and then directing a high energy beam onto the substrate to cause an intermixing of the deposited material with the native oxide of the substrate metal or metal alloy. The native oxide layer is changed from electrically insulating to electrically conductive. The step of depositing can be carried out, for example, by ion beam assisted deposition, electron beam deposition, chemical vapor deposition, physical vapor deposition, plasma assisted, low pressure plasma and plasma spray deposition and the like.Type: ApplicationFiled: April 11, 2003Publication date: November 6, 2003Inventors: Barry Muffoletto, Ashish Shah, Donald H. Stephenson
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Publication number: 20030190487Abstract: A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, so that at a temperature of above about 600° C., the composite is substantially resistant to oxidation and spallation.Type: ApplicationFiled: April 9, 2002Publication date: October 9, 2003Inventors: Deliang Zhang, Wei Gao, Danyang Ying, Zhengwei Li, Zhihong Cai, Jing Liang
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Publication number: 20030178112Abstract: Titanium material less susceptible to discoloration and method for thereof are provided. Titanium materials less susceptible to discoloration in the atmosphere are obtainable by controlling the fluorine and carbon contents in the oxide film on the surface thereof and the thickness of the oxide film. Such titanium materials are obtainable by dissolving the surface thereof in an aqueous fluonitric acid solution with a nitric acid concentration of not higher than 80 g/l or heat-treating at between 300 and 900° C. in a vacuum or in an inert gas atmosphere of argon or helium after dissolving in the aqueous fluonitric acid solution.Type: ApplicationFiled: January 27, 2003Publication date: September 25, 2003Inventors: Kazuhiro Takahashi, Teruhiko Hayashi, Michio Kaneko, Kiyonori Tokuno, Junichi Tamenari, Kinichi Kimura
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Patent number: 6612898Abstract: A method for forming an oxidation-passive layer having high corrosion resistance to highly oxidizing materials such as ozone; a stainless steel and a titanium base alloy having corrosion resistance to an ozone containing fluid; and a fluid containing part, a process apparatus, and a fluid feed/discharge system made by using the same. The method comprises the steps of heat-treating the surface of a stainless steel or titanium-base alloy having an Al content of 0.5 percent by weight to 7 percent by weight either at 300° C. to 700° C. in a mixed gas atmosphere composed of an inert gas and 500 ppb to 1 percent H2O gas or 1 ppm to 500 ppm oxygen gas, or alternatively at 20° C. to 300° C. in a mixed gas atmosphere composed of an oxygen gas and at least 100 ppm ozone gas to form an oxidation-passive layer containing an aluminum oxide or a titanium oxide.Type: GrantFiled: May 14, 1999Date of Patent: September 2, 2003Assignees: Tadahiro OHMI, Kabushiki Kaisha UltraClean Technology Research InstituteInventors: Tadahiro Ohmi, Takahisa Nitta
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Publication number: 20030162042Abstract: The objective of the present invention is to provide a titanium alloy vacuum container and vacuum parts that can easily achieve an ultra-high vacuum in a short time through vacuum evacuation.Type: ApplicationFiled: December 30, 2002Publication date: August 28, 2003Inventors: Hiroki Kurisu, Mitsuru Matsuura, Setsuo Yamamoto, Masaki Hesaka, Atsushi Takemura
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Patent number: 6610422Abstract: The method for manufacturing coated steel sheet has the steps of: immersing a steel sheet in a hot-dip coating bath to form an Al—Zn base coating layer containing 20 to 95 mass % Al on the steel sheet, forming a passivated layer on the coating layer; and applying thermal history to the coating layer. The thermal history is applied immediately after the steel sheet left the hot-dip coating bath or in a temperature range of from T(° C.) between 130° C. and 300° C. to 100° C.Type: GrantFiled: September 26, 2002Date of Patent: August 26, 2003Assignee: NKK CorporationInventors: Toshihiko Ooi, Takafumi Yamaji, Keiji Yoshida, Yuichiro Tanaka, Junichi Inagaki, Masaaki Yamashita, Yasuhiro Majima, Nobuyuki Ishida, Yuichi Fukushima, Norio Inoue, Shinji Hori
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Publication number: 20030129426Abstract: A discharge wire usable in an electrification device includes a tungsten wire subjected to mirror finish processing and an oxidized layer formed by heating the surface of the tungsten wire at a temperature in the range 400 to 600° C., wherein the film has a thickness in the range of 0.01 to 0.3 &mgr;m.Type: ApplicationFiled: May 26, 2000Publication date: July 10, 2003Inventors: Tsuyoshi Kunishi, Nobuhiro Hayashi, Toru Kabashima
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Patent number: 6582833Abstract: A Ti-base wire rod for forming molten metal excellent both in rod feeding smoothness and arc stability is disclosed. A wire rod 301 is composed of Ti metal, and has in the surficial portion including the surface thereof an oxygen enriched layer having an oxygen concentration higher than that in an inner portion. Ratio Tw/Dw of the thickness Tw of the oxygen enriched layer and the diameter Dw of the wire rod is adjusted within a range of 1×10−3 to 1×10−1, and the average oxygen concentration of the oxygen enriched layer is adjusted to 1 wt % or above.Type: GrantFiled: July 11, 2002Date of Patent: June 24, 2003Assignee: Daido Tokushuko Kabushiki KaishaInventors: Kazuhiro Toyoda, Makoto Chujoya, Shigeo Hanajima, Takashi Suzuki, Takashi Orii, Takao Shimizu, Toshiharu Noda, Bunji Naito, Kohachiro Ohashi
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Patent number: 6548178Abstract: A method for reducing in situ the electrochemical corrosion potential and susceptibility to stress corrosion cracking of a nickel-base alloy and boiling water nuclear reactor components formed therefrom when in contact with high temperature water. The method comprises the steps of: adding a metal hydride to the high temperature water; dissociating the metal hydride in the high temperature water to form a metal and at least one hydrogen ion; and reducing the concentration of the oxidizing species by reacting the hydrogen ions with an oxidizing species, thereby reducing in situ the electrochemical corrosion potential of the nickel-base alloy. The method may further include the steps of reacting the metal with oxygen present in the high temperature water to form an insoluble oxide and incorporating the metal into the surface of the nickel-base alloy, thereby reducing the electrical conductivity of the surface of the nickel-base alloy.Type: GrantFiled: September 26, 2002Date of Patent: April 15, 2003Assignee: General Electric CompanyInventors: Young Jin Kim, Peter Louis Andresen
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Patent number: 6544666Abstract: A new processed steel sheet comprising of a steel base coated with a Zn or its alloy plating layer and a converted layer, which contains both of at least an insoluble or scarcely-soluble metal compound and at least a soluble metal compound. The insoluble or scarcely-soluble compound may be one or more of valve metal oxides or hydroxides, and the soluble compound may be one or more of valve metal fluorides. The converted layer may be also composed of one or more of complex compounds of Mn and Ti. The insoluble or scarcely-soluble compound acts as a barrier for insulation of a steel base from an atmosphere, while the soluble compound exhibits a self-repairing faculty to repair defective parts of the converted layer. Due to the converted layer, the processed steel sheet is remarkably improved in corrosion resistance, without the presence of chromium compounds which would put harmful influences on the environment.Type: GrantFiled: November 9, 2001Date of Patent: April 8, 2003Assignee: Nisshin Steel Co., Ltd.Inventors: Kouichiro Ueda, Shigeyasu Morikawa, Tadashi Nakano, Yasumi Ariyoshi, Keiji Izumi, Masanori Matsuno, Hirofumi Taketsu
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Publication number: 20030056856Abstract: A Ti alloy poppet valve consists of a valve stem and a valve head, and is employed as intake or exhaust valve in an internal combustion engine of an automobile. O2 is put into the valve in a furnace at very slight amount and heated to introduce oxygen atoms into titanium of the valve to form a Ti—O interstitial solid solution without making titanium oxides. The valve is strengthened to increase hardness and wear resistance.Type: ApplicationFiled: October 21, 2002Publication date: March 27, 2003Inventors: Masahito Hirose, Hiroaki Asanuma
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Patent number: 6521029Abstract: Pretreated aluminum and aluminum alloys and the process for pretreating said aluminum substrates to improve its corrosion-resistance, and adhesion properties which comprises pretreating said aluminums with an effective amount of an acidic aqueous solution having a pH ranging from about 2.5 to 4.5 and comprises effective amounts of a trivalent chromium compound, alkali metal hexafluorozirconates, at least one alkali metal fluoro-compound, and small but effective amounts of water soluble thickeners and/or surfactants.Type: GrantFiled: April 5, 2002Date of Patent: February 18, 2003Assignee: The United States of America as represented by the Secretary of the NavyInventors: Craig A Matzdorf, James L. Green, III, Michael J. Kane
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Patent number: 6482274Abstract: A nonchromate metallic surface treating agent comprising (a) a silane coupling agent and/or a hydrolytic condensation product thereof, (b) water-dispersible silica, and (c) a zirconium compound and/or a titanium compound is disclosed. The present invention also discloses a method for treating a surface of a PCM steel panel, a method of producing a PCM steel panel, and a PCM steel panel as produced by the method.Type: GrantFiled: February 27, 2001Date of Patent: November 19, 2002Assignee: Nippon Paint Co., Ltd.Inventors: Toshiaki Shimakura, Motohiro Sasaki, Katsuyoshi Yamasoe, Christian Jung
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Patent number: 6475300Abstract: A non-chromate metallic surface treating agent comprising (a) a silane coupling agent and/or a hydrolytic condensation product thereof, (b) water-dispersible silica, and (c) a zirconium compound and/or a titanium compound, and further comprising (d) a thiocarbonyl-containing compound and/or (e) a water-soluble acrylic resin is disclosed.Type: GrantFiled: February 27, 2001Date of Patent: November 5, 2002Assignee: Nippon Paint Co., Ltd.Inventors: Toshiaki Shimakura, Motohiro Sasaki, Katsuyoshi Yamasoe, Hiromasa Nomura, Hiroshi Kanai, Kouhei Ueda
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Publication number: 20020155306Abstract: (1) A nickel-base alloy product having, on the surface thereof, an oxide film comprising at least two layers, namely a first layer mainly composed of Cr2O3 and having a chromium content of not less than 50% relative to the total amount of metal elements and a second layer occurring outside the first layer and mainly composed of MnCr2O4, wherein the grain size of Cr2O3 crystals in the first layer is 50 to 1,000 nm and the total oxide film thickness is 180 to 1,500 nm.Type: ApplicationFiled: April 10, 2002Publication date: October 24, 2002Inventors: Hiroyuki Anada, Kazuyoshi Kitamura, Toshihiro Imoto, Osamu Miyahara
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Patent number: 6464159Abstract: Paint-coated fishing component formed with recesses in which build-up of paint in the recesses is unlikely. A reel body (1) made of a magnesium alloy painted by electrodeposition includes a first side cover (6a) and a second side cover mounted to the sides of a frame. The first side cover (6a) is fastened by attaching screws (30) from the inner side of a first side plate (7a) to a plurality of protrusion portions (20) formed protruding on a rear surface. The protrusion portions (20) are provided with conduits (25) communicating recess portions formed with female threads to the immediate exterior. The conduits (25) are slits that are formed in the protrusion direction of the protrusions (20) or perpendicular to the protrusion direction, and are cut with a T-slot cutter, for example.Type: GrantFiled: April 27, 2001Date of Patent: October 15, 2002Assignee: Shimano Inc.Inventors: Shouji Nakagawa, Taisei Morise, Jun Sato, Ken'ichi Sugawara
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Patent number: 6455465Abstract: A photocatalyst coated product having excellent photocatalytic functions including a decomposing function and a hydrophilic function achieved by forming on the surface of a product to be treated a titania layer as a photocatalyst having high hardness and high adhesion with the product to be treated, using an easy blasting treatment. The photocatalyst coated product has a decomposing function including deodorizing, antibacterial and soil-resisting actions, and also a hydrophilic function, which is provided by having a titania layer formed on the surface of a product to be treated by injecting a titanium or titanium alloy-containing powder against the surface of the product to be treated which is a metal product, a ceramic or a mixture of them.Type: GrantFiled: August 10, 1999Date of Patent: September 24, 2002Assignee: Fuji Kihan Co., Ltd.Inventor: Yoshio Miyasaka