Contains An Atom Of Halogen, Organic Material Or Gaseous Sulfur Patents (Class 148/283)
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Patent number: 11898254Abstract: Disclosed are a processing method for fluorination of a fluorination-target component for semiconductor fabrication equipment, which may realize high density and high strength by fluorinating the fluorination-target component using a fluorinating gas excited into plasma, and at the same time, may significantly reduce plasma contaminant particles which are generated during formation of a fluoride coating, and a fluorinated component obtained by the method.Type: GrantFiled: October 14, 2022Date of Patent: February 13, 2024Assignee: WONIK QNC CorporationInventors: Yoonjae Yu, Seungyoung Oh, Eunyoung Choi, Joohee Jang, Soyoung Choi, Sanghyun Cho
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Patent number: 9601336Abstract: The present invention provides a method of fabricating a trench field-effect device. The method includes: providing a substrate including an epitaxial layer formed on a semiconductor substrate of the substrate and a trench formed in the epitaxial layer; forming a sacrificial dielectric layer on a bottom and a sidewall of the trench; forming a heavily-doped polysilicon region at the bottom, and removing part of the sacrificial dielectric layer not covered by the heavily-doped polysilicon region to expose an epitaxial layer of the sidewall; and oxidizing the heavily-doped polysilicon region and the epitaxial layer simultaneously and forming a thick oxide layer and a trench sidewall gate dielectric layer synchronously on the bottom and the sidewall, respectively; wherein thickness of the thick oxide layer is greater than that of the trench sidewall gate dielectric layer. The method is simple, and figure of merit of the fabricated trench field-effect device is reduced.Type: GrantFiled: July 18, 2012Date of Patent: March 21, 2017Assignee: CSMC TECHNOLOGIES FAB1 CO., LTD.Inventors: Hongwei Zhou, Dongyue Gao
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Publication number: 20150107722Abstract: The present invention pertains to a method for producing a black-plated steel sheet capable of being blackened in a short amount of time, and exhibiting an excellent ability to maintain a black appearance after processing. As an original sheet, the sheet used is a Zn-plating steel sheet which contains molten Al and Mg and has a Zn-plating layer containing molten Al and Mg, containing Al in the amount of 0.1-22.0 mass %, inclusive, and containing Mg in the amount of 0.1-1.5 mass %, inclusive. The plating layer is blackened by causing the molten-plating steel sheet to contact water vapor inside a tightly sealed container. When doing so, the concentration of oxygen inside the tightly sealed container is 13% or less.Type: ApplicationFiled: April 23, 2013Publication date: April 23, 2015Applicant: NISSHIN STEEL CO., LTDInventors: Tadashi Nakano, Masaya Yamamoto, Hirofumi Taketsu
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Publication number: 20150083276Abstract: The present invention pertains to a method for producing a black-plated steel sheet capable of being blackened in a short amount of time, and exhibiting an excellent ability to maintain a black appearance after processing. As an original sheet, the sheet used is a Zn-plating steel sheet which contains molten Al and Mg and has a Zn-plating layer containing molten Al and Mg, containing Al in the amount of 1.0-22.0 mass %, inclusive, and containing Mg in the amount of 1.5-10.0 mass %, inclusive. The plating layer is blackened by causing the molten-plating steel sheet to contact water vapor inside a tightly sealed container. When doing so, the concentration of oxygen inside the tightly sealed container is 13% or less.Type: ApplicationFiled: April 23, 2013Publication date: March 26, 2015Inventors: Tadashi Nakano, Masaya Yamamoto, Hirofumi Taketsu
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Publication number: 20140373679Abstract: A method for gas atomization of a titanium alloy, nickel alloy, or other alumina (Al2O3)-forming alloy wherein the atomized particles are exposed as they solidify and cool in a very short time to multiple gaseous reactive agents for the in-situ formation of a passivation reaction film on the atomized particles wherein the reaction film retains a precursor halogen alloying element that is subsequently introduced into a microstructure formed by subsequent thermally processing of the atomized particles to improve oxidation resistance.Type: ApplicationFiled: June 18, 2014Publication date: December 25, 2014Inventors: Andrew J. Heidloff, Joel R. Rieken, Iver E. Anderson
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Patent number: 8734562Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.Type: GrantFiled: January 16, 2012Date of Patent: May 27, 2014Assignee: Shoei Chemical Inc.Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
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Patent number: 8673091Abstract: Disclosed are methods for treating metal substrates, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The methods include contacting the substrate with a pretreatment composition that includes: (a) a group IIIB and/or IVB metal; (b) free fluorine; (c) a metal fluoride salt formed from a metal which forms a fluoride salt having a pKsp of at least 11; and (d) water.Type: GrantFiled: August 3, 2007Date of Patent: March 18, 2014Assignee: PPG Industries Ohio, IncInventors: Mark W. McMillen, Edward F. Rakiewicz
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Publication number: 20130269837Abstract: A composition for diffusion surface alloying of ferrocarbon alloys with chromium, consisting essentially of, by weight, about 25%-40% ferrochromium; about 54%-74% aluminum oxide or mixtures of aluminum oxide, silicon oxide and magnesium oxide in a weight ratio of about 3:2:1; about 1%-3% ammonium chloride; and a reducing agent consisting essentially of about 0.1%-3% aluminum, about 0.1%-2% silicon, about 0.1%-1.5% magnesium, or about 0.1%-3% of a mixture of aluminum, silicon and magnesium in a weight ratio of about 3:2:1. A method for diffusion surface alloying of a ferrocarbon workpiece with chromium, comprising providing the above composition; exposing the workpiece to the composition; and heating the workpiece and composition for sufficient time and temperature to form a chromium containing diffusion layer on the surface of the workpiece.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Inventors: Lidiya Omovna CHUNYAYEVA, Oleg Nikolayevich CHUNYAYEV, Leonid Leonidovich TOVAZHNYANSKYY
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Publication number: 20130181160Abstract: The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR?, in which R stands for C10-C29 groups and R? for H or C1-C8 groups.Type: ApplicationFiled: September 28, 2011Publication date: July 18, 2013Applicant: Chemetall GmbHInventor: Ulrich Wietelmann
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Patent number: 8470097Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?,and ?, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and ? is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.Type: GrantFiled: May 15, 2012Date of Patent: June 25, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: ChangMin Chun, Mark A Greaney, Thomas Bruno, Ian A Cody, Trikur A Ramanarayanan, LeRoy A Clavenna
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Patent number: 8430973Abstract: The present invention relates to a process for improving the heat and corrosion resistance of stainless steel by means of a novel passivation process. This process comprises a chemical treatment with an aqueous solution comprising a complexing agent combination of at least one oxidant, a subsequent rinsing and a subsequent treatment at elevated temperature in an oxygen-containing atmosphere. The stainless steel surfaces obtained according to the invention have a homogeneous passive layer having increased chemical resistance and resistance to thermal discoloration.Type: GrantFiled: February 22, 2008Date of Patent: April 30, 2013Assignee: Poligrat GmbHInventors: Olaf Böhme, Siegfried Piesslinger-Schweiger
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Publication number: 20130045360Abstract: Provided according to embodiments of the invention are methods of manufacturing implant devices. In methods described herein, implant devices are exposed to a reactive gas that includes a reactive species, and optionally, an inert gas, at elevated temperatures, for a duration sufficient to generate a high density of nanoscale structures on the exposed surface of the device. Also provided are implant devices formed by methods described herein.Type: ApplicationFiled: January 28, 2011Publication date: February 21, 2013Applicant: Georgia Tech Research CorporationInventors: Rolando Arturo Gittens Ibacache, Kenneth H. Sandhage, Rina Tannenbaum, Zvi Schwartz, Barbara D. Boyan
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Patent number: 8298350Abstract: A chromium-free conversion coating is prepared by the addition of inorganic salts to dispersions of conducting polymers which are then exposed to alloys of aluminum or other metals. Advantageously, the performance of the coating is comparable to that of known Cr (chromium)-based methods for a number of aluminum alloys having particular significance in the manufacture of aircraft.Type: GrantFiled: July 24, 2007Date of Patent: October 30, 2012Assignee: The Boeing CompanyInventors: Francisco Jesus Cano-Iranzo, Uxoa Izagirre-Etxeberria, Oihana Zubillaga-Alcorta, Patricia Santa Coloma-Mozo, Nieves Lapeña-rey
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Publication number: 20120267011Abstract: Brass components exhibiting excellent resistance to dezincification corrosion and stress corrosion cracking are prepared without, or with a reduced need for, corrosion inhibiting additives by developing a metal-sulfide rich barrier layer at the surfaces of the component. Brass components treated as disclosed exhibit corrosion resistance as determined by standardized testing that yields dezincification penetration less than 200 microns in depth and exhibits no stress corrosion cracking.Type: ApplicationFiled: November 22, 2011Publication date: October 25, 2012Inventor: Benjamin L. Lawrence
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Patent number: 8293029Abstract: 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: GrantFiled: January 31, 2006Date of Patent: October 23, 2012Assignee: Henkel AG & Co. KGaAInventors: Ulrich Jueptner, Joerg Becker
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Publication number: 20120073568Abstract: Methods for depositing a coating on a metal surface can include heating a metal surface to a temperature not greater than its melting point; while heating the metal surface, applying a vacuum thereto; and while heating the metal surface, releasing the vacuum and backfilling with a first purge gas, where the first purge gas is reactive with the heated metal surface so as to deposit at least one layer of a coating thereon. The present methods can be used to deposit a coating in situ during the fabrication of solar receivers, in which the solar receivers contain an annulus defined by a metal tube as the inner surface and a material that is at least partially transparent to solar radiation as the outer surface.Type: ApplicationFiled: September 19, 2011Publication date: March 29, 2012Applicant: APPLIED NANSTRUCTURED SOLUTIONS, LLC.Inventors: Matthew M. KAPELANCZYK, Tushar K. Shah
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Patent number: 8128725Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.Type: GrantFiled: February 29, 2008Date of Patent: March 6, 2012Assignee: Shoei Chemical Inc.Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
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Publication number: 20110293365Abstract: A cement plant refractory anchor (10) comprising a body formed of stainless steel, wherein external surfaces of said body have a surface diffusion coating of an iron aluminide phase formed by a high temperature pack cementation process.Type: ApplicationFiled: December 11, 2009Publication date: December 1, 2011Applicant: VESUVIUS CRUCIBLE COMPANYInventors: Nick Lebaut, Nan Xu
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Patent number: 7905964Abstract: Process for the passivation of metallic surfaces, in particular of strip metals, by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and at least one wax.Type: GrantFiled: June 13, 2006Date of Patent: March 15, 2011Assignee: BASF SEInventors: Helmut Witteler, Walter Bertkau, Thomas Heidenfelder, Alexander Göthlich
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Patent number: 7829151Abstract: 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: GrantFiled: March 17, 2004Date of Patent: November 9, 2010Assignee: BEHR GmbH & Co. KGInventors: Snjezana Boger, Peter Englert, Mathias Pfitzer, Ingo Trautwein, Sabine Sedlmeir
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Patent number: 7811391Abstract: This invention comprises an acidic aqueous solution for treating metal substrates to improve the adhesion bonding and corrosion protection of the metal surface which comprises effective amounts of water soluble trivalent chromium compounds, fluorozirconates, effective amounts of at least one corrosion inhibitors such as benzotriazole, fluorometallic compounds, zinc compounds, thickeners, surfactants, and at least about 0.001 mole per liter of the acidic solution of a polyhydroxy and/or carboxylic compound as a stabilizing agent for the aqueous solution.Type: GrantFiled: April 21, 2005Date of Patent: October 12, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Craig A. Matzdorf, William C. Nickerson, Jr.
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Patent number: 7794841Abstract: Articles of manufacture and methods of making and using same concern a container having an internal space and a passivated internal metal surface. The container contains a composition of an acid gas and a balance gas contained within the internal space and in contact with the passivated internal metal surface. The stability of the acid gas concentration over time is enhanced.Type: GrantFiled: June 28, 2005Date of Patent: September 14, 2010Assignee: American Air Liquide, Inc.Inventors: Robert Benesch, Malik Haouchine, Tracey Jacksier
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Patent number: 7662241Abstract: 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: GrantFiled: February 23, 2004Date of Patent: February 16, 2010Assignee: Wayne Pigment Corp.Inventor: John Sinko
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Patent number: 7531051Abstract: The present invention is the method for surface treatment of a metal material containing iron and/or zinc, containing component (A) and component (B); where (A) is a compound containing at least one metal element selected from the group consisting of Ti, Zr, Hf and Si, (B) is a compound containing fluorine as a supplying source of HF, wherein the ratio K=A/B between the total mole weight A of metal elements of Ti, Zr, Hf and Si in the compound of component (A) and the mole weight B which when the total fluorine atoms in the fluorine-containing compound of component (B) is converted to HF is within the range of 0.06?K?0.18, and the concentration of component (A) indicated by the total mole concentration of metal elements of Ti, Zr, Hf and Si is within the region of 0.05 to 100 m mol/L. To the treating solution for surface treatment, at least one compound containing at least one metal element selected from the group consisting of Ag, Al, Cu, Fe, Mn, Mg, Ni, Co and Zn can be blended.Type: GrantFiled: June 12, 2002Date of Patent: May 12, 2009Assignees: Nihon Parkerizing Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Daihatsu Motor Co., Ltd.Inventors: Takaomi Nakayama, Hiroyuki Sato, Tetsuo Ootsuki, Tadashi Matsushita, Eisaku Okada, Fumiya Yoshida, Katsuhiro Shiota
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Publication number: 20090078340Abstract: A chemical treatment method in which an object to be treated is treated with a chemical treating agent to form a chemical conversion coating, in which the object to be treated has at least one aluminum-plated steel sheet and at least one member selected from the group consisting of cold-rolled steel sheets, zinc-plated steel sheets, and aluminum sheets and the chemical treating agent is one which has zirconium, fluorine, and an aminated silane coupling agent and in which the zirconium content is 100-700 ppm in terms of metal amount and the fluorine/zirconium ratio is 3.5-7.0 by mole. A sufficient coating amount can be ensured on the surface of a zinc deposit, cold-rolled steel sheet, zinc-plated steel sheet, aluminum-plated steel sheet, or the like and a chemical conversion coating having sufficient base-hiding properties and sufficient adhesion can be formed.Type: ApplicationFiled: April 27, 2006Publication date: March 26, 2009Inventors: Katsutoshi Ando, Yasuhito Murai, Kazuhiro Makino, Shinya Nishida, Masanobu Futsuhara, Toshiaki Shimakura
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Publication number: 20090025841Abstract: Surface-modified metal fuels, which improve the stability in storage of pyrotechnics and methods for manufacturing such fuels, are provided. Improved storage stability is conferred either by alloying the precursor metal prior to the powder production process, or by forming an enhanced stability coating on the surface of the metal powders during the powder production process.Type: ApplicationFiled: July 3, 2008Publication date: January 29, 2009Inventor: Paul Smith
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Publication number: 20090020187Abstract: An apparatus and process for protecting metal from oxidation during metal forming operations. A salt is deposited onto at least a portion of a surface of the metal. The salt is heated in a protective environment until the salt melts on the metal to form a coated metal. The protective environment may then be removed and the coated metal may be exposed to an active environment. The coated metal may then be formed using standard metal forming processes. In alternative embodiments salts are selected for particular melting and vaporizing temperatures. An automated apparatus for coating a metal object with a salt may be provided. An applicator is configured to deposit the salt onto a surface of the metal object to form a salted metal object. A furnace is configured to receive the salted metal object and to melt at least a portion of the salt on the surface of the salted metal object.Type: ApplicationFiled: July 17, 2007Publication date: January 22, 2009Inventors: Steven W. Russell, Jerrid S. Holt, Jonathan S. Morrell
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Patent number: 7371272Abstract: A modifier for hydrophilicity and a hydrophilic modification method capable of suppressing not only the odor of the resulting hydrophilic coat itself, but also the unpleasant odor emanation after exposure to odorants and retaining the hydrophilicity even during a long period of use. The modifier for hydrophilicity includes a modified polyvinyl alcohol containing a group represented by formula (I) on a side chain thereof. In the formula, n represents an integer of 1 to 500, R1 represents a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and R2 represents a hydrogen atom or a methyl group. The group represented by formula (I) accounts for 0.1 to 10 mole percent of the sum of hydroxyl groups and acetoxy groups in the modified polyvinyl alcohol, and the modified polyvinyl alcohol accounts for 0.Type: GrantFiled: March 26, 2002Date of Patent: May 13, 2008Assignee: Nippon Paint Co., Ltd.Inventors: Toshio Inbe, Susumu Maekawa, Akira Ushio, Koichi Saito
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Patent number: 7232528Abstract: The surface treatment agent for copper and copper alloys contains hydrogen peroxide, a mineral acid, an azole compound, silver ion and a halide ion. The surface treatment agent for copper and copper alloys is useful in the production of printed wiring boards in electronics industry. The surface treatment agent roughens the surface of copper and copper alloys. Particularly, the surface treatment agent can form a uniform and undulation-free roughened surface on copper-clad substrates having plated mirror surface, this having been difficult in conventional techniques, thereby significantly improving the adhesion to etching resists, solder resists, in addition, to prepregs and a resin for mounting electronic parts.Type: GrantFiled: June 18, 2002Date of Patent: June 19, 2007Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akira Hosomi, Naoki Kogure, Kenichi Moriyama, Kenichi Takahashi, Atsushi Hosoda, Kazuhiko Ikeda
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Patent number: 7186305Abstract: A process is described for treating metal surfaces with a composition comprising an oxidizer, an acid, a corrosion inhibitor, an unsaturated alkyl substituted with an aromatic or non-aromatic cyclic groups, and optionally but preferably a source of adhesion enhancing species selected from the group consisting of molybdates, tungstates, tantalates, niobates, vanadates, isopoly or heteropoly acids of molybdenum, tungsten, tantalum, niobium, vanadium, and combinations of any of the foregoing, an organic nitro compound, and a source of halide ions in order to increase the adhesion of polymeric materials to the metal surface.Type: GrantFiled: November 26, 2002Date of Patent: March 6, 2007Inventor: Donald Ferrier
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Patent number: 7134199Abstract: A process including providing a semiconductor device including a bond pad, and an under bump metallurgy overlying the bond pad. Forming a solder structure over the under bump metallurgy, and wherein the solder structure includes an outer layer including tin oxide. Producing a plasma from at least one of CF4 and SF6, and exposing the solder structure to the plasma. Heating the solder structure and cooling the same to provide a solder bump on the semiconductor device.Type: GrantFiled: June 13, 2002Date of Patent: November 14, 2006Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Chao-Yuan Su, Chia-Fu Lin, Hsin-Hui Lee, Yen-Ming Chen, Kai-Ming Ching, Li-Chih Chen, Wen-Chang Kuo, Yue-Ying Jian
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Patent number: 6951691Abstract: This invention relates to a surface treatment method comprising the steps of providing a treating solution containing a specific ammonium compound or aqueous ammonia, and magnesium silicofluoride, heating the treating solution to a temperature of 70 to 100° C., and soaking aluminum or an aluminum alloy in the treating solution; a piston having a surface coated with a film consisting of a mixture of NH4MgAlF6 and MgAlF5.1.5H2O or a mixture of NH4MgAlF6 and MgAl2F8.2H2O; and a sliding member made of aluminum or the like wherein the whole surface of the sliding member or the sliding surface thereof is coated with a film which consists of either of the aforesaid mixtures, has a cubic crystal structure, and shows no crystalline orientation.Type: GrantFiled: June 20, 2003Date of Patent: October 4, 2005Assignee: Suzuki Motor CorporationInventors: Masaya Nomura, Yoshinobu Ozaki
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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: 6881491Abstract: An aluminum alloy article is cleaned to remove oxides and organic matter from a coatable surface, coated with a composition comprising an organic resin and a fluorine compound, and then heated to an elevated temperature to decompose the organic resin and at least a portion of the fluorine compound. After heating the coated surface is left with a protective oxyfluoride film that prevents blistering and hydrogen pickup and promotes hydrogen degassing from the article.Type: GrantFiled: May 16, 2003Date of Patent: April 19, 2005Assignee: Alcoa Inc.Inventors: Sally A. Jankosky, Susanne M. Opalka, Paula L. Kolek, Joseph P. Harenski, Roger W. Kaufold, Larry F. Wieserman
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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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Publication number: 20040194858Abstract: This relates to an improvement to the process of aluminization or activated cementation in which a donor cement containing the aluminium is attacked at high temperature and in a neutral or reducing atmosphere by a gaseous ammonium halide to form a gaseous aluminium halide which decomposes on contact with a nickel-based substrate depositing aluminium metal thereon.Type: ApplicationFiled: March 31, 2004Publication date: October 7, 2004Inventors: Marie-Pierre Bacos, Pierre Josso, Serge Naveos
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Patent number: 6780256Abstract: An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion of subsequently coated materials such as sealants and paints. The solution of the composition and method of application consume free acidity otherwise left on the metal surface, and obviate the need for subsequent rinsing or extensive drying or stoving operations. The composition includes an aqueous solution including water, a zinc source, phosphoric acid, a polyhydric compound (preferably pentaerythritol), a metal salt, and optionally, an oxidizer.Type: GrantFiled: August 27, 2002Date of Patent: August 24, 2004Assignee: Bulk Chemicals, Inc.Inventor: José B. Rivera
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Publication number: 20040144451Abstract: It is an object of the present invention to provide a pretreatment method for coating, which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum.Type: ApplicationFiled: December 23, 2003Publication date: July 29, 2004Applicant: Nippon Paint Co., Ltd.Inventors: Masahiko Matsukawa, Kazuhiro Makino, Toshiaki Shimakura
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Patent number: 6764553Abstract: Corrosion resistant, hydrophilic coatings on the surface of aluminum and aluminum alloys may be formed using aqueous compositions containing fluorometallates such as H2TiF6 or H2ZrF6 and vanadium compounds such as decavanadates. To minimize the odor evolved from the conversion coatings it is preferred for a specified oxide, hydroxide, carbonate, or alkoxide to also be present in or added to the aqueous composition.Type: GrantFiled: September 14, 2001Date of Patent: July 20, 2004Assignee: Henkel CorporationInventor: Shawn E. Dolan
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Patent number: 6733600Abstract: A maraging steel is subjected to the aging to have a hardness of more than 500 Hv. A nitrided case is formed to have a depth that is about 20% to 50% to a ½ thickness of the maraging steel plate. An endless ring for a metal belt is constructed by the above maraging steel. According to methods of manufacturing the maraging steel and the endless ring, the nitrided case having the depth that is 20% to 50% of a distance from a plate surface to a center can be formed by executing an aging to have the hardness of more than 500 Hv, then executing a nitriding in the nitrogen atmosphere to which organic chloride is added.Type: GrantFiled: July 18, 2001Date of Patent: May 11, 2004Assignees: Nissan Motor Co., Ltd., Dowa Mining Co., Ltd.Inventors: Yuichi Heishi, Masahiro Suzuki, Ikuo Tani, Youichi Watanabe, Shunzou Umegaki, Kiyotaka Akimoto, Keiji Yokose
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Patent number: 6730179Abstract: Method for localized aluminide coating applied for the first time or as repair includes creating a contained space by disposing coating material comprising an aluminum source and a halide activator at least partially over and in an out-of-contact relation with a target surface of a metal substrate. Heating the substrate to a temperature to cause the aluminum source to react with the halide activator and the substrate results in diffusion aluminide coating of the targeted surface. An article comprising a target surface of a metal substrate, said surface bounding a contained space, and a coating tape comprising an aluminum source and a halide activator and disposed in an out-of-contact relation at least partially over the contained space whereby, when the substrate is heated to a temperature to cause the halide activator to react with the aluminum source, a diffusion aluminide coating is formed on the target surface.Type: GrantFiled: August 31, 2001Date of Patent: May 4, 2004Assignee: Sermatech International Inc.Inventor: Thomas Kircher
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Patent number: 6699603Abstract: A stainless steel with a passive state fluorinated film formed thereon, which is easy to construct and does not produce particles even when it is welded, and a device using the same. The stainless steel does not cause leakage even when said film is formed on a sealing surface of a joint and a valve seat surface. The stainless steel is characterized in that at least a part of the surface coated with a passive state fluorinated film not thicker than 190Å consisting of a metal fluoride as a main component.Type: GrantFiled: December 26, 2001Date of Patent: March 2, 2004Assignee: Stella Chemifa Kabushiki KaishaInventors: Tadahiro Ohmi, Hirohisa Kikuyama, Masayuki Miyashita, Hiroto Izumi, Takanobu Kujime
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Publication number: 20040020564Abstract: An aqueous solution for producing a conversion layer on metal surfaces, which has a pH in the range 1.5 to 6 and which contains the complex fluorides of Ti, Zr, Hf, Si and/or B, in an amount such that the concentration of Ti, Zr, Hf, Si and/or B is 20 to 500 mg/l, and 0.1 to 2 g/l of adhesion-promoting lacquer additives and wherein the composition of the aqueous solution is selected so that no crystalline zinc-containing phosphate layer is produced on the metallic surface.Type: ApplicationFiled: December 20, 2002Publication date: February 5, 2004Inventors: Bernd Schenzle, Heike Quellhorst, Alina M. Koch
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Patent number: 6632293Abstract: A hydrogen containing material comprises a first compound including hydrogen containing material and fluoride, and a second compound including a metal which becomes highly reactive with hydrogen when the metal becomes a compound including fluorine, and a compound including fluorine. The first compound and the second compound are integrally formed into a one-piece layer on the surface of the hydrogen containing material. The metal which becomes highly reactive with hydrogen when the metal becomes a compound including fluorine is at least one metal selected from a rare earth metal, rare earth alloy, Fe, Al, Mg, Ca, Mn, Zn, Zr, Li, or alloys comprising these elements.Type: GrantFiled: October 31, 2000Date of Patent: October 14, 2003Assignees: The Japan Steel Works, Ltd., Stella Chemifa CorporationInventors: Fumiaki Aono, Toshiharu Tabata, Akiyoshi Kosuge, Hirohisa Kikuyama, Hiroto Izumi
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Patent number: 6607609Abstract: This invention relates to a surface treatment method comprising the steps of providing a treating solution containing a specific ammonium compound or aqueous ammonia, and magnesium silicofluoride, heating the treating solution to a temperature of 70 to 100° C., and soaking aluminum or an aluminum alloy in the treating solution; a piston having a surface coated with a film consisting of a mixture of NH4MgAlF6 and MgAlF5. 1.5H2O or a mixture of NH4MgAlF6 and MgAl2F8.2H2O; and a sliding member made of aluminum or the like wherein the whole surface of the sliding member or the sliding surface thereof is coated with a film which consists of either of the aforesaid mixtures, has a cubic crystal structure, and shows no crystalline orientation.Type: GrantFiled: September 25, 2002Date of Patent: August 19, 2003Assignee: Suzuki Motor CorporationInventors: Masaya Nomura, Yoshinobu Ozaki
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Patent number: 6605161Abstract: A deposition process including applying an inoculant to at least a portion of the surface of a metal component, and then forming an intermetallic layer at the inoculant surface, such as by exposing at least the coated surface portion to a deposition environment.Type: GrantFiled: June 5, 2001Date of Patent: August 12, 2003Assignee: Aeromet Technologies, Inc.Inventor: David C. Fairbourn
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Patent number: 6602356Abstract: A method of depositing by chemical vapor deposition a modified platinum aluminide diffusion coating onto a superalloy substrate comprising the steps of applying a layer of a platinum group metal to the superalloy substrate; passing an externally generated aluminum halide gas through an internal gas generator which is integral with a retort, the internal gas generator generating a modified halide gas; and co-depositing aluminum and modifier onto the superalloy substrate. In one form, the modified halide gas is hafnium chloride and the modifier is hafnium with the modified platinum aluminum bond coat comprising a single phase additive layer of platinum aluminide with at least about 0.5 percent hafnium by weight percent and about 1 to about 15 weight percent of hafnium in the boundary between a diffusion layer and the additive layer. The bond coat produced by this method is also claimed.Type: GrantFiled: September 20, 2000Date of Patent: August 5, 2003Assignee: General Electric CompanyInventors: Bangalore A. Nagaraj, Jeffrey L. Williams
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Patent number: 6596097Abstract: A method for the immobilization of a radioactive anion on the surface of a metal substrate, said method comprising treating the substrate with an oxidizing agent in the presence of a solution of a radioactive anion which forms an insoluble salt with ions of said metal. Preferably, a binding agent will also be present. Preferably, the metal is silver, the radioactive anion is 125I− and the binding agent comprises bromide ions.Type: GrantFiled: May 24, 2000Date of Patent: July 22, 2003Assignee: Amersham, PLCInventors: Robert Snow, Gregory McIntire, Edward Bacon, Evan Gustow
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Patent number: 6592941Abstract: A method of forming an aluminum silicon diffusion coating on a surface of an alloy product utilizes a diffusion mixture containing by weight 1% to 5% aluminum, 0.5% to 5% silicon, 0.5% to 3% ammonium halide activator and the balance an inert filler. The product to be coated is placed in a retort with the diffusion mixture covering the product surfaces to be coated. Upon heating aluminum and silicon will diffuse onto the product surfaces forming the aluminum and silicon diffusion coating.Type: GrantFiled: November 8, 1996Date of Patent: July 15, 2003Assignee: Alon, Inc.Inventors: George T. Bayer, Kim A. Wynns
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Patent number: 6524403Abstract: A non-chrome containing composition and process are disclosed for enhancing the corrosion resistance of zinc or zinc alloy surfaces. The composition comprises a source of titanium ions or titanates, an oxidant and fluorides or complex fluorides. The composition also preferably comprises an organic acid and/or a Group II metal compound, preferably a Group II metal chloride.Type: GrantFiled: August 23, 2001Date of Patent: February 25, 2003Inventors: Ian Bartlett, Ernest Long, Anthony Rowan