Mixture Contains Particles Of Nonmetal Patents (Class 75/252)
  • Patent number: 7935168
    Abstract: Use of a composition comprising finely divided particles of (a) an electrically-conductive material; (b) one or more inorganic binders; and (c) zinc, wherein components (a), (b) and (c) are dispersed in a liquid vehicle, in the manufacture of an electrically-conductive pattern on a substrate for the purpose of increasing the resistivity of said electrically-conductive pattern.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: May 3, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Sarah Jane Mears
  • Publication number: 20110091344
    Abstract: A powder metal material comprises pre-alloyed iron-based powder including carbon present in an amount of 0.25 to 1.50% by weight of the pre-alloyed iron-based powder. Graphite is admixed in an amount of 0.25 to 1.50% by weight of the powder metal material. The admixed graphite includes particles finer than 200 mesh in an amount greater than 90.0% by weight of the admixed graphite. Molybdenum disulfide is admixed in an amount of 0.1 to 4.0% by weight of the powder metal material, copper is admixed in an amount of 1.0 to 5.0% by weight of the powder metal material, and the material is free of phosphorous. The powder metal material is then compacted and sintered at a temperature of 1030 to 1150° C. At least 50% of the admixed graphite of the starting powder metal material remains as free graphite after sintering.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 21, 2011
    Inventors: Denis Boyd Christopherson, Jr., Leslie John Farthing, Jeremy Raymond Koth
  • Patent number: 7927399
    Abstract: A composition for forming a green body is provided. The composition for forming the green body contains powder constituted of a metallic material and a binder containing a first resin which is decomposable by ozone and a second resin which is also decomposable by ozone but decomposed later than the first resin. The green body formed of the composition is used in producing a brown body, wherein the brown body is produced by first exposing the green body to a high ozone content atmosphere to decompose the first resin and remove the decomposed first resin and then decompose the second resin and remove the decomposed second resin, and then at least once exposing the thus obtained green body to a low ozone content atmosphere whose ozone concentration is lower than an ozone concentration of the high ozone content atmosphere.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: April 19, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Masaaki Sakata, Junichi Hayashi
  • Publication number: 20110071495
    Abstract: An embolization system having a high packing fraction of embolic particles for use in occluding the flow of body fluid through a body vessel and a method for using such an embolization system are described. The embolic particles, which are made from a shape memory material, exhibit both a collapsed state and an expanded state. The embolic particles exhibit at least a bimodal particle diameter distribution in the collapsed state and expanded state with a particle packing fraction of at least about 0.85. The mixture of embolic particles is delivered into the body vessel in the collapsed state. The particle packing fraction of the mixture in its expanded state causes the occlusion of the flow of body fluid through the body vessel.
    Type: Application
    Filed: September 21, 2009
    Publication date: March 24, 2011
    Applicant: Cook Incorporated
    Inventor: Kurt J. Tekulve
  • Publication number: 20110064937
    Abstract: A composition for precious metal sintering that yields a precious metal sinter for use in jewelry, ornaments, accessories, etc., by sintering, especially that realizes not only production of a precious metal sinter even when the precious metal content per volume of the composition for precious metal sintering is reduced but also in a striking reduction of the weight of the precious metal sinter. Further, there are disclosed a process for producing the precious metal sinter and the precious metal sinter. This composition for precious metal sintering is characterized by comprising a mixture of precious metal powder, hollow glass powder and organic binder solution.
    Type: Application
    Filed: May 28, 2008
    Publication date: March 17, 2011
    Applicant: Aida Chemcial Industries Co. Ltd
    Inventors: Seigo Mukoyama, Masaki Tanaka, Tomoaki Kasukawa
  • Patent number: 7892314
    Abstract: The present invention provides powder metal compositions and methods of making and using the same. Powder metal compositions according to the invention include base metal particles, a lubricant that transforms from a solid phase material to a viscous, liquid phase material during pressing, and a micronized deformable solid material. The micronized deformable solid material fills at least a portion of the void space between the base metal particles during pressing, which allows at least a portion of the lubricant to migrate as a viscous liquid phase material to the interface between the surface of the green compact and the wall of the mold cavity to provide lubrication that reduces the ejection force necessary to remove the green compact from the mold cavity.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: February 22, 2011
    Assignee: Apex Advanced Technologies, LLC
    Inventor: Dennis L Hammond
  • Patent number: 7892315
    Abstract: Disclosed are a solid-solution powder, a method for preparing the solid-solution powder, a cermet powder including the solid-solution powder, a method for preparing the cermet powder, a cermet using the cermet powder and a method to prepare the cermet. According to the present invention, the problem of low toughness due to high hardness that conventional cermets (especially TiC or Ti(CN) based cermet) have is resolved because a complete solid-solution phase without core/rim structure is provided to the cermets as a microstructure thereof, and in which further increased the hardness as well as the toughness, thereby substantially and considerably increasing general mechanical properties of materials using the cermet, and thus substituting WC—Co hard material and allowing manufacturing of cutting tools with high hardness and toughness.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: February 22, 2011
    Assignee: Seoul National University Industry Foundation
    Inventor: Shinhoo Kang
  • Publication number: 20110031028
    Abstract: A hardmetal composite used as wear-resistant surfaces and inlays in earth-engaging equipment includes more than one hardphase. At least one hardphase has a high average particle size, for example, from 100 ?m to 2000 ?m. The hardphases vary in terms of particle size, hardness, and binder content, and at least one hardphase includes a particulate constituent capable of plastic deformation that comprises at least 1% residual porosity.
    Type: Application
    Filed: August 6, 2009
    Publication date: February 10, 2011
    Inventors: Harold Sreshta, Eric F. Drake, Douglas B. Caraway
  • Patent number: 7871453
    Abstract: A specifically defined powder composition is provided wherein there is a requirement that the specified lubricant always be liquid at room temperature. Such powder composition contains coarse iron or iron-based powder having an average particle size between 75 and 300 ?m wherein less than 10% of the powder particles have a size below 45 ?m and the amount of particles above 212 ?m is above 20%, and as a lubricant at least one non-drying oil or a vegetable or animal based fatty acid having a crystalline melting point below 25° C., and a viscosity (?) at 40° C. above 15 mPas, wherein said viscosity is temperature dependent according to the following formula: 10 log ?=k/T+C, wherein k is the slope, T is the temperature in degrees Kelvin, and C is a constant, in an amount between 0.04 and 0.4% by weight of the composition and optional additives. The slope preferably is above 800.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: January 18, 2011
    Assignee: Höganäs AB
    Inventors: Hilmar Vidarsson, Paul Skoglund, Sven Allroth, Ermin Imamovic
  • Patent number: 7867314
    Abstract: Flowability-improving particles containing 50 to 100% by mass of carbon black are adhered to surfaces of iron powder through a binder to provide an iron-based powder for powder metallurgy which has excellent flowability and which is capable of uniformly filling a thin-walled cavity, compaction with high ejection force, and maintaining sufficient strength of a sintered body in subsequent sintering.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: January 11, 2011
    Assignee: JFE Steel Corporation
    Inventors: Tomoshige Ono, Shigeru Unami, Takashi Kawano, Yukiko Ozaki, Kyoko Fujimoto
  • Patent number: 7857903
    Abstract: To achieve the object of providing a mixture for producing sinterable mouldings that allows high pressed densities to be obtained in a green compact, a mixture is proposed which comprises at least one metallic material and/or plastics material and at least one pressing aid, the pressing aid comprising about 0.5% to about 60% by weight, based on the total amount of the pressing aid, of at least one amide, and about 40% to about 99.5% by weight, based on the total amount of the pressing aid, of at least one carnauba wax.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: December 28, 2010
    Assignee: GKN Sinter Metals Holding GmbH
    Inventors: Rene Lindenau, Diego Fax, Lars Wimbert
  • Publication number: 20100320004
    Abstract: Subterranean drill bits having good erosion resistance, strength, toughness, and thermal stability are disclosed. The drill bits comprise a bit body carrying at least one cutting element and having an infiltrated metal matrix. The infiltrated metal matrix comprises a matrix powder composition bound together by an infiltrant. The matrix powder mixture includes cast tungsten carbide powder having a particle size of ?30 (600 micron) +140 mesh (106 micron), a second component powder consisting of one or more other types of tungsten carbide particles, and a metal powder.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Applicant: KENNAMETAL, INC.
    Inventors: Xin Deng, Jonathan W. Bitler
  • Publication number: 20100316521
    Abstract: A water atomised prealloyed iron-based steel powder is provided which comprises by weight-%: 0.4-2.0 Cr, 0.1-0.8 Mn, less than 0.1 V, less than 0.1 Mo, less than 0.1 Ni, less than 0.2 Cu, less than 0.1 C, less than 0.25 O, less than 0.5 of unavoidable impurities, and the balance being iron.
    Type: Application
    Filed: December 18, 2008
    Publication date: December 16, 2010
    Applicant: HOGANAS AB (PUBL)
    Inventors: Ola Litström, Sven Bengtsson, Robert Frykholm, Ola Bergman
  • Patent number: 7850789
    Abstract: Provided are a pasty composition for aluminum brazing which has excellent coating properties, is capable of attaining favorable dimensional accuracy of products obtained after brazing, causes less erosion, and allows favorable external appearances of brazed portions (fillets); an aluminum-containing member coated with the pasty composition for aluminum brazing; and a method, using the pasty composition for aluminum brazing, for brazing the aluminum-containing members. The pasty composition for aluminum brazing contains an aluminum-containing powder. In a case where on a cumulative grading curve of the aluminum-containing powder, a particle diameter D ?m which corresponds to a Q volume % is indicated as D(Q) ?m, D(50) ?m is greater than or equal to 20 ?m and less than or equal to 150 ?m; and D(90) ?m/D(10) ?m is less than or equal to 5. A mass percentage of particles, in the aluminum-containing powder, which pass through a screen mesh having an opening of 45 ?m is less than or equal to 50%.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: December 14, 2010
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Haruzo Katoh, Takashi Watsuji, Ken Matsumura
  • Patent number: 7819938
    Abstract: A method of making metal nanoparticles and carbon nanotubes is disclosed. A mixture of a transition metal compound and an aromatic polymer, a precursor of an aromatic polymer, or an aromatic monomer is heated to form a metal nanoparticle composition, optionally containing carbon nanotubes.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: October 26, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Matthew Laskoski
  • Patent number: 7815707
    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: Grant
    Filed: January 27, 2006
    Date of Patent: October 19, 2010
    Assignee: Höganäs AB
    Inventors: Björn Johansson, Hilmar Vidarsson
  • Patent number: 7816307
    Abstract: The invention relates to a novel self-lubricating solid material; to a method of preparing such a material from a powder mixture; to said powder mixture; and to mechanical parts made of said novel material. Said powder mixture comprises a powder of a metal alloy that is a precursor for the matrix of said material, particles of a first solid lubricant such as CeF3 that are for insertion in said matrix without reacting with said metal alloy, and particles of a second solid lubricant such as WS2 or MoS2 for reacting with a component of said metal alloy during sintering of the powder to form a lubricating phase. Said material can be used for fabricating a bushing that is to receive a root of a variable-pitch vane of an airplane turbojet compressor.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: October 19, 2010
    Assignees: SNECMA, SNECMA Services
    Inventors: Frederic Braillard, Christelle Foucher, Philippe Perruchaut
  • Patent number: 7811355
    Abstract: The present invention relates to niobium powder for a capacitor, comprising a niobium layer and a mixed layer of silicon nitride and niobium, the mixed layer being present in the vicinity of the powder particle surface; granulated niobium powder thereof; a niobium sintered body using the niobium powder and the granulated powder; and a capacitor using the sintered body as one electrode. The niobium powder for a capacitor of the present invention enables to produce a niobium capacitor having a high capacitance, a low leakage current, a low ESR and good tan ? characteristics and being excellent particularly in the properties of the breakdown voltage and soldering heat resistance.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: October 12, 2010
    Assignee: Showa Denko K.K.
    Inventors: Kazuhiro Omori, Hitoshi Amita
  • Publication number: 20100252616
    Abstract: The present invention provides electrically and thermally conductive compositions for forming interconnections between electronic elements. Invention compositions comprise three or more metal or metal alloy particle types and an organic vehicle comprising a flux that is application specific. The first particle type includes a reactive high melting point metal that reacts with a reactive low melting point metal(s) in the other particles to form intermetallic species. The reactive low melting point metal(s) of the invention are provided in two distinct particle forms. The first reactive low melting point metal particle includes a carrier that facilitates the reaction with the reactive high melting point metal. The second reactive low melting point metal particle acts primarily as a source of the reactive low melting point metal.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 7, 2010
    Applicant: ORMET CIRCUITS, INC.
    Inventors: Catherine Shearer, Kenneth C. Holcomb, G. Delbert Friesen, Michael C. Matthews
  • Patent number: 7803223
    Abstract: Metal alloys having low electrical and thermal conductivity including relatively large fractions of P-Group element additions. The P-Group elements may be selected from the group including phosphorous, carbon, boron, and silicon. The resultant alloys do not exhibit significantly increased brittleness, and are applied as a coating that provides a metallic thermal barrier coating.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: September 28, 2010
    Assignee: The NanoSteel Company
    Inventor: Daniel James Branagan
  • Publication number: 20100233014
    Abstract: A powder metallurgical combination is provided comprising an iron-based powder A comprising core particles of iron to which core particles nickel is diffusion alloyed and wherein said nickel diffusion alloyed to said core particles comprises 4-7% (preferably 4.5-6%) by weight of said iron-based powder A, and a powder B substantially consisting of particles of pure iron. Further a method is provided for preparing a powder metallurgical combination.
    Type: Application
    Filed: July 10, 2008
    Publication date: September 16, 2010
    Applicant: HOGANAS AB (PUBL)
    Inventor: Mats Larsson
  • Patent number: 7794649
    Abstract: The present invention is directed to a method of making heat cells that are suitable for incorporation into disposable heating wraps. The heat cells comprise an exothermic composition comprising an absorbent gelling material, wherein the absorbent gelling material provides for improved heat application in the relief of temporary or chronic body aches and pains.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: September 14, 2010
    Assignee: Wyeth LLC
    Inventors: Vincent York-Leung Wong, Clarence Anthony Turley
  • Publication number: 20100224025
    Abstract: Flowability-improving particles containing 50 to 100% by mass of carbon black are adhered to surfaces of iron powder through a binder to provide an iron-based powder for powder metallurgy which has excellent flowability and which is capable of uniformly filling a thin-walled cavity, compaction with high ejection force, and maintaining sufficient strength of a sintered body in subsequent sintering.
    Type: Application
    Filed: September 9, 2008
    Publication date: September 9, 2010
    Applicant: JFE STEEL CORPORATION
    Inventors: Tomoshige Ono, Shigeru Unami, Takashi Kawano, Yukiko Ozaki, Kyoko Fujimoto
  • Patent number: 7789934
    Abstract: A lubricant for powder metallurgy which includes a polyhydroxycarboxylic acid amide. The lubricant improves both flowability and lubricity, irrespective of a presence or absence of any complicated pretreatment step.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: September 7, 2010
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Hironori Suzuki, Kazuhisa Fujisawa, Takayasu Fujiura, Kiyoshi Horie, Masaki Kojima, Takeshi Yoshihara
  • Publication number: 20100186551
    Abstract: A specifically defined powder composition is provided wherein there is a requirement that the specified lubricant always be liquid at room temperature. Such powder composition contains coarse iron or iron-based powder having an average particle size between 75 and 300 ?m wherein less than 10% of the powder particles have a size below 45 ?m and the amount of particles above 212 ?m is above 20%, and as a lubricant at least one non-drying oil or a vegetable or animal based fatty acid having a crystalline melting point below 25° C., and a viscosity (q) at 40° C. above 15 mPas, wherein said viscosity is temperature dependent according to the following formula: 10 log ?=k/T+C, wherein k is the slope, T is the temperature in degrees Kelvin, and C is a constant, in an amount between 0.04 and 0.4% by weight of the composition and optional additives. The slope preferably is above 800.
    Type: Application
    Filed: March 31, 2010
    Publication date: July 29, 2010
    Applicant: Hoganas AB
    Inventors: Hilmar VIDARSSON, Paul SKOGLUND, Sven ALLROTH, Ermin IMAMOVIC
  • Publication number: 20100190025
    Abstract: A most preferred composition for the mixture, prior to sintering into an article (ideally a valve seat insert), is as follows: 35% hard phase, 65% matrix (excepting incidental impurities), the hard phase component being 2.2% C, 29.1% Cr, 4.9% Co, 5.3% Ni, 20.2% W with the balance being Fe and allowing less than 2% for one or more machinability aids and solid lubricants, and the matrix component being one of a high chrome steel powder (e.g. 18% Cr, 1% Ni, 2.5% Mo, balance Fe), a low alloy steel powder (3% Cu, 1% C, balance Fe; 3% Cr, 0.5% Mo, 1% C, balance Fe; 4% Ni, 1.5% Cu, 0.5% Mo, 1% C, balance Fe; 4% Ni, 2% Cu, 1.4% Mo, 1% C, balance Fe), or a tool steel powder (5% Mo, 6% W, 4% Cr, 2% V, 1% C, balance Fe), or a low-alloy steel powder as above but which issued in conjunction with a copper infiltration process during sintering.
    Type: Application
    Filed: August 9, 2007
    Publication date: July 29, 2010
    Applicant: FEDERAL-MOGUL SINTERED PRODUCTS LIMITED
    Inventors: Leslie John Farthing, Paritosh Maulik
  • Publication number: 20100154589
    Abstract: Provided is a method of producing a nitride/tungsten nanocomposite powder. The method includes mixing nitride with tungsten or a tungsten alloy, and mechanically alloying the mixture in an inert atmosphere using a milling machine.
    Type: Application
    Filed: October 30, 2009
    Publication date: June 24, 2010
    Inventors: Soonhyung Hong, Kyongho Lee, Yoochul Shin, Dongju Lee
  • Publication number: 20100150822
    Abstract: The present invention relates to pulverulent materials suitable for storing hydrogen, and more particularly to a method of preparing such a material, in which: (A) a composite metallic material having a specific granular structure is prepared by co-melting the following mixtures: a first metallic mixture (m1), which is an alloy (a1) of body-centred cubic crystal structure, based on titanium, vanadium, chromium and/or manganese, or a mixture of these metals in the proportions of the alloy (a1); and a second mixture (m2), which is an alloy (a2), comprising 38 to 42% zirconium, niobium, molybdenum, hafnium, tantalum and/or tungsten and 56 to 60 mol % of nickel and/or copper, or else a mixture of these metals in the proportions of the alloy (a2), with a mass ratio (m2)/(m1+m2) ranging from 0.1 wt % to 20 wt %; and (B) the composite metallic material thus obtained is hydrogenated, whereby the composite material is fragmented (hydrogen decrepitation).
    Type: Application
    Filed: February 22, 2007
    Publication date: June 17, 2010
    Applicant: Centre National De La Recherche Scientifique (C.N. R.S.)
    Inventors: Jean Charbonnier, Patricia De Rango, Daniel Fruchart, Salvatore Miraglia, Sophie Rivoirard, Natalia Skryabina
  • Publication number: 20100116088
    Abstract: A high-strength composition iron powder is prepared by mixing an iron base powder with 0.5 to 3.0 mass % of an Fe—Mn powder having a particle diameter of 45 ?m or less and a Mn content in the range of 60 to 90 mass %, 1.0 to 3.0 mass % of a Cu powder, 0.3 to 1.0 mass % of a graphite powder, and 0.4 to 1.2 mass % of a powder lubricant for die-forming while adjusting the ratio of the amount of Mn contained in the Fe—Mn powder to the amount of the Cu powder in the range of 0.1 to 1. The high-strength composition iron powder is press-formed and sintered at a temperature equal to or higher than the melting point of Cu to produce a high-strength sintered part having a tensile strength of 580 MPa or higher without using expensive alloying elements such as Ni and Mo.
    Type: Application
    Filed: October 5, 2009
    Publication date: May 13, 2010
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Masaaki SATO, Satoshi Furuta, Takahiro Kudo, Takehiro Tsuchida
  • Patent number: 7713468
    Abstract: Method of producing a sintered body comprising the steps of mixing one or more powders forming hard constituents with powders forming a binder phase comprising cobalt powder where the cobalt powder comprises cobalt having mainly a fcc-structure defined as the peak height ratio between the Co-fcc(200)/Co-hcp(101) being greater than or equal to about 3/2, as measured between the baseline and maximum peak height, measured by XRD with a 2?/? focusing geometry and Cu-K? radiation. The present invention also relates to a ready-to-press powder comprising cobalt having mainly a fcc-structure and where the cobalt powder has a grain size (FSSS) of from about 0.2 to about 2.9 ?m. The present invention also relates to sintered bodies made according to the method. The sintered bodied according to the present invention have reduced porosity and less crack formation.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: May 11, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Jeanette Persson, Leif Dahl, Gerold Weinl, Ulf Rolander
  • Patent number: 7704489
    Abstract: A nanotagged chemical structure comprising a chemical structure with an associated photocatalyst and a tagging nanoparticle (a nanotag) grown in proximity to the photocatalyst, and a method for making the nanotagged chemical structure. The nanoparticle is grown in proximity to the photocatalyst by using a photocatalytic reduction reaction.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: April 27, 2010
    Assignee: Sandia Corporation
    Inventors: John A. Shelnutt, Craig J. Medforth, Yujiang Song
  • Publication number: 20100098574
    Abstract: Provided are methods comprising at least one metal powder with an extractable material and a composition comprising a polyol, a hydrophilic polymer, or both in order to form a mixture in which the metal powder and the extractable material assume respective positions. The composition functions as a homogenizing agent that allows the mixture to remain well-mixed for extended periods of time under ambient conditions. Also provided are green bodies and porous constructs, including implants, that are made in accordance with the disclosed methods. The green bodies and porous constructs have a substantially uniform porosity that is at least partially attributable to the ability of the composition to maintain the metal powder and the extractable material in their respective positions prior to sintering.
    Type: Application
    Filed: August 13, 2009
    Publication date: April 22, 2010
    Inventors: Hengda D. Liu, Bryan Smith, Richard King
  • Patent number: 7691174
    Abstract: A feedstock composition and a method of forming metal articles using powder metallurgy techniques comprise mixing metal powders and a novel aromatic binder system. The composition of the novel feedstock comprises an aromatic binder system and a metal powder. The aromatic binder system comprises an aromatic species and can further comprise lubricants, surfactants, and polymers as additives. The metal powder comprises elemental metals, metal compounds, and metal alloys, particularly for highly-reactive metals. The method of forming metal articles comprises the steps of providing and mixing the metal powder and the aromatic binder system to produce a novel feedstock. The method further comprises processing the novel feedstock into a metal article using a powder metallurgy forming technique. Metal articles formed using the present invention have an increase in carbon and oxygen contents each less than or equal to 0.2 wt % relative to the metal powder used to fabricate the article.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 6, 2010
    Assignee: Battelle Memorial Institute
    Inventors: Eric A. Nyberg, Kenneth Scott Weil, Kevin L. Simmons
  • Patent number: 7691172
    Abstract: Provided is iron-based metal powder for powder metallurgy including a metallic soap containing at least one or more types selected from a group of Ag, Au, Bi, Co, Cu, Mo, Ni, Pd, Pt, Sn, Te and W having a higher standard oxidization potential than iron, and an iron sintered body having a rust prevention function, wherein at least one or more types of metallic soap selected from a group of Ag, Au, Bi, Co, Cu, Mo, Ni, Pd, Pt, Sn, Te and W having a higher standard oxidization potential than iron is added to iron-based metal powder for powder metallurgy, and sintering is performed thereto. As a result, obtained is mixed powder for powder metallurgy capable of improving the rust prevention effect easily without having to hardly change the conventional processes.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: April 6, 2010
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Toru Imori, Atsushi Nakamura, Yasushi Narusawa, Masataka Yahagi
  • Patent number: 7687023
    Abstract: A composite alloy that contains TiC is made using a green binder system of titanium sponge granules and a liquid phase binder system comprising titanium, nickel, and aluminum. The alloy has a mass of less than 5 grams per cubic centimeter. The alloy may be bonded to a hard substrate to provide an armor tile.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: March 30, 2010
    Inventor: Robert G. Lee
  • Publication number: 20100075137
    Abstract: Fabrication of refractory metal nanoparticles and carbon nanotubes is disclosed. As an example, a method may include providing a solvent and providing a surfactant having a first surfactant configured to stabilize low oxidation states of a refractory metal and a second surfactant configured to protect refractory metal nanoparticles. The method may further include providing a refractory metal precursor and providing a reactant for reacting with the refractory metal precursor and forming refractory metal nanoparticles. The refractory metal may include rhenium, tungsten, tantalum, or hafnium. The refractory metal nanoparticles may include rhenium, tungsten, tantalum, or hafnium nanoparticles. A carbon nanotube product may include refractory metal nanoparticles and carbon nanotubes, where the refractory metal nanoparticles may include rhenium, tungsten, tantalum, or hafnium nanoparticles.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 25, 2010
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Steve Sinton, Justin S. Golightly, Jyotsna Iyer, Peter V. Bedworth, Alfred A. Zinn, Charles M. Packer
  • Patent number: 7682558
    Abstract: A metallurgical composition is provided for making compacted parts, comprising: (a) at least about 80 percent by weight of an iron or iron-based powder; (b) up to about 20 percent by weight of at least one alloying powder; (c) from about 0.05 to about 2 percent by weight of a binding agent comprising a C14-C30 fatty alcohol; and (d) from about 0.001 to about 0.2 percent by weight of a flow agent.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 23, 2010
    Assignee: Höganäs AB (PUBL)
    Inventors: Per Knutsson, Per-Olof Larsson, Hilmar Vidarsson
  • Patent number: 7678174
    Abstract: A soft magnetic material has an iron based powder that has an insulating coating on the surface and an ester wax. The ester wax is added in an amount not less than 0.02% by weight and not more than 0.6% by weight in relation to the soft magnetic material. Consequently, seizure between a metal mold and a material to be molded at the time of molding can be suppressed and the arising of a black residue can be prevented.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 16, 2010
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Terukazu Tokuoka, Kazuhiro Hirose, Haruhisa Toyoda, Takao Nishioka, Kouhei Sawada
  • 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
  • Publication number: 20100051453
    Abstract: A composition and method for fabricating high-density Ta-Al-O, Ta-Si-N, and W-Si-N sputtering targets, having particular usefulness for the sputtering of heater layers for ink jet printers. Compositions in accordance with the invention comprise a metal component, Si3N4, and a sintering aid so that the targets will successfully sputter without cracking, etc. The components are combined in powder form and pressure consolidated under heated conditions for a time sufficient to form a consolidated blend having an actual density of greater than about 95% of the theoretical density. The consolidated blend may then be machined so as to provide the final desired target.
    Type: Application
    Filed: November 5, 2009
    Publication date: March 4, 2010
    Applicants: Tosoh SMD, Inc., Hewlett-Packard Co.
    Inventors: David B. Smathers, Frank S. Valent, Michael J. Regan
  • Patent number: 7670406
    Abstract: A composite powder for a deposition of a composite coating comprises a nonmetallic component and a metallic component, the metallic component having an amorphous structure or a nanocrystalline structure. The metallic component may include an amorphous metallic alloy. The metallic alloy may include constituents having the amorphous structure. The metallic component may include a combination of the metallic alloy existing in the amorphous state and constituents of the amorphous metallic alloy in the amorphous state. The composite metal-ceramic powders are used for depositing composite coatings on a selected surface. Disclosed are several methods and systems for producing such composite powders. Disclosed are also several methods and systems for depositing composite coatings. Advantageously, the deposited coatings exhibit high corrosion resistance, high wear resistance, and excellent structural properties.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: March 2, 2010
    Inventor: Vladimir E. Belashchenko
  • Publication number: 20100047622
    Abstract: The invention provides for a cermet powder containing 75-90% by weight of at least one hard material powder, from 10 to 25% by weight of one or more matrix metal powders and up to 3% by weight of at least one modifier, wherein the matrix metal powder or powders contain from 0 to 38% by weight of cobalt, from 0 to 38% by weight of nickel, from 0 to 20% by weight of aluminum, from 0 to 90% by weight of iron and from 10 to 35% by weight of chromium and the sum of the contents of iron and chromium is in the range from 10 to 95% by weight and the sum of the contents of cobalt, nickel and iron is in the range from 65 to 95% by weight. The invention also relates to a cermet and a process to make the cermet containing the cermet powder and shaped article coated with the cermet powder and a process to make the shaped article.
    Type: Application
    Filed: September 21, 2007
    Publication date: February 25, 2010
    Applicant: H.C. Starck GmbH
    Inventors: Jürgen Fischer, Aloys Eiling, Frank Schrumpf, Stefan Zimmermann, Peter Thienel, Roland Scholl
  • Patent number: 7666245
    Abstract: Provided is iron-based metal powder for powder metallurgy including a metallic soap containing at least one or more types of metal selected from a group of Ag, Au, Bi, Co, Cu, Mo, Ni, Pd, Pt, Sn and Te having a higher standard oxidization potential than iron, and an additional metal which forms a liquid phase at a temperature of 1200° C. or less in the combination with the metal, wherein the soap contains metal for forming an alloy phase between the two. As a result, obtained is mixed powder for powder metallurgy capable of improving the rust prevention effect easily without having to hardly change the conventional processes.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: February 23, 2010
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Toru Imori, Atsushi Nakamura, Yasushi Narusawa, Masataka Yahagi
  • Patent number: 7666247
    Abstract: A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 ?m; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: February 23, 2010
    Assignee: Ningxia Orient Tantalum Industry Co., Ltd.
    Inventors: Jilin He, Luntao Pan, Aiguo Zheng, Yuewei Cheng, Yuezhong Ma, Hongdong Liu, Guoqi Yang, Chunxiang Wang, Yanping Wang, Shiping Zheng
  • Patent number: 7662209
    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 alkoxy group includes 1-3 carbon atoms.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: February 16, 2010
    Assignee: Höganäs AB
    Inventors: Mikhail Kejzelman, Paul Skoglund, Hilmar Vidarsson, Per Knutsson
  • Publication number: 20100028710
    Abstract: An open cell porous material and a method for producing it is provided. The porous material of the present invention is generally composed of particles of at least one inorganic material bonded together by a brazing agent, generally provided as inorganic brazing alloy particles. The porous material is produced by heating a mixture comprising inorganic brazing alloy particles having a first melting temperature, inorganic particles having a second melting temperature higher than the first melting temperature, a binding agent having a decomposition temperature lower than the first melting temperature and preferably a foaming agent. In practice, the mixture is heated to induce foaming thereof via the foaming agent. The solid foamed structure is then heated at the decomposition temperature to substantially eliminate the binder.
    Type: Application
    Filed: April 23, 2007
    Publication date: February 4, 2010
    Applicant: METAFOAM TECHNOLOGIES INC.
    Inventors: Emmanuelle Gros, Dominic Pilon, Alain Harvey, Mario Patry
  • Publication number: 20100015002
    Abstract: In some embodiments, the present invention is directed to a new composition of matter. Such a composition generally comprises a functionalized single-wall carbon nanotube (SWNT) which is coated with a metal that would not react with carbon at elevated temperatures. The metal-coated tube is incorporated into a metal matrix that could potentially form carbides. In some or other embodiments, the present invention is directed to methods of making such compositions.
    Type: Application
    Filed: April 2, 2007
    Publication date: January 21, 2010
    Inventors: Enrique V. Barrera, Yildiz Bayazitoglu, Kenneth Wilson
  • Patent number: 7648553
    Abstract: The present invention relates to a niobium alloy for capacitors comprising as an alloy component from 0.01 to 10 atom % of at least one element selected from the group consisting of the elements belonging to Groups 2 to 16 of the periodic table and further comprising diniobium mononitride crystals of from 0.1 to 70 mass %, wherein a powder of the niobium alloy has an average particle size of 0.05 to 5 ?m and a BET specific surface area of 0.5 to 40 m2/g, a granulated product of the niobium alloy having an average particle size of 10 to 500 ?m, a sintered body of the powder of the niobium alloy or granulated product thereof, a capacitor and a producing method thereof using the sintered body. A niobium capacitor using the powder of the niobium alloy of the present invention or a granulated product thereof has high capacitance and small leakage current value and is excellent in high-temperature property and heat resistance property.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: January 19, 2010
    Assignee: Showa Denko K.K.
    Inventors: Kazuhiro Omori, Kazumi Naito
  • Publication number: 20100009071
    Abstract: A bimodal metal nanoparticle composition includes first metal nanoparticles having an average diameter of from about 50 nm to about 1000 nm, and second stabilized metal nanoparticles having an average diameter of from about 0.5 nm to about 20 nm, the second stabilized metal nanoparticles including metal cores having a stabilizer attached to the surfaces thereof, wherein the stabilizer is a substituted dithiocarbonate.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Applicant: XEROX CORPORATION
    Inventors: Naveen CHOPRA, Yuning LI, Peter M. KAZMAIER
  • Patent number: 7645317
    Abstract: The present invention relates to a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains a graphite powder and a carbon black, and in which a mixing ratio of the graphite powder to the carbon black is in the range of 25 to 85 parts by weight to 75 to 15 parts by weight; and a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains, as a main component, a carbon black having a dibutyl phthalate absorption of 60 mL/100 g or less and a nitrogen absorption specific surface area of 50 m2/g or less. The mixed powder for powder metallurgy of the invention is less in the dust generation and segregation of the carbon supply component. Additionally, when the mixed powder for powder metallurgy of the invention is used, a green compact and a sintered body excellent in the mechanical property can be produced.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: January 12, 2010
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takayasu Fujiura, Yasuko Yakou, Satoshi Nishida, Yuuji Taniguchi, Tetsuya Goto