Oxide Containing Patents (Class 75/232)
  • Patent number: 8007922
    Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: August 30, 2011
    Assignee: TDY Industries, Inc
    Inventors: Prakash K. Mirchandani, Alfred J. Mosco, Eric W. Olsen, Steven G. Caldwell
  • Patent number: 7998230
    Abstract: A multi-metal powder, in particular for producing diamond tools comprises iron copper, cobalt and molybdenum whose contents are expressed in the following mass percentages: Fe+Cu+Co+Mo=98 mass %, the rest being oxygen and production impurities, wherein 15%=Cu=35%, 0.03=Mo/(Co+Fe+Mo)=0.10, —Fe/Co=2. A sintered compact is obtained by hot compaction of said multi-metal powder, for example, in the form of a diamond cutting tool.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: August 16, 2011
    Assignee: Eurotungstene Poudres
    Inventors: Maxime Bonneau, Jean-François Lartigue, Thierry Commeau, Christian Huet
  • Patent number: 7972583
    Abstract: An iron silicide sputtering target in which the oxygen as a gas component in the target is 1000 ppm or less and a method of manufacturing such an iron silicide sputtering target are provided. The method includes the steps of melting/casting high purity iron and silicon under high vacuum to prepare an alloy ingot, subjecting the ingot to gas atomization with inert gas to prepare fine powder, and thereafter sintering the fine powder. The amount of impurities in the target will be reduced, the thickness of a ?FeSi2 film during deposition can be made thick, the generation of particles will be reduced, a uniform and homogenous film composition can be yielded, and the sputtering characteristics will be favorable. The foregoing manufacturing method is able to stably produce the target.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: July 5, 2011
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Kunihiro Oda, Ryo Suzuki
  • Publication number: 20110159216
    Abstract: A colored metal composite including a metal matrix; and colored particles distributed throughout the metal matrix AND/OR a method including providing metal powder as a first phase of a composite; providing colored particles to form a second phase of the composite; mixing the metal powder and colored particles; and sintering the metal powder around the colored particles to form a metal matrix that has colored particles distributed throughout.
    Type: Application
    Filed: December 29, 2009
    Publication date: June 30, 2011
    Inventors: Caroline Elizabeth MILLAR, Stuart Paul GODFREY
  • Publication number: 20110142708
    Abstract: A formed article comprising a nanostructured ferritic alloy is provided. Advantageously, the article is not formed via extrusion, and thus, cost savings are provided. Methods are also provided for forming the article, and the articles so produced, exhibit sufficient continuous cycle fatigue crack growth resistance and hold time fatigue crack growth resistance to be utilized as turbomachinery components, and in particular, large, hot section components of a gas or steam turbine engines. In other embodiments, a turbomachinery component comprising an NFA is provided, and in some such embodiments, the turbomachinery component may be extruded.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Richard Didomizio, Matthew Joseph Alinger, Raymond Joseph Stonitsch, Samuel Vinod Thamboo
  • Publication number: 20110132143
    Abstract: A powder metal compact is disclosed. The powder metal compact includes a substantially-continuous, cellular nanomatrix comprising a nanomatrix material. The compact also includes a plurality of dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the nanomatrix and a solid-state bond layer extending throughout the nanomatrix between the dispersed particles. The nanomatrix powder metal compacts are uniquely lightweight, high-strength materials that also provide uniquely selectable and controllable corrosion properties, including very rapid corrosion rates, useful for making a wide variety of degradable or disposable articles, including various downhole tools and components.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Inventors: Zhiyue Xu, Gaurav Agrawal
  • Patent number: 7935241
    Abstract: A slurry comprises suspended aluminum particles in a colloid having dispersed colloidal particles of a metal oxide such as a hydroxide. The metal oxide is reducible by metallic aluminum. The slurry has such a basic pH that dissolution of the aluminum particles in the slurry is inhibited so that when the slurry is subjected to a heat treatment, the undissolved aluminum particles are reactable with the colloidal particles to form an aluminum-based mixture resistant to chemical attack made of aluminum oxide, metal aluminum and the metal of the colloidal particles. The slurry can be used to form an aluminum-based protective coating on a component, in particular of an aluminum electrowinning cell or an apparatus for treating molten aluminum.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: May 3, 2011
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Thinh T. Nguyen, Vittorio De Nora
  • Publication number: 20110053041
    Abstract: Copper-based cermets and methods of preparing them are provided. The Cu-based cermets have interpenetrating networks of copper alloy and stabilized zirconia that are in intimate contact and display high electronic connectivity through the copper alloy phase. In certain embodiments, methods of preparing the cermets involving sintering a mixture of ceramic and copper-based powders in a reducing atmosphere at a temperature above the melting point of the copper or copper alloy are provided. Also provided are electrochemical structures having the Cu-based cermet, e.g., as an anode structure or a barrier layer between an anode and a metal support. Applications of the cermet compositions and structures include use in high-operating-temperature electrochemical devices, including solid oxide fuel cells, hydrogen generators, electrochemical flow reactors, etc.
    Type: Application
    Filed: February 13, 2008
    Publication date: March 3, 2011
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael C. Tucker, Craig P. Jacobson
  • Publication number: 20110020163
    Abstract: The present invention relates to a super-hard enhanced hard-metal comprising particulate hard material and a binder and at least one formation, the formation comprising a core cluster and a plurality of satellite clusters, spaced from, surrounding and smaller than the core cluster, and the core cluster and satellite clusters each comprising a plurality of contiguous super-hard particles.
    Type: Application
    Filed: April 15, 2009
    Publication date: January 27, 2011
    Inventor: Roger William Nigel Nilen
  • Patent number: 7837809
    Abstract: The present invention provides an ODS type material (Oxide dispersion strengthened or particle dispersion) which comprises an alloy metal matrix and a dispersion of strengthening particles distributed therein which provide the same with optimum density and deformability. Said metal matrix is constituted by an alloy of zinc and bismuth, of zinc and aluminium, of tin and bismuth, or of tin and zinc, the strengthening material being of tungsten or ferro tungsten, oxides of both, carbides of both, or derivatives of the same. Said new material can substitute for lead in the production of ecological ammunition, hooks for fishing, inertial counterweights in automobiles, X-rays and ionising radiation screens, golf sticks, water pipes and plumbing fittings, as well as in electrical and magnetic applications. The invention also provides an ecological ammunition manufactured from said composite material, such as, for example, pellets.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: November 23, 2010
    Assignee: Real Federacion Espanola De Caza
    Inventors: Eva Maria Ferruelo Nicolas, Maria Del Pilar Hierro Bengoa, Francisco Javier Perez Trujillo, Manuel Ruiz Bowen, Juan Antonio Trilleros Villaverde, Isabel Lasanta Carrasco
  • Patent number: 7837082
    Abstract: A friction stir tool has an axis of rotation and a welding tip that is made of powdered metal material.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: November 23, 2010
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Denis Christopherson, Jr.
  • Publication number: 20100186999
    Abstract: An object of the present invention is to provide a method for producing a conductive material that allows a low electric resistance to be generated, and that is obtained by using an inexpensive and stable conductive material composition containing no adhesive. The conductive material can be provided by a producing method that includes the step of sintering a first conductive material composition that contains silver particles having an average particle diameter (median diameter) of 0.1 ?m to 15 ?m, and a metal oxide, so as to obtain a conductive material. The conductive material can be provided also by a method that includes the step of sintering a second conductive material composition that contains silver particles having an average particle diameter (median diameter) of 0.1 ?m to 15 ?m in an atmosphere of oxygen or ozone, or ambient atmosphere, at a temperature in a range of 150° C. to 320° C., so as to obtain a conductive material.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 29, 2010
    Inventors: Masafumi Kuramoto, Satoru Ogawa, Katsuaki Suganuma, Keun-Soo Kim
  • Patent number: 7740796
    Abstract: Provided is iron silicide powder in which the content of oxygen as the gas component is 1500 ppm or less, and a method of manufacturing such iron silicide powder including the steps of reducing iron oxide with hydrogen to prepare iron powder, heating the iron powder and Si powder in a non-oxidizing atmosphere to prepare synthetic powder containing FeSi as its primary component, and adding and mixing Si powder once again thereto and heating this in a non-oxidizing atmosphere to prepare iron silicide powder containing FeSi2 as its primary component. The content of oxygen as the gas component contained in the iron silicide powder will decrease, and the iron silicide powder can be easily pulverized as a result thereof. Thus, the mixture of impurities when the pulverization is unsatisfactory will be reduced, the specific surface area of the iron silicide powder will increase, and the density can be enhanced upon sintering the iron silicide powder.
    Type: Grant
    Filed: September 1, 2003
    Date of Patent: June 22, 2010
    Assignee: Nippon Mining & Metals Co., Ltd
    Inventors: Kunihiro Oda, Ryo Suzuki
  • Publication number: 20100140568
    Abstract: A thermoelectric conversion material, a method for producing the same, and a thermoelectric conversion device are provided. The thermoelectric conversion material includes an oxide represented by formula (1): M1Oy (1), where M1 is at least one selected from the group consisting of V, Nb and Ta, and 1.90?y?2.10 or an oxide represented by formula (2): M11?xM2xOy (2), where M1 and y are as in formula (1), M2 is selected from the group consisting of Ti, Cr, Mn, Fe, Co, Zr, Hf, Mo and W, and 0?x?0.5.
    Type: Application
    Filed: April 10, 2009
    Publication date: June 10, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuro Tohma, Kazuo Sadaoka, Yoshio Uchida
  • Publication number: 20100124514
    Abstract: A method of uniformly dispersing a nano powder throughout a micron powder. Ordinary mixing or agitation does not succeed in attaining uniform dispersal: the nano powder agglomerates into microscopic masses. In one form of the invention, a charge of a micron powder, with fifty weight percent of charge of nanopowder is loaded into a ball mill. The mixture is ball milled for less than two hours, at room temperature in a dry condition, and produces a highly uniform distribution of the nano powder throughout the micron powder.
    Type: Application
    Filed: September 14, 2006
    Publication date: May 20, 2010
    Applicants: THE TIMKEN COMPANY, IAP RESEARCH, INC.
    Inventors: Bhanumathi Chelluri, Edward Arlen Knoth, Edward John Schumaker, Ryan D. Evans, James. L. Maloney, III
  • Patent number: 7686894
    Abstract: A magnetically soft powder composite material is described, which is composed of at least 99.4 wt. % of a pure iron powder, a phosphatized iron powder, or an iron alloy powder and 0.05 wt. % to 0.6 wt. % of a soft ferrite powder and which is primarily suited for use in rapidly switching solenoid valves in motor vehicle engines. Furthermore, a method for manufacturing such a magnetically soft powder composite material includes the following method steps: a) preparation of a starting mixture including a pure iron powder, a phosphatized iron powder, or an iron alloy powder and a soft ferrite powder, b) mixing of the starting mixture, c) compacting of the starting mixture in a press under increased pressure, d) debinding of the compacted starting mixture in an inert gas atmosphere or in an oxygen-containing gas atmosphere, and e) heat treatment of the compacted starting mixture in an oxidizing gas atmosphere at a temperature of 410° C. to 500° C.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 30, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Adnan Okumus, Waldemar Draxler
  • Publication number: 20100054981
    Abstract: Provided herein are systems, methods, and compositions for magnetic nanoparticles and bulk nanocomposite magnets.
    Type: Application
    Filed: December 22, 2008
    Publication date: March 4, 2010
    Applicant: Board of Regents, The University of Texas System
    Inventor: J. Ping Liu
  • Patent number: 7662207
    Abstract: The invention provides a super hard and tough, nano-crystal austenite steel bulk material having an improved corrosion resistance, and its preparation process. The austenite steel bulk material comprises an aggregate of austenite nano-crystal grains containing 0.1 to 2.0% (by mass) of a solid solution type nitrogen, wherein an oxide, nitride, carbide or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and/or in said nano-crystal grains. For preparation, fine powders of austenite steel-forming components, i.e., iron and chromium, nickel, manganese, carbon or the like are mixed with a substance that becomes a nitrogen source. Mechanical alloying (MA) is applied to the mixture, thereby preparing nano-crystal austenite steel powders having a high nitrogen concentration. Finally, the austenite steel powders are consolidated by sintering by means of spark plasma sintering, rolling or the like.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 16, 2010
    Assignee: Nano Technology Institiute, Inc.
    Inventors: Harumatsu Miura, Nobuaki Miyao, Hidenori Ogawa, Kazuo Oda, Munehide Katsumura, Masaru Mizutani
  • Patent number: 7658781
    Abstract: Composite bodies made by a silicon metal infiltration process that feature a metal phase in addition to any residual silicon phase. Not only does this give the composite material engineer greater flexibility in designing or tailoring the physical properties of the resulting composite material, but the infiltrant also can be engineered compositionally to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. These and other consequences of engineering the metal component of composite bodies made by silicon infiltration permit the fabrication of large structures of complex shape. Certain liquid-based preforming techniques are particularly well suited to the task, particularly where a high volumetric loading of the reinforcement component is desired.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: February 9, 2010
    Inventors: W. Michael Waggoner, Barry R Rossing, Marlene Rossing, legal representative, Michael A Richmond, Michael K Aghajanian, Allyn L McCormick
  • Patent number: 7655214
    Abstract: Valve metal suboxides having a primary suboxide phase and optionally a secondary suboxide phase, a valve metal phase, and/or at least one tertiary suboxide phase can be present in varying amounts. Also disclosed is anodes and capacitors containing the valve metal suboxides of the present invention. Also, a method to prepare a valve metal suboxide is further described which includes granulating one or more of the starting materials individually or together and/or granulating the final product.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: February 2, 2010
    Assignee: Cabot Corporation
    Inventors: David M. Reed, Sridhar Venigalla, Jeffrey A. Kerchner
  • Publication number: 20090315000
    Abstract: The present invention provides a transparent conductive film having high conductivity and a production method therefor. The present invention further provides a sintered body for forming the transparent conductive film and a production method therefor. The transparent conductive film comprises Ga, Ti, and O. The sintered body comprises Ga, Ti, and O. The method for producing a sintered body comprises the steps of: (a) mixing a titanium-containing powder and a gallium-containing powder; and (b) compacting and sintering the obtained mixture.
    Type: Application
    Filed: August 13, 2007
    Publication date: December 24, 2009
    Inventor: Akira Hasegawa
  • Publication number: 20090293672
    Abstract: A macroscopic composite sintered powder metal article including a first region including cemented hard particles, for example, cemented carbide. The article includes a second region including one of a metal and a metallic alloy selected from the group consisting of a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, and a tungsten alloy. The first region is metallurgically bonded to the second region, and the second region has a thickness of greater than 100 microns. A method of making a macroscopic composite sintered powder metal article is also disclosed, herein. The method includes co-press and sintering a first metal powder including hard particles and a powder binder and a second metal powder including the metal or metal alloy.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 3, 2009
    Applicant: TDY Industries, Inc.
    Inventors: Prakash K. Mirchandani, Morris E. Chandler, Eric W. Olsen
  • Patent number: 7615094
    Abstract: A first tungsten-based sintered material of the present invention comprises Ni in a range from 0.2 to 1.5% by mass, Y2O3 in a range from 0.1 to 1% by mass, and optionally, (a) VC in a range from 0.05 to 0.5% by mass and/or (b) Co and/or Fe in a range from 0.01 to 5% by mass, the balance being tungsten (W); W phases are sinter-bonded; Ni phase or Ni—Co/Fe alloy phase which has the largest particle diameter of 5 ?m or less and Y2O3 having the largest particle diameter of 5 ?m or less are distributed at boundaries of the W phases; and the largest particle diameter of the W phase is 30 ?m or less. The first tungsten-based sintered material is preferably used for a hot press mold for optical glass lenses.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: November 10, 2009
    Assignee: Mitsubishi Materials C.M.I. Corporation
    Inventors: Ji-bin Yang, Masato Otsuki
  • Patent number: 7585457
    Abstract: A method of separating components from a metal based composite, the method including the steps of increasing the size of a component to be separated and separating the increased sized component from the other components of the composite.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: September 8, 2009
    Assignee: Titanox Development Limited
    Inventors: Deliang Zhang, Gorgees Adam, Jing Liang
  • Patent number: 7531021
    Abstract: An article includes a microscale composite material having a matrix with more titanium than any other element, and a dispersion of titanium boride particles in the matrix. At least about 50 volume percent of the titanium boride particles have a maximum dimension of less than about 2 micrometers.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 12, 2009
    Assignee: General Electric Company
    Inventors: Andrew Philip Woodfield, Eric Allen Ott, Clifford Earl Shamblen
  • Patent number: 7488395
    Abstract: A functionally graded rare earth permanent magnet having a reduced eddy current loss in the form of a sintered magnet body having a composition RaEbTcAdFeOfMg is obtained by causing E and fluorine atoms to be absorbed in a R—Fe—B sintered magnet body from its surface. F is distributed such that its concentration increases on the average from the center toward the surface of the magnet body, the concentration of E/(R+E) contained in grain boundaries surrounding primary phase grains of (R,E)2T14A tetragonal system is on the average higher than the concentration of E/(R+E) contained in the primary phase grains, the oxyfluoride of (R,E) is present at grain boundaries in a grain boundary region that extends from the magnet body surface to a depth of at least 20 ?m, particles of the oxyfluoride having an equivalent circle diameter of at least 1 ?m are distributed in the grain boundary region at a population of at least 2,000 particles/mm2, the oxyfluoride is present in an area fraction of at least 1%.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: February 10, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hajime Nakamura, Koichi Hirota, Masanobu Shimao, Takehisa Minowa
  • Patent number: 7488394
    Abstract: A rare earth permanent magnet is in the form of a sintered magnet body having a composition R1aR2bTcAdFeOfMg wherein F and R2 are distributed such that their concentration increases on the average from the center toward the surface of the magnet body, and grain boundaries having a concentration of R2/(R1+R2) which is on the average higher than the concentration of R2/(R1+R2) contained in primary phase grains of (R1,R2)2T14A tetragonal system form a three-dimensional network structure which is continuous from the magnet body surface to a depth of at least 10 ?m. The invention provides R—Fe—B sintered magnets which exhibit a high coercive force.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: February 10, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hajime Nakamura, Koichi Hirota, Masanobu Shimao, Takehisa Minowa
  • Patent number: 7488393
    Abstract: A rare earth permanent magnet is in the form of a sintered magnet body having a composition R1aR2bTcAdFeOfMg wherein F and R2 are distributed such that their concentration increases on the average from the center toward the surface of the magnet body, the concentration of R2/(R1+R2) contained in grain boundaries surrounding primary phase grains of (R1,R2)2T14A tetragonal system within the sintered magnet body is on the average higher than the concentration of R2/(R1+R2) contained in the primary phase grains, and the oxyfluoride of (R1,R2) is present at grain boundaries in a grain boundary region that extends from the magnet body surface to a depth of at least 20 ?m. The invention provides R—Fe—B sintered magnets which exhibit high magnet performance despite minimal amounts of Tb and Dy used.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: February 10, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hajime Nakamura, Koichi Hirota, Masanobu Shimao, Takehisa Minowa
  • Publication number: 20080317620
    Abstract: A rare earth element magnet comprising molded magnetic powder containing at least one rare earth element, wherein a Fe rich phase covering a part or entire of the surface of particles of the magnetic powder and having a Fe atomic percentage larger than that of the magnetic powder, and an inorganic binder bonding the particles covered with the Fe rich phase.
    Type: Application
    Filed: May 6, 2008
    Publication date: December 25, 2008
    Inventors: Hiroyuki Suzuki, Takao Imagawa, Yuichi Satsu, Matahiro Komuro, Takashi Yasuhara, Yutaka Matsunobu
  • Patent number: 7435360
    Abstract: A manufacturing method of conductive paste comprising arranging process (S20 to S23) of ceramics particles, arranging process (S10 to S14) of wetted metal particles, forming process (S30) of slurry wherein metal particles and ceramics particles are mixed and dispersion treatment process (S32) by applying collision to the slurry. The arranging process of wetted metal particles comprises, a process (S12) of adding solvent, compatible with organic component in conductive paste and incompatible with water, to undried water washed metal particles, a process (S18) of adding surfactant, a process (S14) of separating water from the metal particles and a process (S15) of adding acetone or the other second solvent.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: October 14, 2008
    Assignee: TDK Corporation
    Inventors: Kazuhiko Oda, Tetsuji Maruno, Akira Sasaki, Kouji Tanaka
  • Publication number: 20080148903
    Abstract: A solidified product (B) is produced by charging a dust (11) generated in a steel making process and containing iron and an oxide thereof as a principal component into a mold (7) and by subjecting it to a pressure molding. A raw material charged to the mold is a mixed granulated product (11p) prepared by mixing the dust and a powder containing carbon as a principal component and by granulating the resultant mixture.
    Type: Application
    Filed: February 17, 2006
    Publication date: June 26, 2008
    Applicants: NTN Corporation, Daiwa Steel Corporation
    Inventors: Katsutoshi Muramatsu, Norio Misaki
  • Patent number: 7384444
    Abstract: A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: June 10, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj Srinivas Thirumalai, Hyun-Woo Jin, Jayoung Koo, John Roger Peterson, Robert Lee Antram, Christopher John Fowler
  • Patent number: 7371271
    Abstract: An object of the present invention is to provide a composite soft magnetic sintered material that has high density, high mechanical strength and high relative magnetic permeability at high frequencies and, in order to achieve this object, the present invention provides a method of producing the composite soft magnetic sintered material, which comprises mixing a composite soft magnetic powder, that consists of iron powder, Fe—Si based soft magnetic iron alloy powder, Fe—Al based soft magnetic iron alloy powder, Fe—Si—Al based soft magnetic iron alloy powder, Fe—Cr based soft magnetic iron alloy powder or nickel-based soft magnetic alloy powder (hereinafter these powders are referred to as soft magnetic metal powder) of which particles arc coated with a ferrite layer which has a spinel structure, with 0.05 to 1.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: May 13, 2008
    Assignee: Mitsubishi Materials PMG Corporation
    Inventors: Kazunori Igarashi, Ryoji Nakayama, Koichiro Morimoto, Muneaki Watanabe
  • Patent number: 7364632
    Abstract: The present invention is a process for producing a radiator member for electronic appliances, and is characterized in that, in a process for producing a radiator member for electronic appliances, the radiator member comprising a composite material in which SiC particles are dispersed in a matrix metal whose major component is Al, it comprises a filling step of filling an SiC powder into a mold, a pre-heating step of pre-heating the mold after the filling step to a pre-heating temperature which falls in a range of from a melting point or more of said matrix metal to less than a reaction initiation temperature at which a molten metal of the matrix metal and SiC particles in the SiC powder start to react, and a pouring step of pouring the molten matrix metal whose molten-metal temperature falls in a range of from the melting point or more of the matrix metal to less than the reaction initiation temperature, into the mold after the pre-heating step, and impregnating the SiC powder with the molten metal by pressur
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: April 29, 2008
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Katsufumi Tanaka, Tomohei Sugiyama, Kyoichi Kinoshita, Eiji Kono, Naohisa Nishino
  • Patent number: 7316724
    Abstract: A cermet composition represented by the formula (PQ)(RS)X comprising: a ceramic phase (PQ), a binder phase (RS) and X wherein X is at least one member selected from the group consisting of an oxide dispersoid E, an intermetallic compound F and a derivative compound G wherein said ceramic phase (PQ) is dispersed in the binder phase (RS) as particles of diameter in the range of about 0.5 to 3000 microns, and said X is dispersed in the binder phase (RS) as particles in the size range of about 1 nm to 400 nm.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: January 8, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Narasimha-Rao Venkata Bangaru, Jayoung Koo, ChangMin Chun, Hyun-Woo Jin, John Roger Peterson, Robert Lee Antram, Christopher John Fowler
  • Patent number: 7189276
    Abstract: A foamed/porous metal having fine bubbles in a matrix of aluminum or magnesium has shells of aluminum oxide or magnesium oxide formed between the matrix and the bubbles of carbon dioxide.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: March 13, 2007
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Nakamura, Ryoichi Ishikawa, Katsuhiro Shibata
  • Patent number: 7186288
    Abstract: A method of production of large Ingots of neutron attenuating composites using a vacuum-bellows system allows for large cross-sectional shapes to be extruded and rolled. This method uses a vacuum-bellows technology which allows the manufacturing of large 8–16 inch diameter ingots (50–450 lbs. each). A variety of primary metal matrix materials can be used in this technology. High specific strength and stiffness can be achieved because the technology allows for final densities of 99% and higher. The vacuum-bellows technology allows metals and ceramics to blend and mesh together at compression pressures of 800 tons with elevated temperatures. The controlled compression movement allows for any oxide layer, on the metal, to be broken up and consolidated with the chosen ceramic particulate.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: March 6, 2007
    Inventor: Robin A. Carden
  • Patent number: 7147686
    Abstract: A rare earth magnet comprises rare earth magnet particles and a rare earth oxide being present between the rare earth magnet particles. The rare earth oxide is represented by a following general formula (I): R2O3??(I) where R is any one of terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: December 12, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tetsurou Tayu, Hideaki Ono, Munekatsu Shimada, Makoto Kano
  • Patent number: 7048808
    Abstract: The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8?x?18 at %, 0.1?y?3.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: May 23, 2006
    Assignee: Neomax Co., Ltd.
    Inventors: Yuji Kaneko, Katsuya Taniguchi, Takao Sekino
  • Patent number: 7014881
    Abstract: An inert anode 50, for use in an electrolytic cell 12 for producing metals such as aluminum, is made by providing chemical source materials 100 such as at least two of metal salts, metal particles, or metal oxides and dissolving them to form a solution or a slurry 110, followed by adding a base 120 and adjusting the pH so that a gel 130 is formed which is dried and calcined 150, 160, 190 to provide a blend of metal oxide powder 200 which can be pressed and sintered 220 to form an inert anode 50.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: March 21, 2006
    Assignee: Alcoa Inc.
    Inventors: Xinghua Liu, Siba P. Ray, Alfred F. LaCamera, Douglas A. Weirauch, Mark L. Weaver, Robert A. DiMilia, Kirk J. Malmquist, Frankie E. Phelps, Joseph M. Dynys
  • Patent number: 7011691
    Abstract: An oxide sintered body is composed mainly of indium and containing tungsten, has a resistivity of no more than 1 k?cm. The tungsten content in terms of the W/In atomic ratio is preferably at least 0.001 and no more than 0.17. The oxide sintered body comprise mainly a bixbyite structure indium oxide crystal phase containing tungsten in a solid solution and/or an indium tungstate compound crystal phase, with no tungsten oxide crystal phase present, whereby an oxide sintered body for use as a sputtering target is provided for an oxide based transparent conductive film with low resistance and excellent transmission characteristics for the infrared light region.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: March 14, 2006
    Assignee: Sumitomo Metal Mining Co. Ltd.
    Inventor: Yoshiyuki Abe
  • Patent number: 6984271
    Abstract: A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare earth oxide being represented by the following general formula (I): R2xR?2(1?x)O3??(I) where each of R and R? is one element selected from the group consisting of yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu), and 0<x<1.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: January 10, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tetsurou Tayu, Takae Ono, legal representative, Makoto Kano, Munekatsu Shimada, Yoshio Kawashita, Takeshi Yamauchi, Hideaki Ono, deceased
  • Patent number: 6964693
    Abstract: A method for forming dendritic metal powders, comprising the steps of: (1) heating a powder comprising non-dendritic particles, under conditions suitable for initial stage sintering, to form a lightly sintered material; and (2) breaking the lightly sintered material to form a powder comprising dendritic particles. In one embodiment, the lightly sintered material is broken by brushing the material through a screen. Another aspect of the present invention comprises the dendritic particles that are produced by the method described above. These particles can comprise any suitable metal, such as transition metals, rare earth metals, main group metals or metalloids or an alloy of two or more such metals. The particles can also comprise a ceramic material, such as a metal oxide. These particles are characterized by a dendritic, highly anisotropic, morphology arising from the fusion of substantially non-dendritic particles, and by a low apparent density relative to the substantially non-dendritic starting material.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: November 15, 2005
    Assignee: Mykrolis Corporation
    Inventors: Robert S. Zeller, Christopher J. Vroman
  • Patent number: 6902600
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: June 7, 2005
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goval, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6896846
    Abstract: A method for synthesis of biomedical alloys has been developed based on combustion phenomena. This low pressure combustion synthesis (LPCS) technique may be used for production of Co-based and other metal-based alloys, which cover the entire range of orthopaedic implants, including total hip and knee replacements, as well as hone screws, plates, and wires. A unique aspect of the method is that combustion synthesis under low ambient gas pressure allows one to produce pore-free (>99% theoretical density) alloys with high purity and precise chemical and phase compositions.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 24, 2005
    Assignee: University of Notre Dame
    Inventors: Arvind Varma, Alexander Mukasyan, Bing-Yun Li
  • Patent number: 6890369
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: May 10, 2005
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6866696
    Abstract: A technique for producing iron utilizes agglomerations, such as briquettes or tablets, or powders, that include a sulfur-containing material such as iron sulfide, and and oxygen containing material such as iron oxide. The agglomerations or powders are substantially free of chemical binders and utilize iron and aluminum metal powders and pressure for compaction on either roll presses or tablet machines. Addition of metal powders provides rapid dissolution of the alloy and improved heat transfer. Iron sulfide agglomerations also provide consistent and improved sulfur recoveries compared to granulated iron sulfide additions with little to no sulfur odor.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: March 15, 2005
    Inventor: Rodney L. Naro
  • Patent number: 6846344
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: January 25, 2005
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6821312
    Abstract: A method of making cermet inert anodes for the electrolytic production of metals such as aluminum is disclosed. The method includes the step of spray drying a slurry comprising ceramic phase particles and metal phase particles. The resultant spray dried powder, which comprises agglomerates of both the ceramic phase and metal phase particles, may then be consolidated by techniques such as pressing and sintering to produce a cermet inert anode material. The ceramic phase may comprise oxides of Ni, Fe and at least one additional metal selected from Zn, Co, Al, Li, Cu, Ti, V, Cr, Zr, Nb, Ta, W, Mo, Hf and rare earths. The metal phase may comprise Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The consolidated cermet inert anode material exhibits improved properties such as reduced porosity. The cermet inert anodes may be used in electrolytic reduction cells for the production of commercial purity aluminum as well as other metals.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: November 23, 2004
    Assignee: Alcoa Inc.
    Inventors: Siba P. Ray, Xinghua Liu, Frankie E. Phelps, Joseph M. Dynys, Douglas A. Weirauch, Jr.
  • Patent number: 6797030
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: September 28, 2004
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger