Mixture Contains Particles Of Nonmetal Patents (Class 75/252)
  • Publication number: 20080134835
    Abstract: A powder metallurgical composition for making compacted parts is provided. Such composition comprises iron or an iron based powder, and a binder comprising a drying oil and a drying agent. In a preferred embodiment graphite also is present.
    Type: Application
    Filed: January 27, 2006
    Publication date: June 12, 2008
    Applicant: HOGANAS AB
    Inventors: Bjorn Johansson, Hilmar Vidarsson
  • Patent number: 7384446
    Abstract: Mo of 0.05 to 1.0% by mass is adhered to the surfaces of an iron-based powder containing Mn of 0.5% by mass or less and Mo of 0.2 to 1.5% by mass as prealloyed elements by diffusion bonding, whereby an alloy steel powder is formed. Furthermore, a Ni powder of 0.2 to 5% by mass and/or a Cu powder of 0.2 to 3% by mass are added to the alloy steel powder, whereby a mixed powder for powder metallurgy is formed. The mixed powder for powder metallurgy according to the present invention enables production of sintered bodies having high density as well as superior tensile strength and rotating bending fatigue strength.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: June 10, 2008
    Assignee: JFE Steel Corporation
    Inventors: Shigeru Unami, Satoshi Uenosono, Yukiko Ozaki
  • Publication number: 20080122141
    Abstract: A method of producing an assembled object from a plurality of layers is provided. The method comprises generating a layer of a sintered mass of a sinterable powder on a surface and transferring the layer to an object to be assembled. The sinterable powder may be applied to a surface and at least part of the sinterable powder is fused with a radiant energy source to form a layer of sintered powder. The layer of sintered powder is then transferred to the object to be assembled, the object comprising a plurality of layers of sintered powder fused together. A sinterable powder composition is also provided. The sintered powder comprises at least one thermoplastic polymer and a light absorber. Other materials such as fillers, additives, and flow agents may also be added to the composition. An object comprised of a plurality of layers wherein each layer is a sintered mass of a sinterable powder and each layer is fused at least in part to another layer is provided.
    Type: Application
    Filed: November 29, 2007
    Publication date: May 29, 2008
    Inventors: Bryan Bedal, Kris Schmidt
  • Publication number: 20080069716
    Abstract: An improved sintered material and product. A nanometer size reinforcement powder is mixed with a micron size titanium or titanium alloy powder. After the reinforcement powder is generally uniformly dispersed, the powder mixture is compacted and sintered, causing the nano reinforcement to react with the titanium or titanium alloy, producing a composite material containing nano and micron size precipitates that are uniformly distributed throughout the material.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 20, 2008
    Applicants: THE TIMKEN COMPANY, IAP RESEARCH, INC.
    Inventors: Bhanumathi Chelluri, Edward Arlen Knoth, Edward John Schumaker, Ryan D. Evans, James. L. Maloney
  • Patent number: 7329301
    Abstract: This invention relates to a composition of matter comprising associated predominantly silver nanoparticles, and a method of making the nanoparticles. It further relates to articles comprising the nanoparticles.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: February 12, 2008
    Assignee: Eastman Kodak Company
    Inventors: Yun C. Chang, Eric R. Schmittou, Peter J. Cowdery-Corvan, Seshadri Jagannathan
  • Patent number: 7329302
    Abstract: Particulate lubricants are disclosed which comprise discrete particles of a fatty monoamide, especially oleamide and discrete particles of at least one other powder metallurgy lubricant, which provide a synergistic free-flowing composition; there are also provided novel compositions of matter for forming sintered metal components comprising a mixture of sinterable powdered metal and the particulate lubricants.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 12, 2008
    Assignee: H. L. Blachford Ltd./Ltee
    Inventor: James M. McCall
  • Patent number: 7326274
    Abstract: Multiphase polymeric binders for binder assisted forming of sinterable powder bodies are formulated to demonstrate improved rheological properties in the form of newtonion or near newtonion flow behavior thereby reducing dependence of binder viscosity on shear by tailoring the molecular weight and molecular weight distribution of the polymeric binder phases and the resulting polymer admixtures of the invention demonstrate shear rate independent behavior. Reduction of interfacial tension between binder phases by introduction of at least one macromolecule with separate segments selected to be compatible with the individual phases of the binder further increases processing performance as does use of polymer macromolecules having attributes that allow them to act as surface active materials at the interface of the sinterable powder and the multiphase binder composition. Predispersion of the surface active materials in the powder is facilitated by emulsification thereof in water prior to admixture with the powder.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 5, 2008
    Assignee: Praxis Powder Technology, Inc.
    Inventor: Joseph A. Grohowski
  • Patent number: 7316725
    Abstract: Copper metal powders, methods for producing copper metal powders and products incorporating the powders. The copper metal powders have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the metal particles in a continuous manner.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: January 8, 2008
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, James Caruso, Daniel J. Skamser, Quint H. Powell, Clive D. Chandler
  • Patent number: 7300488
    Abstract: The present invention concerns a powder metal composition for producing powder metal components comprising a Co-based pre-alloyed powder, with irregularly shaped particles comprising at least 15% by weight Cr and less than 0.3% by weight C, admixed with graphite. The invention also concerns a method for producing PM components by pressing of articles to shape from the powder metal composition according to the invention and sintering them.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: November 27, 2007
    Assignee: Höganäs ab
    Inventors: Christophe Szabo, Owe Mårs
  • Patent number: 7300490
    Abstract: An iron-based mixed powder for powder metallurgy having improved machinability, without degrading the mechanical property of a sintered body made by compacting the iron-based mixed power. The iron-based mixed powder comprises a mixture of an iron-based powder, a powder for an alloy, a powder for machinability improvement, and a lubricant. The powder for machinability improvement comprises a manganese sulfide powder, and at least one selected from the group consisting of a calcium phosphate powder and a hydroxy apatite powder. Alternatively the powder for machinability improvement has an average particle diameter of 1 to 60 micrometers and comprise manganese sulfide powder and calcium fluoride powder.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: November 27, 2007
    Assignee: JFE Steel Corporation
    Inventors: Yukiko Ozaki, Hiroshi Sugihara, Satoshi Uenosono
  • Patent number: 7300489
    Abstract: Metallurgical powder compositions are provided that include calcium aluminate additives, i.e., calcium aluminate or calcium aluminate containing powders, to enhance the machinability and durability of compacted and sintered parts made therefrom. The compositions generally contain a metal-based powder, such as for example, an iron-based or nickel-based powder, that constitutes the major portion of the composition. Calcium aluminate additives are combined with the metal based powder by, for example, admixing or bonding. Optionally, common alloying powders, lubricants, binding agents, and other powder metallurgy additives can be combined with the metallurgical powder composition. The metallurgical powder composition is used by compacting it in a die cavity to produce a “green” compact that may then be sintered, preferably at relatively high temperatures.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: November 27, 2007
    Assignee: Hoeganaes Corporation
    Inventors: Christopher T. Schade, Denis Christopherson, Jr., Robert Causton
  • Patent number: 7285151
    Abstract: The invention relates to an iron based material for coating of surfaces which comprises a binding phase in the form of a corrosion dense alloy which contains at least 50% Fe, 12-30% Cr, maximally 5% Mn, 0-40% Ni, preferably 6-20% Ni and 0-7% Mo and 0-1% N and 6-20% Si, all stated as weight percent, which addition of Si lowers the liquidus temperature, that is the temperature at which the binding phase is completely melted. The invention also aims at products of metal coated with the iron based material mentioned above.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: October 23, 2007
    Assignee: Alfa Laval Corpoarate AB
    Inventors: Per Erik Sjodin, Per Olof Gunnar Dahlberg
  • Patent number: 7282079
    Abstract: A thermal spray powder includes cermet particles. Each cermet particle includes tungsten carbide particles having a mean primary particle size of 3 to 9 ?m and metal particles or ceramic particles containing chrome. The mean particle size of the cermet particles is preferably from 2 to 50 ?m and the compression strength of each cermet particle is preferably from 400 to 900 MPa. Such a thermal spray powder enables the formation of a thermal sprayed coating which has both excellent cavitation erosion resistance and slurry erosion resistance.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: October 16, 2007
    Assignee: Fujimi Incorporated
    Inventors: Hiroaki Mizuno, Tsuyoshi Itsukaichi
  • Patent number: 7264646
    Abstract: The present invention provides a lubricant system in the pressing of powders to form a part. The lubricant system is a solid at ambient conditions. However, upon application of pressure during the pressing of the metal parts, the lubricant system forms a liquid phase along the walls of cavity in which the powder is being pressed. The lubricant system may also be used in connection with a polar powder thereby providing certain beneficial results.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: September 4, 2007
    Assignee: Apex Advanced Technologies, LLC
    Inventor: Dennis L. Hammond
  • Patent number: 7261759
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch particles smaller than the average metal particle, and optionally, micronized cellulose fibers in so small an amount that the modified lubricant is present in an amount less than 2% by weight of the mixture. The Hall apparent density and the Hall flow rate of a powder metal mixture made with the modified lubricant of starch or (starch+fibers) remains within the ranges deemed desirable for production of compacted powder metal parts. Using the modified lubricant in lieu of the conventional lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: August 28, 2007
    Assignee: React-NTI, LLC
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson
  • Patent number: 7258720
    Abstract: A three-dimensional object of a desired shape is made by irradiating an optical beam on a metal powder layer to form a sintered layer and by laminating such sintered layer one above another. A metal powder composition for use in making such a three-dimensional object includes an iron-based powder material, a nickel and/or nickel alloy powder material, a copper and/or copper alloy powder material, and a graphite powder material. The graphite powder material acts to enhance the wettability during melting and to reduce microcracks during solidification.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: August 21, 2007
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Isao Fuwa, Norio Yoshida, Shushi Uenaga, Toshiharu Iwanaga, Yoshikazu Higashi, Hirohiko Togeyama, Satoshi Abe, Masataka Takenami, Takashi Shimizu
  • Patent number: 7255724
    Abstract: The invention concerns an improved segregation-resistant and dust-resistant metallurgical composition for making compacted parts, comprising at least about 80 percent by weight of an iron or iron-based powder; at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a binding/lubricating combination of polyethylene wax and ethylene bis-stearamide, the polyethylene wax having a weight average molecular weight below about 1000 and a melting point below that of ethylene bis-stearamide, and being present in amount between 10 and 90% by weight of the binding/lubricating combination.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: August 14, 2007
    Assignee: Höganäs AB
    Inventors: Mats Larsson, Åsa Ahlin, Maria Ramstedt, Hilmar Vidarsson
  • Patent number: 7247187
    Abstract: The present invention concerns a metal powder composition for the powder metal industry, wherein the metal powder is selected from the group consisting of an atomized iron-based powder or a sponge iron powder, and a lubricant composition comprising glyceryl stearate.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: July 24, 2007
    Assignee: Höganäs AB
    Inventors: Maria Ramstedt, Per Knutsson
  • Publication number: 20070151416
    Abstract: A semiconductor device (10) includes a heat source (12), a heat-dissipating component (13) for dissipating heat generated by the heat source, and thermal interface material (14) filled in spaces formed between the heat source and the heat-dissipating component. The thermal interface material includes 100 parts by weight of alkenyl groups-containing organopolysiloxane, and Si—H groups-containing compound selected from the group consisting of organo-hydrogenpolysiloxane and polyorganohydrogensiloxane, and 800 to 1200 parts by weight of fillers consisting of aluminum powder having a mean particle size of 0.1 to 1 um and zinc oxide powder having a mean particle size of 1 to 5 um in a weight ratio of from 1/1 to 10/1 .
    Type: Application
    Filed: August 10, 2006
    Publication date: July 5, 2007
    Applicant: FOXCONN TECHNOLOGY CO., LTD.
    Inventors: CHING-TAI CHENG, NIEN-TIEN CHENG
  • Patent number: 7238220
    Abstract: The invention concerns a powder composition including an iron or iron based powder and a lubricating amount of an alkylalkoxy or polyetheralkoxy silane, wherein the alkyl or polyether group has between 8 and 30 carbon atoms and the alkoxi group includes 1-3 carbon atoms.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: July 3, 2007
    Assignee: Höganäs AB
    Inventors: Mikhail Kejzelman, Paul Skoglund, Hilmar Vidarsson, Per Knutsson
  • Patent number: 7238219
    Abstract: A superfine material made by incorporation of an inorganic polymer precursor of a grain growth inhibitor into intermediates useful for the production of superfine materials. The precursor/nanostructured material composite is optionally heat treated at a temperature below the grain growth temperature of the superfine material in order to more effectively disperse the precursor. The composites are then heat treated at a temperature effective to decompose the precursor and to form superfine materials having grain growth inhibitors uniformly distributed at the grain boundaries. Synthesis of the inorganic polymer solution comprises forming an inorganic polymer from a solution of metal salts, filtering the polymer, and drying. Alloying additives as well as grain growth inhibitors may be incorporated into the superfine materials.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: July 3, 2007
    Assignee: Inframat Corporation
    Inventors: Danny T. Xiao, Chris W. Strock, Donald M. Wang, Peter R. Strutt
  • Patent number: 7217310
    Abstract: Provided is metallic powder for powder metallurgy having iron as its principal component and containing indium soap, or metallic powder for powder metallurgy further comprising at least one type selected among bismuth soap, nickel soap, cobalt soap, copper soap, manganese soap and aluminum soap in such indium soap. Thereby obtained is metallic powder for powder metallurgy capable of easily improving the rustproof effect without having to hardly change the conventional process.
    Type: Grant
    Filed: September 1, 2003
    Date of Patent: May 15, 2007
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Masataka Yahagi, Toru Imori, Atsushi Nakamura, Yasushi Narusawa, Seiji Masuda
  • Patent number: 7208027
    Abstract: A niobium powder for capacitors, which contains niobium monoxide crystal or hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: April 24, 2007
    Assignee: Showa Denko K.K.
    Inventors: Kazumi Naito, Nobuyuki Nagato
  • Patent number: 7204866
    Abstract: A niobium or tantalum powder of the present invention comprises aggregates in which primary particles of niobium or tantalum are aggregated, and have a pore distribution having a peak in the range from 1 to 20 ?m as measured by mercury porosimetry. That is, the niobium or tantalum powder of the present invention comprises aggregates having large pores, which connect with vacancies between the primary particles and facilitate the permeation of an electrolyte over the entirety of the inside of each aggregate. Accordingly, a solid electrolytic capacitor comprising an anode electrode made of the niobium or tantalum powder has high capacity and also a low ESR.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 17, 2007
    Assignee: Cabot Supermetals K.K.
    Inventors: Yukio Oda, Yujiro Mizusaki
  • Patent number: 7192464
    Abstract: The present invention provides a composition for use in pressed powder metallurgy. The composition includes a plurality of substantially dry, discrete agglomerates, a portion of which include a first metal particle adhered to a second metal particle by a binder that includes a polysaccharide. The composition can be used to form green compacts that exhibit excellent green strength and high density. The present invention also provides a process for the preparation of the composition, a method of forming a metal part using the composition and metal parts formed according to the method.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: March 20, 2007
    Assignee: Apex Advanced Technologies, LLC
    Inventor: Dennis L. Hammond
  • Patent number: 7177384
    Abstract: A basket has a lattice-like section for accommodating individual used nuclear fuel in predetermined positions in a cask. The basket is made from aluminum composite material having good neutron absorption ability, excellent mechanical property and workability. The aluminum composite material is made by having, in an Al or Al alloy base phase, B or B compound with a neutron absorption ability and an additive element, e.g. Zr or Ti, for giving a high strength property, and subjecting to a sintering under pressure.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: February 13, 2007
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazuo Murakami, Tomikane Saida, Yasuhiro Sakaguchi
  • Patent number: 7169208
    Abstract: A composition for use with alloys including extra-fine nickel powder dispersed with a hydrophobic inorganic dispersant which is preferably high-purity silica treated with hexamethyldisilazane (fumed silica). The composition breaks and prevents the agglomeration of the nickel powder, thereby preventing weaknesses in alloys, like steel for example, formed with the nickel powder. A method for making an alloy with the composition includes mixing the nickel powder with other metals and/or nonmetals and the hydrophobic fumed silica to form an alloy blend, pressing the alloy blend, and sintering the alloy blend.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: January 30, 2007
    Assignee: Inco Limited
    Inventors: Scott Thomas Campbell, Thomas Francis Stephenson, Tajpreet Singh
  • Patent number: 7163569
    Abstract: An object of the present invention is to provide a low-alloyed steel powder for sintering that can yield a sintered compact with high density and uniform characteristics, and to provide a sintered compact having such characteristics. The present invention is a raw powder for sintering, comprising Fe as its primary component and also comprising 0.8 wt % or less of C, 0.05 to 1.0 wt % of Si, 1.0 wt % or less of Mn, and 1.0 to 10.0 wt % or less of Ni, wherein the mean grain size of the raw powder for sintering is 8.5 ?m or less; and is also a granulated powder for sintering obtained by granulating the raw powder for sintering by means of a binder.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 16, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hisataka Toyoshima, Atsushi Watanabe
  • Patent number: 7160352
    Abstract: A powder material for forming an abradable coating, the material comprising a metal powder based for the most part on aluminum and containing manganese or calcium. The material is applicable to seals of a turbomachine.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: January 9, 2007
    Assignee: SNECMA Moteurs
    Inventors: Philippe Le Biez, Philippe Perruchaut, Karim Larabi, Pierre Bertrand, Christian Coddet
  • Patent number: 7153339
    Abstract: Metallurgical powder compositions of the present invention include an iron based powder combined with a master alloy powder, as a mechanical property enhancing powder. The addition of master alloy powders has been found to enhance the mechanical properties of the final, sintered, compacted parts made from metallurgical powder compositions, especially at low sintering temperatures. Metallurgical powder compositions include at least about 80 weight percent of an iron-based metallurgical powder and from about 0.10 to about 20 weight percent of a master alloy powder. Master alloy powders include iron and from about 1.0 to about 40 weight percent chromium, and from about 1.0 to about 35 weight percent silicon, based on the weight of the master alloy powder.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: December 26, 2006
    Assignee: Hoeganaes Corporation
    Inventors: Bruce Lindsley, Patrick King, Christopher T. Schade
  • Patent number: 7150775
    Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with micronized cellulose fibers in an amount less than 2% by weight of the mixture. The addition of fibers with the lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: December 19, 2006
    Assignee: React-NTI, LLC
    Inventors: Bruce Anthony Tavares, Bart Jerome Nelson
  • Patent number: 7141528
    Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: November 28, 2006
    Assignee: Cabot Corporation
    Inventors: Mark J. Hampden-Smith, Toivo T. Kodas, Plamen Atanassov, Paolina Atanassova, Klaus Kunze, Paul Napolitano, David Dericotte
  • Patent number: 7135053
    Abstract: Cotton-like aggregates (B) including grinding chips from an iron-based metal and a grinding fluid containing oil and water are compression molded for forming a brittle compact (C) having the fibrous grinding chips roughly sheared and excessive water and oil removed therefrom. The brittle compact (C) is crushed for further finely shearing the grinding chips and the resultant grinding chips are mixed with a solidification assistant (D) for producing an iron-based powder material (E) containing the solidification assistant (D).
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: November 14, 2006
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Masataka Ishihara, Akio Maemoto, Mitsuma Matsuda, Yoshihiro Seo, Shouichi Kashino
  • Patent number: 7125435
    Abstract: The present invention relates to improved metallurgical powder compositions that incorporate solid lubricants, methods for preparing and using the same, and methods of making compacted parts. The solid lubricants contain functionalized polyalkylene lubricants substituted with functional groups selected from the group consisting of a phosphate group, phosphite group, hypophosphate, hypophosphite, polyphosphate, thiophosphate, dithiophosphate, thiocarbamate, dithiocarbamate, borate, thiosulfate, sulfate group, or sulfonate group.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: October 24, 2006
    Assignee: Hoeganaes Corporation
    Inventors: George Poszmik, Sydney Luk
  • Patent number: 7118611
    Abstract: This invention uses nanoparticle mixtures to broaden the range of economic materials, improve performance across this broader range, and thereby lower costs of hydride and other storage systems. Nanoparticles can have dramatically different mechanical, chemical, electrical, thermodynamic, and/or other properties than their parent (precursor) materials. Because of this fundamental characteristic, nanophase materials can greatly improve the range of possibilities of materials selection, performance, cost, and practicality for hydride storage systems, advancing the early commerciality of such systems for hydrogen fuel cells or other applications. Among such hydrogen storage improvements are cheaper and better-performing metals, alloys, and/or compounds; lower weight; and reduced storage volumes.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: October 10, 2006
    Inventors: David G. Snow, Charles J. Brumlik
  • Patent number: 7108733
    Abstract: The present invention provides a metal slurry for electrode formation which slurry is high in dispersion property and enables formation of high density electrode films. The metal slurry for electrode formation is composed of a spherical metal powder of 0.1 to 2.0 ?m in mean particle size and a dispersion medium. By making the spherical metal powder have a mean particle size falling within the range from 0.1 to 2.0 ?m, there can be obtained a metal slurry for electrode formation which slurry can be coated through a nozzle and is high in dispersion property, without using expensive nanoparticles. In addition, as the dispersion medium, water or lower molecular weight alcohols can be used. Furthermore, the dispersion property can be improved by further adding a dispersant of 10 wt % or below (exclusive of zero) in relation to the metal powder.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: September 19, 2006
    Assignee: Massachusetts Institute of Technology
    Inventor: Yasushi Enokido
  • Patent number: 7094821
    Abstract: Preparation, handling, and spray drying, in an economic and environmentally-friendly way, of slurries for the production of tungsten carbide based hard metal tools or components by the powder injection molding or extrusion route is disclosed. The slurry used is based on ethanol-water and contains metal carbide and metallic raw materials as well as stearic acid and a low concentration of polyethylenimine (PEI). The concentration of PEI is 0.01–1 wt % of the raw material weight. This combination results in low-viscous slurries, which require less use of ethanol, energy, manpower, and equipment time in their preparation, handling, and spray drying. The invention also relates to the powder obtained by using the method.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: August 22, 2006
    Assignee: Seco Tools AB
    Inventors: Olof Kruse, Johnny Bruhn
  • Patent number: 7087550
    Abstract: A combination comprising a bed of a particulate copper-containing catalyst bed, a guard bed in the form of shaped units formed from lead carbonate and/or basic lead carbonate particles having an average (by volume) particle size below 100 ?m.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: August 8, 2006
    Assignee: Johnson Matthey PLC
    Inventor: Michael John Watson
  • Patent number: 7081149
    Abstract: A silver clay that can be obtained by sintering at a low temperature. A silver powder for silver clay is a fine Ag powder having an approximate average particle diameter equal to or less than 2 ?m incorporated at 15 to 50 weight %, with the remainder being an Ag powder having an average particle diameter that exceeds approximately 2 ?m and is equal to or less than approximately 100 ?m. The silver clay includes this silver powder incorporated at approximately 50 to 95 weight %, a binder at approximately 0.0 to 8 weight %, an oil at approximately 0.1 to 3 weight %, and a surface active agent at approximately 0.03 to 3 weight %, with the remainder being water.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: July 25, 2006
    Assignee: Mitsubishi Materials Corporation
    Inventors: Juichi Hirasawa, Yasuo Ido
  • Patent number: 7077882
    Abstract: Gold powders and methods for producing gold powders. The powders preferably have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention also includes novel devices and products formed from the gold powders.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: July 18, 2006
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, James Caruso, Daniel J. Skamser, Quint H. Powell, Clive D. Chandler
  • Patent number: 7077883
    Abstract: The present invention relates to a pre-alloyed powder and its use as a bond powder in the manufacture of powder metallurgy parts and of diamond tools in particular. A pre-alloyed powder is disclosed, based on the iron-copper dual phase system, additionally containing Co, Ni, Mo, W, oxides or carbides as reinforcing elements in the iron phase, and Sn in the copper phase.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: July 18, 2006
    Assignee: Umicore
    Inventors: Bert-Jan Kamphuis, Janneck Peersman
  • Patent number: 7074254
    Abstract: The invention aims to provide a binder for powder metallurgy, the binder containing an epoxy resin which is liquid at room temperature and a curing agent having at least one functional group selected from the group consisting of amino, mercapto and carboxyl groups. The binder involves few problems in point of workability and safety, suppress the scattering of graphite, and is superior in powder characteristics. The invention also provides a mixed powder for powder metallurgy using the binder and a method for producing the mixed powder.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: July 11, 2006
    Assignee: Kobe Steel Ltd.
    Inventors: Kazuhisa Fujisawa, Hironori Suzuki
  • Patent number: 7052777
    Abstract: A composite nanoparticle material comprising a plurality of cores and a plurality of shells. At least one of the cores is encapsulated by one of the shells. An oxygen storage material comprising a plurality of oxygen storage catalyst cores. A plurality of oxygen transport shells. At least one of the oxygen storage catalyst cores is encapsulated by one of the oxygen transport shells.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: May 30, 2006
    Assignee: Nanophase Technologies Corporation
    Inventors: Richard W. Brotzman, Jr., Marc L. Kullberg
  • Patent number: 7052527
    Abstract: A thermal spray composition and method of deposition for abradable seals for use in gas turbine engines, turbochargers and steam turbines. The thermal spray composition comprises a mixture of metal-clad solid lubricant particles and unclad solid lubricants particles for producing an abradable seal used in the compressor section of gas engines, aircraft engines, radial compressors and the like. The metal is selected from alloys of Ni, Co, Cu, Fe and Al, preferably Ni alloys, and the solid lubricant is at least one of hexagonal boron nitride, graphite, calcium fluoride, lithium fluoride and molybdenum disulphide, preferably hexagonal boron nitride or hexagonal boron nitride and graphite.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: May 30, 2006
    Assignee: Sulzer Metco (Canada) Inc.
    Inventors: Karel Hajmrle, Petr Fiala
  • Patent number: 7033413
    Abstract: A soft magnetic powder material which includes an iron system powdered particle having an insulating coat with high insulation performance, a polyamide system resin, and a thermoplastic resin having a melting point equal to or higher than 200° C.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 25, 2006
    Assignees: Aisin Seiki Kabushiki Kaisha, Hoeganaes AB
    Inventors: Yoshiharu Iyoda, Kota Maruyama, Naoki Kamiya
  • Patent number: 7011692
    Abstract: A powder composition for a capacitor comprising a tantalum or niobium and a compound having a silicon-oxygen bond, at least a part of which may be nitrided and which has an average particle size of from 0.1 to 5 ?m; a sintered body using the composition; and a capacitor constituted by the sintered body as one part electrode, and another part electrode. A capacitor favored with high reliability, lower dissipation level of power and smaller deterioration of capacitance than conventional tantalum capacitors using tantalum can be produced by using a sintered body of the powder composition for a capacitor.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: March 14, 2006
    Assignee: Showa Denko K.K.
    Inventors: Kazumi Naito, Kazuhiro Omori, Nobuyuki Nagato
  • Patent number: 7008462
    Abstract: A thermal spray composition and method of deposition for abradable seals for use in gas turbine engines, turbochargers and steam turbines. The thermal spray composition includes a solid lubricant and a ceramic preferably comprising 5 to 60 wt % total of the composition in a ratio of 1:7 to 20:1 of solid lubricant to ceramic, the balance a matrix-forming metal alloy selected from Ni, Co, Cu, Fe and Al and combinations and alloys thereof. The solid lubricant is at least one of hexagonal boron nitride, graphite, calcium fluoride, lithium fluoride, magnesium fluoride, barium fluoride, tungsten disulfide and molybdenum disulfide particles. The ceramic includes at least one of albite, illite, quartz and alumina-silica.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: March 7, 2006
    Assignee: Sulzer Metco (Canada) Inc.
    Inventors: Petr Fiala, Anthony Peter Chilkowich, Karel Hajmrle
  • Patent number: 6984255
    Abstract: The present invention relates to a thermal spraying powder capable of reliably allowing the achievement of a thermal sprayed coating having superior characteristics. A thermal spraying powder according to a first embodiment of the invention includes a predetermined amount of each of molybdenum, boron, cobalt, and chromium. The total content of molybdenum, boron, cobalt, and chromium in the thermal spraying powder is no less than 95% by weight. The primary crystal phase of the thermal spraying powder is multi-element ceramics containing at least one of cobalt and chromium along with molybdenum and boron. A thermal spraying powder according to a second embodiment of the invention includes a predetermined amount of each of molybdenum, boron, nickel, and chromium. The total content of molybdenum, boron, nickel, and chromium in this thermal spraying powder is no less than 95% by weight.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: January 10, 2006
    Assignee: Fujimi Incorporated
    Inventors: Tsuyoshi Itsukaichi, Satoru Osawa
  • Patent number: 6984254
    Abstract: A lead-free solder powder that can include a plurality of lead-free solder particles each having a general spherical shape with a diameter of 20–60 ?m. Each of the lead-free solder particles can contain Sn, Ag and Bi, with respective concentrations set such that the lead-free solder alloy has a melting temperature lower than a predetermined heat-resistant temperature of a work to be soldered.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: January 10, 2006
    Assignee: Fujitsu Limited
    Inventors: Masakazu Takesue, Yasuo Moriya, Yoshinori Nemoto, Yumiko Fukushima
  • Patent number: 6951578
    Abstract: PCD materials of this invention comprise diamond crystals that are bonded together with a catalyst/binder material. The PCD material is prepared by combining diamond grains with a catalyst/binder material either as a premixture or by infiltration during sintering. The PCD material comprises 15 percent by volume or less diamond grains sized 20 micrometers or less. The diamond grains are pressurized under elevated temperature conditions to form the desired PCD material. PCD materials of this invention can constitute the exclusive material phase of a PCD construction, or can form one or more material phase in a multi-phase material microstructure, wherein the multiple material phase can be arranged in an ordered/oriented or random fashion. PCD materials of this invention display improved properties of impact and fatigue resistance, and functional toughness, when used in complex wear environments, when compared to conventional PCs materials comprising intentionally added fine-sized diamond grains.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: October 4, 2005
    Assignee: Smith International, Inc.
    Inventors: Daniel J. Belnap, Nathan R. Anderson, Zhigang Fang, Anthony Griffo, Brian A. White