Oxygen(o) Associated With More Than One Metal Patents (Class 75/234)
  • Publication number: 20150004044
    Abstract: An alloy and method of forming the alloy are provided. The alloy includes a matrix phase, and a multimodally distributed population of particulate phases dispersed within the matrix. The matrix includes iron and chromium, and the population includes a first subpopulation of particulate phases and a second subpopulation of particulate phases. The first subpopulation of particulate phases include a complex oxide, having a median size less than about 15 nm, and present in the alloy in a concentration from about 0.1 volume percent to about 5 volume percent. The second subpopulation of particulate phases have a median size in a range from about 25 nm to about 10 microns, and present in the alloy in a concentration from about 0.1 volume percent to about 15 volume percent. Further embodiments include articles, such as turbomachinery components and fasteners, for example, that include the above alloy, and methods for making the alloy.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 1, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Laura Cerully Dial, Matthew Joseph Alinger, Richard DiDomizio
  • Publication number: 20150004043
    Abstract: An alloy and method of forming the alloy are provided. The alloy includes a matrix phase, and a population of particulate phases dispersed within the matrix. The matrix includes iron and chromium; and the population includes a first subpopulation of particulate phases and a second subpopulation of particulate phases. The first subpopulation of particulate phases include a complex oxide, having a median size less than about 20 nm, and present in the alloy in a concentration from about 0.1 volume percent to about 5 volume percent. The second subpopulation of particulate phases have a median size in a range from about 30 nm to about 10 microns, and present in the alloy in a concentration from about 1 volume percent to about 15 volume percent.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Richard DiDomizio, Matthew Joseph Alinger, Laura Cerully Dial
  • Patent number: 8864869
    Abstract: The hearth roll for a continuous annealing furnace is able to suppress the occurrence of buildup on the hearth roll surface and able to be stably used for a long period under the high temperature environment. The hearth roll has a cermet coating comprised 50 to 90 vol % of ceramic and the balance of a heat resistant alloy on its surface, the ceramic containing Cr3C2: over 50 to 90 vol %, Al2O3: 1 to 40 vol %, Y2O3: 0 to 3 vol %, and ZrB2: 0 to 40 vol % and having a balance of unavoidable impurities and pores, the heat resistant alloy containing Cr: 5 to 20 mass %, Al: 5 to 20 mass %, and one or both of Y and Si: 0.1 to 6 mass % and has a balance of one or both of Co and Ni and unavoidable impurities.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: October 21, 2014
    Assignees: Nippon Steel & Sumitomo Metal Corporation, Tocalo Co., Ltd.
    Inventors: Yasushi Kurisu, Tatsuo Suidzu
  • Patent number: 8845776
    Abstract: The present invention relates to sliding material provided by sintering a lead-free copper or copper alloy and contains at least one mineral selected from the group consisting of talc, mica, kaolinite mineral and montmorillonite mineral. Pb has conventionally been included in sliding materials for the purpose of obtaining conformability and seizure resistance. Despite the absence of Pb, the Pb-free copper-based sliding material and sliding parts according to the present invention have improved sliding properties.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: September 30, 2014
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Ryo Mukai, Atsushi Koyama, Nahomi Hamaguchi, Kao Mouri, Hiromi Yokota
  • Patent number: 8790438
    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: Grant
    Filed: December 29, 2009
    Date of Patent: July 29, 2014
    Assignee: Nokia Corporation
    Inventors: Caroline Elizabeth Millar, Stuart Paul Godfrey
  • Publication number: 20140130698
    Abstract: The present invention relates to a composite material for the production of ecological ammunition characterized in that it comprises a) a metal matrix formed by a zinc and bismuth alloy, zinc and aluminum alloy, tin and bismuth alloy or zinc and tin alloy and a metal selected from aluminum, bismuth and the combination thereof and b) reinforcing metal particles distributed therein selected from wolframium, ferro-wolframium, ferro-wolframium carbides, wolframium carbides, wolframium oxides and ferro-wolframium oxides, subjected to oxidation before being added to the metal matrix.
    Type: Application
    Filed: June 8, 2012
    Publication date: May 15, 2014
    Applicant: REAL FEDERACION ESPANOLA DE CAZA
    Inventors: Javier Francisco Perez Trujillo, Pilar Maria Hierro De Bengoa, Isabel Maria Lasanta Carrasco, Marta Tejero Garcia, Aito Rey Bonet, Gabriel Angel Fernandez Diaz-Carralero
  • Patent number: 8603366
    Abstract: In an electric contact material of silver matrix capable of resisting arc erosion and containing no cadmium-composite, an Ag—(SnO2+In2O3) composite containing 9˜11% of (SnO2+In2O3) or an Ag—Cu oxide, composite containing 15˜25% of Cu oxide is used. The electrical contact material has a contact resistance of 5˜60 milliohms (mohm) and an arc erosion resistance capability up to 2*103˜10*103 times provided that the Vickers hardness (Hv) of the material is 100˜150, the measured current is 1˜5 amperes, and the measured voltage is 10˜20 volts. Two electrical contacts maintain an arc erosion resisting capability at the condition of a low contact resistance when the electrical contact material is formed on a surface of a metal substrate of an electric connector.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: December 10, 2013
    Assignee: C.C.P. Contact Probes Co., Ltd.
    Inventors: Chin-Wei Hung, Wen-Yuan Chiang, Wei-Chu Chen, Chih-Jung Wang, Wen-Ying Cheng, Bor-Chen Tsai, Wei-Chao Wang
  • 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
  • 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: 20090211399
    Abstract: A material for the storage and release of gases comprises a plurality of hollow elements, each hollow element comprising a porous wall enclosing an interior cavity, the interior cavity including structures of a solid-state storage material. In particular examples, the storage material is a hydrogen storage material such as a solid state hydride. An improved method for forming such materials includes the solution diffusion of a storage material solution through a porous wall of a hollow element into an interior cavity.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 27, 2009
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation, Savannah River National Laboratory
    Inventors: Rana F. Mohtadi, George G. Wicks, Leung K. Heung, Kenji Nakamura
  • Patent number: 7510591
    Abstract: A process for hydrogenating an organic compound which has at least one carbonyl group, in which the organic compound is brought into contact in the presence of hydrogen with a shaped article which can be produced in a process in which (i) an oxidic material comprising copper oxide, aluminum oxide and at least one of the oxides of lanthanum, tungsten, molybdenum, titanium or zirconium is prepared, (ii) powdered metallic copper, copper flakes, powdered cement, graphite or a mixture thereof is added to the oxidic material, and (iii) the mixture resulting from (ii) is shaped to a shaped article.
    Type: Grant
    Filed: March 20, 2004
    Date of Patent: March 31, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Sylvia Huber-Dirr, Michael Hesse, Andrea Haunert, Henrik Junicke
  • Publication number: 20090025508
    Abstract: The invention discloses nano/micron binary structured powders for superhydrophobic, self-cleaning applications. The powders are featured by micron-scale diameter and nano-scale surface roughness. In one embodiment, the average diameter is about 1-25 ?m, and the average roughness Ra is about 3-100 nm. The nano/micron binary structured powders may be made of silica, metal oxide, or combinations thereof.
    Type: Application
    Filed: October 5, 2007
    Publication date: January 29, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Chieh Liao, Hsiu-Fen Lin, Jin-Ming Chen
  • Patent number: 7326360
    Abstract: Magnetostrictive material based on cobalt ferrite is described. The cobalt ferrite is substituted with transition metals (such manganese (Mn), chromium (Cr), zinc (Zn) and copper (Cu) or mixtures thereof) by substituting the transition metals for iron or cobalt to form substituted cobalt ferrite that provides mechanical properties that make the substituted cobalt ferrite material effective for use as sensors and actuators. The substitution of transition metals lowers the Curie temperature of the material (as compared to cobalt ferrite) while maintaining a suitable magnetostriction for stress sensing applications.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: February 5, 2008
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: David C. Jiles, Jason A. Paulsen, John E. Snyder, Chester C. H. Lo, Andrew P. Ring, Keith A. Bormann
  • 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: 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: 6808807
    Abstract: A coated ferromagnetic particle comprises a ferromagnetic core and a coating. The coating comprises a residue resulting from a thermal treatment of a coating material comprising a polymer selected from the group consisting of polyorganosiloxanes, polyorganosilanes, and mixtures thereof. A composite magnetic article comprises a compacted and annealed article of a desired shape. The composite magnetic article comprises a plurality of coated ferromagnetic articles. Each coated ferromagnetic particle comprises a ferromagnetic core and a coating. The coating comprises a residue resulting from a thermal treatment of a coating material comprising a polymer selected from the group consisting of polyorganosiloxanes, polyorganosilanes, and mixtures thereof.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: October 26, 2004
    Assignee: General Electric Company
    Inventors: Krishnamurthy Anand, Gerald Burt Kliman, Luana Emiliana Iorio, Suchismita Sanyal, Amitabh Verma, Kanchan Kumari, Srinidhi Sampath
  • Publication number: 20040038805
    Abstract: The invention is a method for producing a cast cermet anode for metal oxide electrolytic reduction by feeding metallic iron and metallic nickel in solid form to an oxidizing reactor; melting and oxidizing the iron and nickel and forming molten nickel ferrite; mixing the molten nickel ferrite with a base metal of high electrical conductivity such as nickel, copper, silver, or alloys thereof in a holding vessel such as ladle or tundish, and casting the mixture into a mold to form a near net shape of the desired anode. Apparatus for carrying out the method, and the resulting product are also disclosed.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 26, 2004
    Inventors: David G. Meissner, Ashvin Srivastava, Jettrey B. Musat, Jeffrey K. Cheetham, Abid Bengali
  • Patent number: 6500225
    Abstract: A method for producing an indium-tin-oxide sintered body comprising the steps of; molding a powder comprising indium, tin and oxygen, and sintering the molded article in oxygen gas-containing atmosphere, wherein the halogen content of the powder comprising indium, tin and oxygen is 0.02% by weight or less, the concentration of oxygen in the oxygen gas-containing atmosphere is 90% or more during the sintering, the partial pressure of moisture contained in the oxygen gas-containing atmosphere is 800 Pa or less during the sintering, and the molded article is maintained at a temperature in the range from 1500 to 1650° C. for 1 hour or more for the sintering.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: December 31, 2002
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Akira Hasegawa, Shinji Fujiwara, Kunio Saegusa
  • Patent number: 6352649
    Abstract: The present invention provides magnetostrictive composites that include an oxide ferrite and metallic binders which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: March 5, 2002
    Assignee: Iowa State University Research Foundation Inc.
    Inventors: R. William McCallum, John E. Snyder, Kevin W. Dennis, Carl R. Schwichtenberg, David C. Jiles
  • Patent number: 6302939
    Abstract: A rare earth permanent magnet alloy having a composition expressed as RxF100−(x+y+z+m+n)ByTzMmDn. In this formula, R is one or more of rare earthy elements, such as neodymium, lanthanum, cerium, dysprosium and/or praseodymium; F is Fe or Fe and up to 20 atomic percent of Co by substitution; B is boron; T is one or more elements selected from the group of Ti, Zr, Cr, Mn, Hf, Nb, V, Mo, W and Ta; M is one or more elements selected from the group of Si, Al, Ge, Ga, Cu, Ag, and Au; and D is one or more elements selected from the group of C, N, P, and O. In this formula, x, y, z, m, n are atomic percentages in the ranges of 3<x<15, 4<y<22, 0.5<z<5, 0.1<m<2, and 0.1<n<4. Fine amorphous particles of such alloy are made by atomization and/or splat-quenching. Both substantially-spherical, irregular and substantially plate-like particles are simultaneously produced.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: October 16, 2001
    Assignee: Magnequench International, Inc.
    Inventors: Barry H. Rabin, Charles H. Sellers
  • Patent number: 6254660
    Abstract: The invention relates to a Cr2O3-forming alloy that is resistant to oxidization and/or corrosion at high temperature, especially by glass, characterized in that it contains, in dispersion within its matrix, chromium oxide Cr2O3, or a precursor of this oxide. This alloy can be prepared by powder metallurgy using a process of hot consolidation of metallic powders, in particular by sintering. The alloy is especially suitable for articles which are to be used in a high-temperature oxidizing or corrosive environment.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 3, 2001
    Assignee: Saint-Gobain Recherche
    Inventors: Jean-Luc Bernard, Michel Bousquet, Olivier Kessler, Pierre Steinmetz
  • Patent number: 6150048
    Abstract: Disclosed are a metallic interconnection material for solid oxide fuel cells and a preparation method thereof. The metallic interconnection material has two fine microstructural phases in which 5-25% by volume of LaCrO.sub.3 is dispersed at the grain boundaries of Cr particles. It can be prepared by mixing 75-95% by volume of a Cr powder and 5-25% by volume of an LaCrO.sub.3 powder, together with a solvent and a binder, in a mill, molding the mixture into a predetermined shape after drying, and sintering the molded shape at approximately 1,500.degree. C. for 10 hours in an Ar atmosphere with 5 vol % of hydrogen to give an LaCrO.sub.3 -dispersed Cr alloy. The LaCrO.sub.3 -dispersed Cr alloy shows high electric conductivity by virtue of the growth inhibition of Cr particles during sintering and high chemical stability by virtue of the presence of the rare earth metal, La, meeting meet the requirements for the interconnection materials for solid oxide fuel cells.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: November 21, 2000
    Assignee: Korea Institute of Energy Research
    Inventors: Rak-Hyun Song, Dong-Ryul Shin, Kwangg-Sun Jeon, Yi-Sup Han, Dokiya Masayuki
  • Patent number: 6093337
    Abstract: The present invention provides magnetostrictive compositions that include an oxide ferrite which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: July 25, 2000
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: R. William McCallum, John E. Snyder, Kevin W. Dennis, Carl R. Schwichtenberg, David C. Jiles
  • Patent number: 6090191
    Abstract: The invention relates to the field of producing the means for protecting the alloys on the nickel base against the influence of corrosive media, and more particularly concerns the metal-ceramic coatings used for protecting the flow parts of the turbines of turbopump liquid-propellant rocket engines (LRE). The composition for producing the metal-ceramic coating consists of nickel and of oxides of barium, boron, aluminum, cerium and zirconium at the following percentage of components by mass: nickel--36-58, barium oxide--16-19, boron oxide--7-13, aluminum oxide--6-9, cerium oxide--14-19, zirconium oxide--1-2. The coating is produced of a slip, that is applied to the pieces by dipping, spraying or flooding. The slip layers are dried in the flow of hot air. The coating is fired in a furnace in the inert gas medium, argon for example, at a temperature of 1000-1100.degree. C. during 0.5-1 hour.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: July 18, 2000
    Assignee: Oktrytoe Aktsionernoe Obschestvo "Nauchno-Proizvodstvennoe Obiedinenie "Energomash" Imeni Akademika V.P. Glushko"
    Inventors: Aza Fedorovna Atlanova, Galina Andreevna Babaeva, Evgeny Alexeevich Belov, Dina Ivanovna Dubovik, Jury Alexandrovich Pestov, Margarita Evgenievna Judina, Leonid Vasilievich Cherkasov, Vadim Iliich Semenov, Felix Jurievich Chelkis, Alexandr Mikhailovich Kashkarov, Konstantin Pavlovich Khaplanov
  • Patent number: 6004370
    Abstract: A sintered friction material especially suitable for use in a braking system has a matrix of a copper-system metal such as copper, tin, nickel and aluminum, and contains a specific additive, graphite and potassium titanate as friction conditioners. The specific additive consists of at least one material selected from a group consisting of zirconium oxide, silica, dolomite, orthoclase and magnesium oxide. The specific additive, the graphite and the potassium titanate are preferably blended in volume ratios of 1 to 15%, 10 to 50% and 5 to 30% respectively. The form of the potassium titanate is at least one of whiskery, platy and spherical forms and preferably plate-like or spherical. The sintered friction material has good abrasion resistance, low abrasion of the counterpart, a high friction coefficient, excellent material strength, good chattering resistance, and good squealing resistance.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: December 21, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takatoshi Takemoto, Yukinori Yamashita
  • Patent number: 5989673
    Abstract: Chromium-tantalum oxides (Cr-TaO.sub.x), including chromium-tantalum pentoxide (Cr-Ta.sub.2 O.sub.5), chromium-tantalum tetrioxide (Cr-Ta.sub.2 O.sub.4 or Cr-TaO.sub.2), sputtering targets containing them, and their manufacture are disclosed. The targets are characterized by high density, uniform TaO.sub.x distribution, low impedance and stable plasma during the sputtering. The Cr-Ta oxides are used as a thin film sublayer to improve the coercivity and other characteristics of magnetic recording media deposited on metallic or non-metallic substrates used in hard disks for data storage.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 23, 1999
    Assignees: Sony Corporation, Materials Research Corporation
    Inventors: Wei Xiong, Hung-Lee Hoo
  • Patent number: 5935485
    Abstract: A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: August 10, 1999
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Takao Tani, Hiroaki Makino, Nobuo Kamiya
  • Patent number: 5830257
    Abstract: A manufacturing method for an alumina-dispersed reinforced copper alloy according to the invention is an improved method which is capable of manufacturing efficiently alumina-dispersed reinforced copper having both good electro-conductivity used for wire-manufacturing-material and good mechanical property, the manufacturing method comprises the steps of obtaining powders constituted by particles having aluminum-contained copper alloy-oxide, allowing to mill aluminum-contained copper alloy powder within the air atmosphere by milling device with mechanical-alloying-operation due to shock compression, converting aluminum into aluminum-oxide by heat-treatment of the powders within inert atmosphere, implementing reduction-treatment of the converted member within the reducing atmosphere, and executing hot extrusion the reduction-treated-material.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: November 3, 1998
    Assignee: Yazaki Corporation
    Inventors: Hirohiko Fujimaki, Manabu Kiuchi, Tetsuya Takaai, deceased
  • Patent number: 5824220
    Abstract: The invention relates to an inorganic support obtained by sintering and intended to constitute a support for a filter membrane, the support comprising: an inorganic feedstock having a grain size greater than 20 .mu.m and constituted by a metal compound containing only one metal selected from the following metals: aluminum, silicon, and titanium; and an inorganic binder that reacts with the feedstock under the heat treatment conditions of the support in the range 1200.degree. C. to 1500.degree. C., so as to obtain a support having porosity greater than 25% and mechanical strength defined by ultimate bending stress for plane supports greater than 15 MPa, and by ultimate tensile stress for tubular supports greater than 5 MPa, without including a compound liable to create microcracks in the support.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: October 20, 1998
    Assignee: T.A.M.I. Industries
    Inventors: Andre Grangeon, Philippe Lescoche
  • Patent number: 5822674
    Abstract: A material for electric contacts based on silver-tin oxide is obtained by mixing a powder of silver or an alloy mainly containing silver with a powder consisting mainly of tin oxide and 0.01 to 10 wt. % (in relation to the quantity of tin oxide) of an additive consisting of one or more compounds containing silver, oxygen and a metal from sub-groups II to VI of the periodic system and/or antimony, bismuth, germanium, indium and gallium, compacting the mixture and sintering it. The tin oxide may be replaced by zinc oxide.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: October 13, 1998
    Assignee: Doduco GmbH + Co. Dr. Eugen Durrwachter
    Inventors: Volker Behrens, Thomas Honig
  • Patent number: 5798468
    Abstract: An electrical contact material for switching rated currents between 20 and 100 Ampere having improved operational life made of 3.2 to 19.9 wt-% tin oxide and 0.05 to 0.4 wt-%, in each case, of indium oxide and bismuth oxide, the remainder being silver. In the course of the manufacture of the material by powder metallurgy more than 60 wt-% of the tin oxide should exhibit a particle size of more than 1 .mu.m.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: August 25, 1998
    Assignee: Degussa Aktiengesellschaft
    Inventors: Wolfgang Weise, Roger Wolmer, Peter Braumann
  • Patent number: 5796017
    Abstract: Contact material based on silver, use of such a contact material in a switching device in power engineering, and process for preparing the contact material.For contact pieces in low-voltage switches, in particular, substitute materials based on silver-iron oxide are proposed for the silver-nickel hitherto often used in practice. According to the invention, such a material contains, as a further effective component, an oxide of a metal of the third sub-group, yttrium oxide (Y.sub.2 O.sub.3) being especially designed for this purpose. For example, a material of the composition Ag/Fe.sub.2 O.sub.3 10/Y.sub.2 O.sub.3 1 meets, with its favourable temperature behaviour, the properties required with respect to the contact property spectrum. In addition, at least one metal oxide which contains elements of the sixth sub-group of the Periodic Table of the Elements, preferably iron tungstate (FeWO.sub.4), can be present. In particular, a material of the composition Ag/Fe.sub.2 O.sub.3 9/Y.sub.2 O.sub.3 1/FeWO.sub.4 0.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: August 18, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventor: Franz Hauner
  • Patent number: 5789686
    Abstract: Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably, the cermets further exhibit a portion that is binder rich and which gradually or smoothly transitions to at least a second region. The multiple-region cermets are particularly useful in compressively loaded application wherein a tensile stress or fatigue limit might otherwise be excessive for monolithic articles. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size, differential carbide chemistry, differential binder content, differential binder chemistry, or any combination of the preceding).
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 4, 1998
    Assignee: Kennametal Inc.
    Inventors: Ted R. Massa, John S. Van Kirk, Robert R. McNaughton, Jr.
  • Patent number: 5762768
    Abstract: The targets for cathodic sputtering according to this invention are formed of hot-pressed or hot isostatic-pressed indium oxide/tin oxide powder with a minimum density of 95% of the theoretical density and with a sub-stoichiometric oxygen content are known. In order to provide the improvement of high stability and, simultaneously, high sputtering rate, it is proposed according to the invention that the target have a crystalline phase which is formed as a solid solution of indium oxide and tin oxide with a minimum of 90% by weight, preferably a minimum of 97%, of the solid solution, and which has an average grain size ranging from 2 .mu.m to 20 .mu.m.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: June 9, 1998
    Assignee: W.C. Heraeus GmbH
    Inventors: Karl-Heinz Goy, David Francis Lupton, Jorg Schielke, Friedhold Scholz, Bernard Serole, Hans Bohmeier
  • Patent number: 5728638
    Abstract: The invention is directed to a non-vapor phase process for forming a metal/ceramic composite containing a relatively inert metal such as silver, copper, or nickel by the reaction of a reactive metal or metal alloy containing the inert metal, and a sacrificial ceramic preform. The resulting metal/ceramic composite is essentially the same shape and dimensions as the sacrificial ceramic preform, and exhibits improved physical and mechanical properties, including improved corrosion and wear resistance.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: March 17, 1998
    Assignee: BFD, Inc.
    Inventors: Andrew C. Strange, Michael C. Breslin
  • Patent number: 5610347
    Abstract: The invention relates to a material for electric contacts taking silver tin-oxide as basis, consisting of silver or mainly silver-containing alloy, tin oxide and other oxides or carbides of tungsten, molybdenum, vanadium, bismuth, titanium, and/or copper.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 11, 1997
    Assignee: Doduco GmbH & Co. Dr. Eugen Durrwachter
    Inventors: Volker Behrens, Thomas Honig, Andreas Kraus, Karl E. Saeger, Rainer Schmidberger, Theodor Staneff
  • Patent number: 5599377
    Abstract: A mixed iron powder for powder metallurgy containing less than about 0.1 wt % of Mn, about 0.08 to 0.15 wt % of S, a total of about 0.05 to 0.70 wt % of one or more compounds selected from MoO.sub.3 and WO.sub.3, about 0.50 to 1.50 wt % of graphite powder, and the balance Fe and incidental impurities. The mixed iron powder can be manufactured by an atomizing process using water, and be used to manufacture a sintered steel having excellent machinability, strength and toughness without forming soot, even if sintered in a hydrogen-containing atmosphere.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: February 4, 1997
    Assignee: Kawasaki Steel Corporation
    Inventors: Satoshi Uenosono, Kuniaki Ogura
  • Patent number: 5565387
    Abstract: Electrical heating elements and related articles having oxidation resistance at high temperatures, produced by a method involving micropyretic synthesis. A composition subjected to micropyretic synthesis comprises a filler material, a reactive system capable of undergoing micropyretic synthesis, and (optionally) a plasticizer or extrusion agent. The method of preparation of articles includes slurry techniques, plastic extrusion, slip casting, or coating.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: October 15, 1996
    Inventors: Jainagesh A. Sekhar, Naiping Zhu
  • Patent number: 5501728
    Abstract: The present invention relates to a friction material for use in manufacturing various friction bearing components such as brakes, clutches, couplings, transmission systems and the like. The composition of the friction material includes a base friction material and a metal sulfide-iron powder alloy mixture which is added to the base material and further mixed prior to compression molding the desired component.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: March 26, 1996
    Assignee: Brake Pro, Inc.
    Inventors: Christopher C. Shepley, David R. Carter
  • Patent number: 5486222
    Abstract: Contact materials with the composition AgSnO.sub.2 Bi.sub.2 O.sub.3 CuO have proven themselves, particularly for low-voltage switching devices. These materials can contain an additive of other metal oxides. In addition to the required useful lifetime and suitable excess high temperature behavior, such materials are also supposed to fulfill all the requirements under short-circuit current stress. This is accomplished, according to the invention, in that the additional metal oxide is separately added stannic oxide and/or iron containing at least one element of the sixth sub-group of the periodic system. In the sintered composite material according to the invention, the other metal oxide is particularly ferric tungstate (FeWO.sub.4). Preferably, separately added SnO.sub.2 is present in combination with FeWO.sub.4.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: January 23, 1996
    Assignee: Siemens Aktiengesellschaft
    Inventor: Franz Hauner
  • Patent number: 5486229
    Abstract: A raw material for producing ferrite dust for friction elements and a method of producing reduced ferrite dust, capable of using, as the raw material, various collected sludge and dust which are by-products obtained at iron factories. The sludge has solid components consisting essentially of 35 to 50% total Fe, no more than 2% metallic Fe, 1.0 to 8.0% SiO.sub.2, 0.3 to 2.5% MgO, 1.0 to 6.0% CaO, 1.0 to 5.0% Al.sub.2 O.sub.3, 20 to 40% fixed carbon, and 0.1 to 1.0% ZnO, said sludge having a grain size of 20 to 250 mesh, an apparent specific gravity of 1.2 to 2.0 g/cc, a real specific gravity of 3.3 to 4.3 g/cc, and a porosity of 40 to 65%. The collected dust consists essentially of 50 to 85% true Fe, 20 to 55% FeO, 30 to 55% Fe.sub.3 O.sub.4, 2 to 12% CaO, 1 to 5% SiO.sub.2, 1 to 3% MgO, 1 to 3% MnO, and no more than 1% fixed carbon, 50 to 85% total Fe, 2 to 12% CaO, 1 to 5% SiO.sub.2, 1 to 3% MgO, 1-3% MnO, and no more than 1% fixed carbon.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: January 23, 1996
    Assignee: Kumsan Material Co., Ltd.
    Inventor: Ki Ju An
  • Patent number: 5443615
    Abstract: A method of producing a molded ceramic article comprises the first step mixing powdery raw materials and a liquid additive, thereby obtaining a mixed raw material, the second step press-molding the mixed raw material obtained in the first step in a hydrostatically applied condition of pressure, thereby removing an excess of the liquid additive to obtain a preform, and the third step calcining the preform obtained in the second step to obtain a molded ceramic article. The molded ceramic article comprises, as a principal component, copper and, as essential components, Cr and Ni within composition ranges of 0.1.ltoreq.Cr<2 wt. % and 0.1.ltoreq.Ni<10 wt. % and further at least one additive component selected from the group consisting of the following composition ratios: the following composition ratios: 0<Fe<5 wt. %, 0.ltoreq.Co<5 wt. %, 0.ltoreq.Al<10 wt. % 0.ltoreq.Ti<20 wt. %, 0.ltoreq.Mo<3 wt. %, 0.ltoreq.Si<3 wt. % 0.ltoreq.V<3 wt. % 0.ltoreq.Mg<1 wt. % and 0.ltoreq.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: August 22, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Kuwabara, Kiyoshi Ikegami, Teruaki Yoshida, Koji Takahashi, Tamotsu Harada, Takeshi Komiyama, Fumio Hirai, Masamichi Hayashi
  • Patent number: 5350628
    Abstract: A magnetic material is provided which includes a discrete phase including grains made of a first substance which comprises a magnetic metal; and a continuous phase including a thin coating film made of a second substance which comprises a dielectric or insulating substance. The thin coating film is formed on the surface of the grains and has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: September 27, 1994
    Assignee: Matsushita Electric Industrial Company, Inc.
    Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Ken Hirota, Mitsuo Satomi
  • Patent number: 5312582
    Abstract: A process for producing porous structures for use in molten carbonate fuel cells in which a powder comprising at least one of a non-alloyed metal powder and a metal oxide powder, and a ceramic oxide powder is mixed, formed into a desired shape and sintered in an oxidizing atmosphere at a temperature between 900.degree. C. and about 1400.degree. C. via reactive oxidation to form a sintered oxide structure, which is then cooled to 700.degree. C. to 1100.degree. C. and treated in a reducing atmosphere to form a metallic structure with the non-reducible oxide dispersed within the metal.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: May 17, 1994
    Assignee: Institute of Gas Technology
    Inventor: Rafael A. Donado
  • Patent number: 5266414
    Abstract: An impregnated thermionic cathode includes a porous matrix of sintered tungsten-alloy particles containing less than six percent iridium and/or other platinum-group metal. The pores of the matrix are impregnated with a temporary process impregnant such as molten copper or an organic monomer, and upon solidification is machined to a desired shape. Thereafter the temporary process impregnant is removed, and the matrix pores again infiltrated with a barium oxide such as molten barium aluminate, or other alkaline earth. A thin, iridium-rich surface activating layer, preferably of about 50% iridium, is then applied to the emitting surface. The diffusion of surface activating iridium is substantially blocked; superior emission and lifetime is provided; and the cathode is relatively low cost and easy to fabricate.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: November 30, 1993
    Assignee: Varian Associates, Inc.
    Inventors: Gerard A. Goeser, Michael C. Green
  • Patent number: 5258052
    Abstract: A powder metallurgy material for use in the manufacture of electrical contacts and having enhanced cold workability consists essentially, by weight percent, of 5 to 20% tin oxide, 2000 to 5000 ppm, preferably 2000 to less than 4000 ppm copper, 20 to 200 ppm, preferably 20 to 100 ppm, lithium, balance silver. Such materials are produced by compacting the powdered components and heating to sinter the material to at least 93% of theoretical density. Such materials subsequently can be hot or cold worked to a form useful for the manufacture of electrical contacts.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: November 2, 1993
    Assignee: Advanced Metallurgy Incorporated
    Inventor: Richard C. Bevington
  • Patent number: 5248661
    Abstract: A ductile, high electrical conductivity composite is made, containing alkaline earth metal-copper oxide particles (14), having a gold coating (16), within a skeletal matrix of hyperconducting aluminum (22) enclosed by a metallic sheath (12).
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: September 28, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: Cecil J. Mole, Alan T. Male, Walter J. Carr, Jr., Clifford K. Jones
  • Patent number: 5241745
    Abstract: To produce CuCr contact materials, it is known to use purely powder-metallurgical, sinter impregnation and smelt-metallurgical processes. Only materials produced by smelt-metallurgical processes are suitable as contact materials for vacuum contactors based on copper-chromium. According to the invention, a contact material for vacuum contactors consisting essentially of copper (Cu) and chromium (Cr) in the proportion of 50 to 70% wt. Cu and 30 to 50% wt. Cr is manufactured by pressing and sintering a powdered mixture of the components until a closed porosity is attained and by subsequently cold working the sintered body. It has been possible to demonstrate that an intimate and faultless bonding of the components Cu and Cr is obtained by cold welding the structural constituents with this process as with smelting.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: September 7, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventor: Horst Kippenberg
  • Patent number: 5238886
    Abstract: Ceramic bodies are bonded together via a layer of an oxidation reaction product of a molten metal, which metal is present in one or both of the ceramic bodies prior to bonding. At least one of the ceramic bodies comprises a ceramic product formed by the oxidation reaction of molten parent metal (e.g., alumina from molten aluminum) and grown as molten metal is transported through, and oxidized on the surface of, its own oxidation product. One or both of the ceramic bodies used in the bonding process contains surface-accessible channels of residual metal, i.e., metal channels which have resulted from molten-metal transport during the ceramic growth process. When the suitably assembled ceramic bodies are heated in the presence of an oxidant at a temperature above the melting point of the residual metal, molten metal at the surface of at least one of the ceramic bodies reacts with the oxidant to form a layer of oxidation reaction product, which may or may not incorporate at least one filler material.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Lanxide Technology Company, LP
    Inventors: Stanley J. Luszcz, Andrew W. Urquhart, Marc S. Newkirk
  • Patent number: 5238507
    Abstract: A magnetic material is provided which includes a discrete phase including grains made of a first substance which comprises a magnetic metal; and a continuous phase including a thin coating film made of a second substance which comprises a dielectric or insulating substance. The thin coating film is formed on the surface of the grains and has a mean thickness smaller than the mean particle size of the grains. The grains are separated substantially from each other by the thin coating film.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: August 24, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koichi Kugimiya, Yasuhiro Sugaya, Osamu Inoue, Ken Hirota, Mitsuo Satomi