Cobalt Base Patents (Class 420/435)
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Patent number: 7771650Abstract: A material comprising cobalt (Co), platinum (Pt) and phosphorus (P) having a composition of 94-98 wt % Co, 0-1 wt % Pt and 2-4 wt % P. The material may be subjected to annealing at a temperature between 100 and 500 degrees Celsius. The material is formed by electroplating a substrate in a suitable electrochemical bath. The electroplated CoPtP material forms a layer on the substrate. The CoPtP material has enhanced perpendicular magnetic properties and may be advantageous for use in microelectromechanical system (MEMS) devices.Type: GrantFiled: January 24, 2006Date of Patent: August 10, 2010Assignee: Sony CorporationInventors: Wei Beng Ng, Akio Takada
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Publication number: 20100196190Abstract: The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnetic fraction (CN) obtained form the previous stage (a); (c) optionally, neutralization (3) of the effluent from the leaching and/or solid-liquid separation stages (4); (d) treatment of the effluents from stages (b) or (c) using an ion-exchange hybrid system (5) comprising at least one circuit for removal of impurities and at least one circuit for recovery of nickel and cobalt; (e) elution (6) of the ion-exchange resin used; (f) separation, purification, and recovery (7) of the nickel and cobalt.Type: ApplicationFiled: November 11, 2007Publication date: August 5, 2010Applicant: COMPANHIA VALE DO RIO DOCEInventor: Flavia Dutra Mendes
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Publication number: 20100135845Abstract: A method for generating metallic nanomaterials using acetylenic-bridged metal-carbonyl complexes as a precursor allows control of nanoparticle properties. The novel method produced metallic nanomaterials resistant to oxidation.Type: ApplicationFiled: September 14, 2007Publication date: June 3, 2010Inventors: Challa S.S.R. Kumar, Rohini M. de Silva, Josef Hormes
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Publication number: 20100061883Abstract: A cobalt-base superalloy chemical composition is disclosed which includes, in % by weight: 25-28 W; 3-8 Al; 0.5-6 Ta; 0-3 Mo; 0.01-0.2 C; 0.01-0.1 Hf; 0.001-0.05 B; 0.01-0.1 Si; and remainder Co and unavoidable impurities. This superalloy can be strengthened by ?? dispersions and further dispersion mechanisms. Exemplary compositions can provide good oxidation properties and improved strength values at high temperatures.Type: ApplicationFiled: September 4, 2009Publication date: March 11, 2010Applicant: ALSTOM Technology LtdInventors: Mohamed Nazmy, Andreas Künzler, Markus Staubli
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Publication number: 20100061879Abstract: The invention relates to novel pre-alloyed metal powders a method for production and use thereof.Type: ApplicationFiled: November 28, 2007Publication date: March 11, 2010Applicant: H.C. Starck GmbHInventors: Bernd Mende, Gerhard Gille, Ines Lamprecht
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Publication number: 20090270251Abstract: The present invention is directed to cobalt compounds and methods for making such metal oxide compositions, specifically, metal oxide compositions having high surface area, high metal/metal oxide content, and/or thermal stability with inexpensive and easy to handle materials.Type: ApplicationFiled: November 1, 2007Publication date: October 29, 2009Applicant: Symyx Technologies, Inc.Inventor: Alfred Hagemeyer
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Patent number: 7608172Abstract: The method manufactures high-purity ferromagnetic sputter targets by cryogenic working the sputter target blank at a temperature below at least ?50° C. to impart at least about 5 percent strain into the sputter target blank to increase PTF uniformity of the target blank. The sputter target blank is a nonferrous metal selected from the group consisting of cobalt and nickel; and the nonferrous metal has a purity of at least about 99.99 weight percent. Finally, fabricating the sputter target blank forms a sputter target having an improved PTF uniformity arising from the cryogenic working.Type: GrantFiled: August 11, 2003Date of Patent: October 27, 2009Assignee: Praxair S.T. Technology, Inc.Inventors: Andrew C. Perry, Holger J. Koenigsmann, David E. Dombrowski, Thomas J. Hunt
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Publication number: 20090257907Abstract: SmCo-based alloy nanoparticles composed mainly of a SmCo-based alloy containing Sm and Co as constituent elements, wherein the content of metal elements other than Sm and Co is 0.05-20 wt % with respect to the SmCo-based alloy.Type: ApplicationFiled: March 4, 2009Publication date: October 15, 2009Applicants: TDK Corporation, Tokyo University of Science Educational Foundation Administrative OrganizationInventors: Mamoru Satoh, Naoki Toshima, Mutsuko Kinjo, Haruki Kinjo, Shiho Tokonami
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Patent number: 7591911Abstract: A gold-cobalt based amorphous alloy plated film consisting of a homogeneous amorphous phase not having microcrystals is formed by electroplating conducted by use of an electroplating bath containing a gold cyanide salt in a concentration of 0.01 to 0.1 mol/dm3 in terms of gold, a cobalt salt in a concentration of 0.02 to 0.2 mol/dm3 in terms of cobalt, and a tungstate in a concentration of 0.1 to 0.5 mol/dm3 in terms of tungsten. The gold-cobalt based amorphous alloy plated film obtained consists of a homogeneous amorphous phase not having microcrystals, and has an enhanced hardness while retaining the good contact resistance and chemical stability intrinsic of gold on such levels as to be free of problems on a practical use basis; therefore, the gold-cobalt based amorphous alloy plated film is effective for use as a contact material in electric and electronic component parts such as relays.Type: GrantFiled: September 29, 2006Date of Patent: September 22, 2009Assignees: Kanto Kagaku Kabushiki Kaisha, Waseda UniversityInventors: Kazutaka Senda, Masaru Kato, Tetsuya Osaka, Yutaka Okinaka
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Patent number: 7582171Abstract: A high-strength, soft-magnetic iron-cobalt-vanadium alloy selection is proposed, consisting of 35.0?Co?55.0% by weight, 0.75?V?2.5% by weight, O?Ta+2×Nb?0.8% by weight, 0.3<Zr?1.5% by weight, remainder Fe and melting-related and/or incidental impurities. This zirconium-containing alloy selection has excellent mechanical properties, in particular a very high yield strength, high inductances and particularly low coercive forces. It is eminently suitable for use as a material for magnetic bearings used in the aircraft industry.Type: GrantFiled: May 7, 2004Date of Patent: September 1, 2009Assignee: Vacuumschmelze GmbH & Co. KGInventors: Joachim Gerster, Johannes Tenbrink
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Publication number: 20090214417Abstract: A method of making a cobalt-boron alloy includes contacting an aqueous suspension of an oxide of cobalt, particularly a highly crystalline cobalt oxide, with a borohydride such as sodium borohydride. The resulting alloy may be used as a catalyst to produce gaseous hydrogen by hydrolysis of aqueous sodium borohydride.Type: ApplicationFiled: December 26, 2008Publication date: August 27, 2009Applicant: University of DelawareInventors: Ajay K. Prasad, Suresh G. Advani, Krishnan Palanichamy
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Publication number: 20090181183Abstract: A metal nanoparticle composition includes a thermally decomposable or UV decomposable stabilizer. A method of forming conductive features on a substrate, includes providing a solution containing metal nanoparticles with a stabilizer; and liquid depositing the solution onto the substrate, wherein during the deposition or following the deposition of the solution onto the substrate, decomposing and removing the stabilizer, by thermal treatment or by UV treatment, at a temperature below about 180° C. to form conductive features on the substrate.Type: ApplicationFiled: January 14, 2008Publication date: July 16, 2009Applicant: XEROX CORPORATIONInventors: Yuning LI, Yiliang WU, Hualong PAN, Ping LIU, Paul F. SMITH, Hadi K. MAHABADI
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Patent number: 7553793Abstract: A method for recovering a catalyst for a fuel cell includes a collection step in which a catalyst is collected by attracting, using a magnetic force, a magnetic material contained in at least one of the catalyst and a carrier on which the catalyst is supported. A system for recovering a catalyst for a fuel cell includes a collection device that attracts, using a magnetic force, a magnetic material contained in at least one of a catalyst and a carrier on which the catalyst is supported.Type: GrantFiled: September 20, 2006Date of Patent: June 30, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventor: Kazuhiro Taniwaki
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Patent number: 7491361Abstract: A burning-on alloy for the production of ceramically veneered dental restorations, containing: cobalt 55-65 percent by weight, chromium 20-30 percent by weight, tungsten and/or where the sum of the content by weight molybdenum of molybdenum and half the content by weight of tungsten is in the range of 4-12 percent by weight, gallium 2-4 percent by weight, silicon 0-2 percent by weight, manganese 0.05-1.9 percent by weight, nitrogen 0-0.4 percent by weight, carbon 0-0.02 percent by weight, vanadium, niobium, in total 0-5 percent by weight, tantalum, iron, titanium, zirconium, hafnium nickel 0-0.1 percent by weight, rhenium, gold, in total 0-0.09 percent by weight, silver, copper other metals, 0-1 percent by weight, semi-metals and impurities where the percent by weight data are in each case based on the total weight of the alloy, is described.Type: GrantFiled: February 16, 2006Date of Patent: February 17, 2009Assignee: BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KGInventor: Roland Strietzel
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Publication number: 20080232997Abstract: A method for processing CoPt alloys with improved magnetic properties. The method includes sealing a sample of a CoPt alloy in an evacuated quartz tube, and heating the alloy to a temperature of approximately 1000 degrees C. to homogenize the alloy for approximately 3 hours. The sample is then cooled at a controlled cooling rate of 120-150 degrees C. per minute to 600 degrees C. The sample is then held at 600 degrees C. for 10 hours to promote isothermal ordering. Finally, the sample is quenched in mineral oil.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Inventors: Baozhi Cui, Ke Han
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Publication number: 20080226843Abstract: This invention relates to laser cladding of components used in high temperature-corrosive applications, such as those associated with metallurgical vessels' lances, nozzles and tuyeres, for extending their service life under such severe conditions. In particular, this invention relates to a method for applying a high melting point material onto a substrate, said substrate having a melting point temperature below the melting point temperature of the high melting point material, comprising: (a) moving a laser beam generated from a laser over the surface of said substrate, said laser beam comprised of wavelengths from about 300 to about 10,600 nanometers; (h) providing a metal, alloy, or metal-alloy composite powder to the surface of said substrate; and (c) generating sufficient power to the laser to superficially heat said substrate and to effect a fusion bond between the metal, alloy or metal-alloy composite powder and the surface of said substrate.Type: ApplicationFiled: June 20, 2006Publication date: September 18, 2008Inventors: Harold Haruhisa Fukubayashi, Roland C. Gassmann
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Publication number: 20080202641Abstract: A nickel based alloy coating and a method for applying the nickel based alloy as a coating to a substrate. The nickel based alloy comprises about 0.1-15% rhenium, about 5-55% of an element selected from the group consisting of cobalt, iron and combinations thereof, sulfur included as a microalloying addition in amounts from about 100 parts per million (ppm) to about 300 ppm, the balance nickel and incidental impurities. The nickel-based alloy of the present invention is applied to a substrate, usually an electromechanical device such as a MEMS, by well-known plating techniques. However, the plating bath must include sufficient sulfur to result in deposition of 100-300 ppm sulfur as a microalloyed element. The coated substrate is heat treated to develop a two phase microstructure in the coating.Type: ApplicationFiled: June 22, 2007Publication date: August 28, 2008Applicant: TYCO ELECTRONICS CORPORATIONInventors: Robert D. HILTY, Valerie LAWRENCE, George J. CHOU
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Publication number: 20080190865Abstract: A stabilized, chemically reactive, metallic nano-material effective for degradation of chlorinated organic compounds in soils, sediments and groundwater. The nano-material is composed of a magnetic metal nanoparticle and a carbohydrate stabilizer bound to the nanoparticle. The preferred metal nanoparticle is iron and the preferred carbohydrate stabilizer is either a starch or a water soluble cellulose such as sodium carboxymethyl cellulose. The nanoparticle may be either mono-metallic, bi-metallic or multi-metallic in nature, but is preferably bi-metallic wherein it is coated with a secondary catalytic metal coating, preferably palladium. A method of making the metallic nano-material is further disclosed wherein a solution of the metal nanoparticle and carbohydrate stabilizer is prepared, and the nanoparticle is then reduced under inert conditions.Type: ApplicationFiled: June 30, 2005Publication date: August 14, 2008Inventors: Dongye Zhao, Feng He
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Publication number: 20080181810Abstract: A magnetic film of an oxide-containing cobalt base alloy has a smaller coercivity difference than conventional magnetic films. A target material and a sputtering target of the invention are capable of forming the magnetic film. A manufacturing method of the target material is also disclosed. The magnetic film of an oxide-containing cobalt base alloy and the oxide-containing cobalt base alloy target material each have a Fe content of 100 ppm or less. The sputtering target includes the target material bonded to a backing plate. The manufacturing method of the oxide-containing cobalt base alloy target material includes preparing a Co—Cr alloy by melting Cr ingot and at least one Co source selected from Co ingot and Co powder, preparing Co—Cr alloy powder by atomizing the Co—Cr alloy, preparing a mixed powder by mixing the Co—Cr alloy powder, Pt powder and oxide powder, and sintering the mixed powder after forming or simultaneously with forming.Type: ApplicationFiled: September 18, 2007Publication date: July 31, 2008Applicant: MITSUI MINING & SMELTING CO., LTD.Inventor: Kazuteru Kato
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Publication number: 20080173543Abstract: A method of forming Heusler or Heusler-like alloys of formula X2YZ or XYZ comprises providing a crucible comprised of at least one metal oxide material thermodynamically stable to molten transition metals; supplying predetermined amounts of constituent elements or master alloy materials of the alloy to the crucible; and melting the constituent elements or master alloy materials under vacuum or a partial pressure of an inert gas to form alloys containing less than about 50 ppm oxygen. Crack-free alloys are formed by casting the alloys in a mold utilizing a multi-stage stress-relieving, heat-assisted casting process. Also disclosed are crack-free Heusler and Heusler-like alloys of formula X2YZ or XYZ containing less than about 50 ppm oxygen and deposition sources, e.g., sputtering targets, fabricated therefrom.Type: ApplicationFiled: January 17, 2008Publication date: July 24, 2008Applicant: HERAEUS INC.Inventor: Abdelouahab ZIANI
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Publication number: 20080170959Abstract: A sputter target is provided with a first elemental phase of a first material, the first material being either cobalt or tungsten, a first intermetallic phase including the first material and a second material, the second material being either tungsten or cobalt and different from the first material, the first material in a greater atomic percentage than the second material, and a second intermetallic phase including the second material and the first material, the second material in a greater atomic percentage than the first material. The sputter target includes 20-80 at. % cobalt, and has a density greater than 99% of a theoretical maximum density thereof. The sputter target is fabricated by selecting a cobalt powder and a tungsten powder having the same particle size distribution, blending the cobalt powder and the tungsten powder to form a blended powder, canning the blended powder, hot pressing the blended powder to form a solid, and machining the solid to form a sputter target.Type: ApplicationFiled: January 11, 2007Publication date: July 17, 2008Applicant: Heraeus IncorporatedInventors: Fenglin Yang, Bernd Kunkel, Steven Roger Kennedy, Anirban Das
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Patent number: 7381282Abstract: A Co alloy target comprising 1 to 10 atomic % of Zr and 1 to 10 atomic % of Nb and/or Ta, the balance being unavoidable impurities and Co, is produced by rapidly solidifying a melt of the Co alloy to produce an alloy powder, classifying the alloy powder to maximum particle size of 500 ?m or less, and pressure-sintering the classified alloy powder.Type: GrantFiled: April 5, 2005Date of Patent: June 3, 2008Assignee: Hitachi Metals, Ltd.Inventors: Tomonori Ueno, Hide Ueno, Hiroshi Takashima, Mitsuharu Fujimoto
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Publication number: 20080081213Abstract: An amorphous alloy member including an irregular region having a center line average roughness Ra of about 0.1 ?m to about 1000 ?m on a surface, at least the irregular region including an amorphous alloy having an amorphous phase at a volume ratio of about 50% to about 100%. A process for manufacturing the amorphous alloy member, and an authenticity determination device and an authenticity determination method using the amorphous alloy member.Type: ApplicationFiled: April 26, 2007Publication date: April 3, 2008Applicants: FUJI XEROX CO., LTD., YKK CORPORATIONInventors: Kensuke Ito, Takashi Nagayasu, Tomonari Sugata, Tadashi Shimizu, Tetsuya Kimura
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Publication number: 20080078267Abstract: A process of making metal nanoparticles comprising the steps of: providing a precursor composition comprising at least one metallic compound and at least one organic compound; wherein the organic compound is selected from the group consisting of an ethynyl compound, a metal-ethynyl complex, and combinations thereof; wherein the precursor composition is a liquid or solid at room temperature; and heating the precursor composition under conditions effective to produce metal nanoparticles. A metal nanoparticle composition comprising metal nanoparticles dispersed homogenously in a matrix selected from the group consisting of ethynyl polymer, crosslinked ethynyl polymer, amorphous carbon, carbon nanotubes, carbon nanoparticles, graphite, and combinations thereof.Type: ApplicationFiled: June 24, 2004Publication date: April 3, 2008Inventors: Teddy M. Keller, Syed B. Qadri
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Patent number: 7347885Abstract: A process of making metal nanoparticles comprising the steps of: providing a precursor composition comprising at least one metallic compound and at least one organic compound; wherein the organic compound is selected from the group consisting of an ethynyl compound, a metal-ethynyl complex, and combinations thereof; wherein the precursor composition is a liquid or solid at room temperature; and heating the precursor composition under conditions effective to produce metal nanoparticles. A metal nanoparticle composition comprising metal nanoparticles dispersed homogenously in a matrix selected from the group consisting of ethynyl polymer, crosslinked ethynyl polymer, amorphous carbon, carbon nanotubes, carbon nanoparticles, graphite, and combinations thereof.Type: GrantFiled: June 24, 2004Date of Patent: March 25, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Syed B. Qadri
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Publication number: 20080070058Abstract: An alloy is provided based on a palladium-cobalt binary system, has a coefficient of thermal expansion (CTE) of about 14.0 to about 15.5 and may include one or more of the following additive metals: aluminum, boron, chromium, gallium, lithium, rhenium, ruthenium, silicon, tantalum, titanium, and tungsten.Type: ApplicationFiled: August 28, 2007Publication date: March 20, 2008Applicant: Ivoclar Vivadent, Inc.Inventors: Tridib Dasgupta, Clyde Ingersoll, George Tysowsky
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Patent number: 7261856Abstract: This invention takes advantage of the characteristics that the effective charge numbers of different metals have different values and even with different signs, and alloys are prepared with the metals of different signs of effective charge numbers. The effective charge numbers of the alloys are the summation of the mole fraction of each constituent metal times its respective effective charge number. Based on the knowledge of the calculated effective charge number, alloys are prepared with proper selection of constituent metals and proper ratios. When the alloy is under the influence of an electric field, the atoms, with the tendency to move in the same direction of the electron flow, interact with the atoms, with the tendency to move in the opposite. The alloys are thus electromigration effect-free or electromigration effect-insignificant.Type: GrantFiled: September 9, 2003Date of Patent: August 28, 2007Assignee: National Tsing Hua UniversityInventor: Sinn-Wen Chen
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Patent number: 7022303Abstract: Polycrystalline materials of macroscopic size exhibiting Single-Crystal-Like properties are formed from a plurality of Single-Crystal Particles, having Self-Aligning morphologies and optionally ling morphology, bonded together and aligned along at least one, and up to three, crystallographic directions.Type: GrantFiled: May 13, 2002Date of Patent: April 4, 2006Assignee: Rutgers, The State UniversityInventors: Richard E. Riman, Larry E. McCandlish
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Patent number: 6986951Abstract: The present invention relates to a cobalt-based alloy for the coating of organs subject to erosion by liquid comprising chromium 28–32% by weight, tungsten 6–8% by weight, silicon 0.1–2% by weight, carbon 1.2–1.7% by weight, nickel 3–6% by weight, molybdenum 1–3%, cobalt the complement to 100%. The invention also relates to an application method of the alloy on organs subject to erosion by liquid, in particular vapour turbine blades, to reduce the metal erosion rate following impact with liquids.Type: GrantFiled: September 25, 2003Date of Patent: January 17, 2006Assignee: Nuovo Pignone Holdings S.p.A.Inventor: Massimo Giannozzi
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Patent number: 6984458Abstract: The present invention relates to a method for treating organs subject to erosion by liquids, in particular vapour turbine components, which contemplates laser plating with a cobalt-based alloy comprising chromium from 28 to 32% by weight; tungsten from 5 to 7% by weight; silicon from 0.1 to 2% by weight; carbon from 1.2 to 1.7% by weight; nickel from 0.5 to 3% by weight; iron from 0.01 to 1% by weight; manganese from 0.01 to 1% by weight; molybdenum from 0.2 to 1% by weight; possible impurities or other elements from 0 to 0.5% by weight and cobalt the complement to 100%.Type: GrantFiled: October 31, 2003Date of Patent: January 10, 2006Assignee: Nuovo Pignone Holding S.p.A.Inventor: Massimo Giannozzi
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Patent number: 6946097Abstract: A high strength and creep resistant soft magnetic Fe—Co alloy includes, in weight %, Fe and Co such that the difference between the Fe and Co is at least 2%, at least 35% Co, and 2.5%?(V+Mo+Nb), wherein 0.4%?Mo and/or 0.4%?Nb. This alloy can further include B, C, W, Ni, Ti, Cr, Mn and/or Al. A vanadium-free high strength soft magnetic Fe—Co alloy includes, in weight %, Fe and Co such that the difference between the Fe and Co is at least 2%, and at least 15% Co, the alloy further satisfying (0.1%?Nb and 0.1%?W) or 0.25%?Mn. This alloy can further include B, C, Ni, Ti, Cr and/or Al.Type: GrantFiled: December 10, 2002Date of Patent: September 20, 2005Assignee: Philip Morris USA Inc.Inventors: Seetharama C. Deevi, Rangaraj S. Sundar
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Patent number: 6921422Abstract: This invention relates to a ductile binder phase for use with AlMgB14 and other hard materials. The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture toughness for hard materials so they can be used suitably in industrial machining and grinding applications.Type: GrantFiled: September 23, 2003Date of Patent: July 26, 2005Assignee: Iowa State University Research Foundation, Inc.Inventors: Bruce A. Cook, Alan Russell, Joel Harringa
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Publication number: 20040208776Abstract: This invention takes advantage of the characteristics that the effective charge numbers of different metals have different values and even with different signs, and alloys are prepared with the metals of different signs of effective charge numbers. The effective charge numbers of the alloys are the summation of the mole fraction of each constituent metal times its respective effective charge number. Based on the knowledge of the calculated effective charge number, alloys are prepared with proper selection of constituent metals and proper ratios. When the alloy is under the influence of an electric field, the atoms, with the tendency to move in the same direction of the electron flow, interact with the atoms, with the tendency to move in the opposite. The alloys are thus electromigration effect-free or electromigration effect-insignificant.Type: ApplicationFiled: September 9, 2003Publication date: October 21, 2004Applicant: National Tsing Hua UniversityInventor: Sinn-Wen Chen
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Patent number: 6797137Abstract: A cobalt-chromium-boron-platinum sputtering target alloy having multiple phases. The alloy can include Cr, B, Ta, Nb, C, Mo, Ti, V, W, Zr, Zn, Cu, Hf, O, Si or N. The alloy is prepared by mixing Pt powder with a cobalt-chromium-boron master alloy, ball milling the powders and HIP'ing to densify the powder into the alloy.Type: GrantFiled: April 11, 2001Date of Patent: September 28, 2004Assignee: Heraeus, Inc.Inventors: Michael Sandlin, Bernd Kunkel, Willy Zhang, Phillip Corno
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Patent number: 6740290Abstract: High purity cobalt with a very few content of impurities such as copper, a method of manufacturing thereof, and high purity cobalt targets are provided. The cobalt containing impurities such as copper is dissolved in a hydrochloric acid solution, and the concentration of the hydrochloric acid of the aqueous solution of cobalt chloride is adjusted to 0.1 kmol/m3 to 3 kmol/m3. Then, cobalt is added in the aqueous solution of cobalt chloride, and an inert gas is injected into the solution with agitating, in order to convert the divalent copper ions contained in the aqueous solution of cobalt chloride to monovalent copper ions. Then, the aqueous solution of cobalt chloride is fed into a column filled up with the anion exchange resins. Cobalt is not absorbed on the anion exchange resins although the monovalent copper ions are absorbed on the anion exchange resins. Therefore, copper can be separated from the aqueous solution of cobalt chloride.Type: GrantFiled: September 28, 2001Date of Patent: May 25, 2004Assignees: Sony CorporationInventors: Masahito Uchikoshi, Norio Yokoyama, Tamas Kekesi, Minoru Isshiki
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Patent number: 6733603Abstract: Co-based cutting tool insert alloys having a wrought microstructure and 3-15% Mo, 25-35% Cr, 0.5-2.5% C. The presence of W is avoided, and held below 1%. The alloys have enhanced resistance to abrasive and corrosive attack, and are especially suited for manufacturing router bits, router cutters, shaper cutters, molder cutters, etc. for cutting wood in secondary cutting operations such as furniture making or other cutting inserts such as inserts for cutting optical fibers.Type: GrantFiled: November 15, 2000Date of Patent: May 11, 2004Assignee: Deloro Stellite Company, Inc.Inventors: James B. C. Wu, Bradley McKee, Ian Purvis
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Patent number: 6720088Abstract: A group of alloys suitable for use in a high-temperature, oxidative environment, a protective coating system comprising a diffusion barrier that comprises an alloy selected from the group, an article comprising the diffusion barrier layer, and a method for protecting an article from a high-temperature oxidative environment comprising disposing the diffusion barrier layer onto a substrate are presented.Type: GrantFiled: February 5, 2002Date of Patent: April 13, 2004Assignee: General Electric CompanyInventors: Ji-Cheng Zhao, Melvin Robert Jackson, Richard John Grylls, Ramgopal Darolia
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Patent number: 6648990Abstract: Disclosed is a Co-base magnetic alloy excellent in high-frequency magnetic properties, of which chemical composition is represented by the following general formula, by atomic %, (Co1-aFea)100-y-cM′yX′c, where M′ is at least one element selected from the group consisting of V, Ti, Zr, Nb, Mo, Hf, Sc, Ta and W; X′ is at least one element selected from the group consisting of Si and B; and a, y and c are defined by the formulas of a<0.35, 1.5≦y≦15, and 4≦c≦30, respectively. At least a part of the alloy structure of the alloy consists of crystal grains having an average grain size of not more than 50 nm. The alloy has a relative initial permeability of not more than 2000.Type: GrantFiled: February 28, 2002Date of Patent: November 18, 2003Assignee: Hitachi Metals, Ltd.Inventor: Yoshihito Yoshizawa
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Publication number: 20030147769Abstract: To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen.Type: ApplicationFiled: October 15, 2002Publication date: August 7, 2003Applicant: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Yoshiteru Chiba, Shin Kumagai, Yasuhiro Ogawa, Akira Sakamoto, Hiroyuki Shinohara
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Patent number: 6592811Abstract: A magnetic material includes a main component expressed by a general formula CoNiFeX, wherein X is at least one element selected from the group consisting of Cr, TI, V, Ru, Rh, Os, Ir and Pt, and wherein weight percentages a, b, c and d of Co, Ni, Fe and X contents, respectively, in the main component are such that 40%≦a≦75%, 5%≦b≦20%, 10%≦c≦30%, and 0%≦d≦10%.Type: GrantFiled: October 5, 2000Date of Patent: July 15, 2003Assignee: NEC CorporationInventors: Mikiko Saito, Nobuyuki Ishiwata, Tsutomu Ishi, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka
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Publication number: 20030129075Abstract: In the joint construction of cobalt-based alloy, a cobalt-based alloy layer 1, in which granular or massive eutectic carbide 2 disperses, is joined to a metal of a base metal 37 via an insert metal layer 36. For the joint construction of cobalt-based alloy, liquid phase diffusion bonding is performed at a temperature of 1100° C. for a retention time of 1 hour with an insert metal with a thickness of about 40 &mgr;m being interposed between the base metal, which is S45C carbon steel, and a cobalt-based alloy material which has granular or massive eutectic carbide with a grain size not larger than 30 &mgr;m in a matrix of cast structure and contains 1.03 wt % C, 29.73 wt % Cr, 3.86 wt % W, 2.59 wt % Ni, 2.67 wt % Fe, 0.59 wt % Si, and 0.07 wt % Mo, the balance substantially being Co. The cobalt-based alloy layer 1 after bonding contains granular or massive eutectic carbide.Type: ApplicationFiled: October 16, 2002Publication date: July 10, 2003Applicant: Hitachi, Ltd.Inventors: Yoshihisa Kiyotoki, Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Takahiko Kato, Yoshiteru Chiba
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Patent number: 6585866Abstract: A high purity cobalt sputter target is disclosed which contains a face centered cubic (fcc) phase and a hexagonal close packed (hcp) phase, wherein the value of the ratio of X-ray diffraction peak intensity, Ifcc(200)/Ihcp(10 1), is smaller than the value of the same ratio in a high purity cobalt material obtained by cooling fcc cobalt to room temperature from the high temperature at which it is molten. High purity cobalt is defined as having an oxygen content of not more than 500 ppm, a Ni content of not more than 200 ppm, contents of Fe, Al and Cr of not more than 50 ppm each, and Na and K of less than 0.5 ppm. The disclosed sputter target is manufactured by subjecting the material to cold-working treatments (less than 4221C). Annealing the material, at a temperature in the range 300-4221C for several hours, between cold working treatments significantly increases the amount of cold work which could be imparted into the material.Type: GrantFiled: March 21, 2002Date of Patent: July 1, 2003Assignee: Honeywell International Inc.Inventors: Robert S. Cole, Mathew S. Cooper, Stephen P. Turner, Yinshi Liu, Michael McCarty, Rodney L. Scagline
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Publication number: 20020117025Abstract: High purity cobalt with a very few content of impurities such as copper, a method of manufacturing thereof, and high purity cobalt targets are provided. The cobalt containing impurities such as copper is dissolved in a hydrochloric acid solution, and the concentration of the hydrochloric acid of the aqueous solution of cobalt chloride is adjusted to 0.1 kmol/m3 to 3 kmol/m3. Then, cobalt is added in the aqueous solution of cobalt chloride, and an inert gas is injected into the solution with agitating, in order to convert the divalent copper ions contained in the aqueous solution of cobalt chloride to monovalent copper ions. Then, the aqueous solution of cobalt chloride is fed into a column filled up with the anion exchange resins. Cobalt is not absorbed on the anion exchange resins although the monovalent copper ions are absorbed on the anion exchange resins. Therefore, copper can be separated from the aqueous solution of cobalt chloride.Type: ApplicationFiled: September 28, 2001Publication date: August 29, 2002Inventors: Masahito Uchikoshi, Norio Yokoyama, Tamas Kekesi, Minoru Isshiki
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Patent number: 6398880Abstract: Cobalt-based Ta-containing magnetic target alloy materials are produced in which homogeneity of the magnetic material is improved by eliminating Ta-rich second phases in the microstructure by a process comprising soaking ingots of said alloy from which targets are to be produced at temperatures ranging from 1600° to 2600° F. for periods of 10 minutes to 24 hours prior to hot-rolling, preferably using multiple steps, then hot-rolling at similar temperatures utilizing at least a 3% reduction for pass, and optionally soaking the rolled plates from said rolling step at temperatures ranging from 2000° to 2600° F. for periods of 10 minutes to 24 hours.Type: GrantFiled: August 8, 1997Date of Patent: June 4, 2002Assignee: Heraeus, Inc.Inventors: Michael Bartholomeusz, Carlos Chappa
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Patent number: 6391172Abstract: A high purity cobalt sputter target is disclosed which contains a face centered cubic (fcc) phase and a hexagonal close packed (hcp) phase, wherein the value of the ratio of X-ray diffraction peak intensity, Ifcc(200)/Ihcp(10 {overscore (1)}1), is smaller than the value of the same ratio in a high purity cobalt material obtained by cooling fcc cobalt to room temperature from the high temperature at which it is molten. High purity cobalt is defined as having an oxygen content of not more than 500 ppm, a Ni content of not more than 200 ppm, contents of Fe, Al and Cr of not more than 50 ppm each, and Na and K of less than 0.5 ppm. The disclosed sputter target is manufactured by subjecting the material to cold-working treatments (less than 422° C.). Annealing the material, at a temperature in the range 300-422° C. for several hours, between cold working treatments significantly increases the amount of cold work which could be imparted into the material.Type: GrantFiled: August 25, 1998Date of Patent: May 21, 2002Assignee: The Alta Group, Inc.Inventors: Robert S. Cole, Mathew S. Cooper, Stephen P. Turner, Yinshi Liu, Michael McCarty, Rodney L. Scagline
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Patent number: 6375869Abstract: Manganese-free rare earth-transition metal AB5-type hydrogen-absorbing alloys having favorable high rate discharge characteristics, suitable for use in rechargeable batteries for electrical vehicles or hybrid electrical vehicles, include compositions of the general formula: R(CouAlvMwNi1−u−v−w)z, where R is at least one element selected from rare earth elements and yttrium (Y), M is at least one refractory metal selected from Groups IVB, VB, and VIB of the periodic table, the value of u is from 0 to about 0.25, v is from 0 to about 0.10, w is from 0 to about 0.05, and z, the ratio of R(CouAlvMwNi1−u−v−w)/R, is from about 4.70 to about 5.50. The unit cell volume is from about 87 to about 88.5 A3 at 25° C., the plateau pressure is from about 3 to about 10 apsi at 25° C., and the composition is essentially free of manganese.Type: GrantFiled: January 27, 2000Date of Patent: April 23, 2002Assignee: Santoku CorporationInventors: Tsong P. Perng, Bao-Min Ma, James Landi, Qun Chen
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Patent number: 6365285Abstract: An improved cobalt-base braze alloy composition is provided for use in repairing superalloy articles, such as gas turbine engines, power generation turbines, refinery equipment, and heat exchangers. The improved cobalt-base braze alloy composition includes nickel; at least one element selected from the group of rhenium, palladium, platinum, ruthenium, and iridium; at least one element selected from the group of boron and silicon; and the remaining balance consists of cobalt. This composition may also include aluminum and/or one or more rare earth/lanthanide series elements, and the composition may be combined with one or more powdered base metal superalloy compositions to form an improved diffusion braze alloy mixture. The compositions according to the present invention enable a repair composite formed of such compositions to at least equal the mechanical, environmental, and processing properties of the superalloy base metal being repaired.Type: GrantFiled: May 7, 1999Date of Patent: April 2, 2002Assignee: Rolls-Royce CorporationInventor: Richard Patrick Chesnes
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Publication number: 20020023698Abstract: Cobalt-based Ta-containing magnetic target alloy materials are produced in which homogeneity of the magnetic material is improved by eliminating Ta-rich second phases in the microstructure by a process comprising soaking ingots of said alloy from which targets are to be produced at temperatures ranging from 1600° to 2600° F for periods of 10 minutes to 24 hours prior to hot-rolling, preferably using multiple steps, then hot-rolling at similar temperatures utilizing at least a 3% reduction for pass, and optionally soaking the rolled plates from said rolling step at temperatures ranging from 2000° to 2600°F. for periods of 10 minutes to 24 hours.Type: ApplicationFiled: August 8, 1997Publication date: February 28, 2002Inventors: MICHAEL BARTHOLOMEUSZ, CARLOS CHAPPA
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Patent number: 6350323Abstract: A high permeability metal glassy alloy for high frequencies contains at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, and W, and B. In the metal glassy alloy, the temperature interval &Dgr;Tx of a super cooled liquid region, which is represented by the equation &Dgr;Tx=Tx−Tg (wherein Tx represents the crystallization temperature, and Tg represents the glass transition temperature) is 20° C. or more, and resistivity is 200 &mgr;&OHgr;·cm or more.Type: GrantFiled: September 2, 1999Date of Patent: February 26, 2002Assignees: Alps Electronic Co., Ltd.Inventors: Akihisa Inoue, Tao Zhang
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Patent number: 6299703Abstract: An article comprising an alloy exhibiting high magnetostriction in relatively low applied magnetic fields is provided, the alloy capable of being formed in a relatively easy manner and having desirable physical properties. The Co—Fe alloy of the invention exhibits a magnetostriction of at least 100×10−6 in a magnetic field less than 400 Oe, advantageously in a magnetic field less than 100 Oe. The alloy is formed by plastically deforming the alloy, e.g., by cold rolling, to a reduction in cross-sectional area of at least 50%, and then heat treating the alloy to induce recrystallization. This combination of plastic deformation and recrystallization was found to provide desirable grain growth and microstructure. The resultant alloy is useful in a variety of device components, including transducers, frequency filters, signal delay lines, and optical fiber grating devices.Type: GrantFiled: February 9, 2000Date of Patent: October 9, 2001Assignee: Agere Systems Guardian Corp.Inventors: Li-Han Chen, Sungho Jin, Timothy J. Klemmer, Hareesh Mavoori