Powder Pretreatment Patents (Class 419/62)
  • Publication number: 20150147217
    Abstract: An article having a nanocomposite magnetic component and method of forming a nanocomposite magnetic component are disclosed. The article includes a plurality of nanocrystalline flake particles bonded along their prior particle boundaries. The nanocrystalline flake particles have a median grain size less than about 30 nanometers and include a first set of grains comprising predominantly permanent magnet phase and a second set of grains comprising predominantly soft magnet phase.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventors: Francis Johnson, Wanming Zhang, Min Zou, Christina Hongbing Chen
  • Publication number: 20150098856
    Abstract: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry. The aqueous emulsion includes an oxidation inhibitor in an amount between about 0.3 weight percent and about 1.2 weight percent of the hard material powder components in the aqueous slurry. The aqueous emulsion also includes a paraffin wax in an amount between about 0.25 weight percent and about 0.75 weight percent of the hard material powder components in the aqueous slurry for vacuum dried powder and in an amount about up to 2.75 weight percent of the hard material powder components in the aqueous slurry for spray dried powder. The aqueous emulsion also includes myristic acid in an amount between about 0.10 weight percent and about 0.50 weight percent of the hard material powder components in the aqueous slurry. The balance of the aqueous emulsion is water.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 9, 2015
    Inventors: Sivaraman Gopalrao, Raghavan Rengarajan, Ramesh S. Rao, Alam Rukhsar
  • Patent number: 8903035
    Abstract: Methods of forming at least a portion of a neutron absorber include combining a first material and a second material to form a compound, reducing the compound into a plurality of particles, mixing the plurality of particles with a third material, and pressing the mixture of the plurality of particles and the third material. One or more components of neutron absorbers may be formed by such methods. Neutron absorbers may include a composite material including an intermetallic compound comprising hafnium aluminide and a matrix material comprising pure aluminum.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: December 2, 2014
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Donna P. Guillen, Douglas L. Porter, W. David Swank, Arnold W. Erickson
  • Publication number: 20140342497
    Abstract: A method for producing a metal article may include: Producing a supply of a composite metal powder by: providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder; and consolidating the composite metal powder to form the metal article, the metal article comprising a sodium/molybdenum metal matrix. Also disclosed is a metal article produced accordance with this method.
    Type: Application
    Filed: August 1, 2014
    Publication date: November 20, 2014
    Inventors: Naresh Goel, Carl Cox, David Honecker, Eric Smith, Christopher Michaluk, Adam DeBoskey, Sunil Chandra Jha
  • Publication number: 20140286818
    Abstract: An embodiment in accordance with the present invention provides a method for creating and consolidating fragments and a useable structure formed from said consolidated fragments. The method includes swaging a metal powder into a first consolidated structure. The consolidated structure is ground to form particles and the particles are sifted to select those with a predetermined diameter. The particles having the predetermined diameter can then be swaged into a second consolidated structure. The resultant second consolidated structure is therefore configured to fragment controllably. The second consolidated structure can also be formed from reactive metal laminates such that the structure also has chemical energy.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 25, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: David Michael Lunking, Timothy P. Weihs
  • Publication number: 20140271324
    Abstract: Particles of iron and nickel are added to a flowing plasma stream which does not chemically alter the iron or nickel. The iron and nickel are heated and vaporized in the stream, and then a cryogenic fluid is added to the stream to rapidly cause the formation of nanometer size particles of iron and nickel. The particles are separated from the stream. The particles are preferably formed as single crystals in which the iron and nickel atoms are organized in a tetragonal L10 crystal structure which displays magnetic anisotropy. A minor portion of an additive, such as titanium, vanadium, aluminum, boron, carbon, phosphorous, or sulfur, may be added to the plasma stream with the iron and nickel to enhance formation of the desired crystal structure.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: FREDERICK E. PINKERTON
  • Patent number: 8834785
    Abstract: A method for producing a metal article according to one embodiment may involve the steps of: Providing a composite metal powder including a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form individual particles of the composite metal powder; and compressing the molybdenum/molybdenum disulfide composite metal powder under sufficient pressure to cause the mixture to behave as a nearly solid mass.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 16, 2014
    Assignee: Climax Engineered Materials, LLC
    Inventors: Matthew C. Shaw, Carl V. Cox, Yakov Epshteyn
  • Publication number: 20140210581
    Abstract: The invention provides rare earth-free permanent magnetic materials and methods of making them. The materials can be used to produce magnetic structures for use in a wide variety of commercial applications, such as motors, generators, and other electromechanical and electronic devices. Magnets fabricated using the materials can be substituted for magnets requiring rare earth elements that are costly and in limited supply. The invention provides two different types of magnetic materials. The first type is based on an iron-nickel alloy that is doped with one or more doping elements to promote the formation of L10 crystal structure. The second type is a nanocomposite particle containing magnetically hard and soft phases that interact to form an exchange spring magnetic material. The hard phase contains Fe or FeCo, and the soft phase contains AlMnC.
    Type: Application
    Filed: July 16, 2012
    Publication date: July 31, 2014
    Inventors: Laura H. Lewis, Jeffrey E. Shield, Katayun Barmak
  • Publication number: 20140212685
    Abstract: Disclosed herein is an engine 52, in particular a combustion engine or a jet-power unit, or an engine part 54, 56 made from metal, and in particular Al or Mg, or an alloy comprising one or more thereof.
    Type: Application
    Filed: March 31, 2014
    Publication date: July 31, 2014
    Applicant: Bayer International SA
    Inventors: Henning Zoz, Michael Dvorak, Horst Adams
  • Publication number: 20140205485
    Abstract: A water atomized Fe powder for a magnetic compact reduced in deformation resistance during molding and annealing temperature for removing strains is provided. A compact having improved magnetic properties is also provided. The water atomized powder containing at least one element selected from Nb, Ta, Ti, Zr and V in an amount of 0.001-0.03 atom % is soft magnetic and has a precipitation in the matrix, which is composed of at least one element selected from Nb, Ta, Ti, Zr and V and oxygen as a main component and has an average size of 0.02-0.5 ?m. Disclosed is a method for manufacturing a soft magnetic powder includes adding at least one element selected from Nb, Ta, Ti, Zr and V, and annealing in a hydrogen-containing reduction atmosphere. This method decrease gaseous impurities, particularly oxygen, and defuse it, to improve the magnetic properties of the powder and compact.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Kazuya NISHI, Yasuhisa AONO
  • Publication number: 20140151624
    Abstract: A target including: at least one refractory metal element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, and lanthanoids; at least one element selected from the group consisting of Al, Ge, Zn, Co, Cu, Ni, Fe, Si, Mg, and Ga; and at least one chalcogen element selected from the group consisting of S, Se, and Te. And a method for producing the target.
    Type: Application
    Filed: February 7, 2014
    Publication date: June 5, 2014
    Applicant: Sony Corporation
    Inventors: Kazuhiro Ohba, Yuichi Kamori, Hitoshi Kimura
  • Publication number: 20140110123
    Abstract: A method of producing at least a portion of a wellbore isolation device comprising: providing a fusible alloy matrix in a powdered form; placing at least the particles of the fusible alloy matrix powder into a mold; compacting the particles located inside the mold via an application of pressure; and fusing the particles together to form a solid material, wherein the solid material forms the at least a portion of the wellbore isolation device.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 24, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Zachary R. MURPHREE, Michael L. FRIPP, Zachary W. WALTON
  • Patent number: 8703046
    Abstract: Provided are methods of preparing high density compacted components that increase that lubricity of metallurgical powder compositions while reducing the overall organic content of the compacted component. Method of preparing high density compacted components having a high density include the steps of providing a metallurgical powder composition having particles at least partially coated with a metal phosphate layer, and compacting the metallurgical powder composition in the die at a pressure of at least about 5 tsi. The metallurgical powder composition comprises a base-metal powder, optional alloying powders, and a particulate internal lubricant. The metal phosphate at least partially coats the base-metal powder, the optional alloying powder, or both. The metal phosphate coating increases the lubricity of metallurgical powders without the need for large quantities of organic material, e.g., lubricants and binders.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: April 22, 2014
    Assignee: Hoeganaes Corporation
    Inventor: Francis G. Hanejko
  • Patent number: 8685314
    Abstract: First and second components, which may be metallic components, are joined together in a process including introducing a sinterable powder between the components, the powder being retained within a receptacle, displacing the second component towards the first component to compress the powder, and subsequently applying heat and pressure to the powder to form a sintered bond.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: April 1, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Stephen Tuppen, Daniel Clark
  • Publication number: 20140026776
    Abstract: High-density thermodynamically stable nanostructured copper-based metallic systems, and methods of making, are presented herein. A ternary high-density thermodynamically stable nanostructured copper-based metallic system includes: a solvent of copper (Cu) metal; that comprises 50 to 95 atomic percent (at. %) of the metallic system; a first solute metal dispersed in the solvent that comprises 0.01 to 50 at. % of the metallic system; and a second solute metal dispersed in the solvent that comprises 0.01 to 50 at. % of the metallic system. The internal grain size of the solvent is suppressed to no more than 250 nm at 98% of the melting point temperature of the solvent and the solute metals remain uniformly dispersed in the solvent at that temperature. Processes for forming these metallic systems include: subjecting powder metals to a high-energy milling process, and consolidating the resultant powder metal subjected to the milling to form a bulk material.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 30, 2014
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Laszlo J. Kecskes, Micah J. Gallagher, Anthony J. Roberts, Kristopher A. Darling
  • Publication number: 20140002220
    Abstract: A method of making a nanocomposite permanent magnet is provided. The method comprises applying an extreme shear deformation to hard magnetic phase nanoparticles and soft magnetic phase nanoparticles to align at least a portion of the hard phase magnetic particles and to produce a nanocomposite permanent magnet.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Francis Johnson, Robert Edgar Colborn, Judson Sloan Marte, Peter John Bonitatibus, JR., Binil Itty Ipe Kandapallil, Mohammed Haouaoui, Christina Chen
  • Publication number: 20130343945
    Abstract: A titanium metal or a titanium alloy having submicron titanium boride substantially uniformly dispersed therein and a method of making same is disclosed. Ti power of Ti alloy powder has dispersed within the particles forming the powder titanum boride which is other than whisker-shaped or spherical substantially uniformly dispersed therein.
    Type: Application
    Filed: December 6, 2012
    Publication date: December 26, 2013
    Applicant: CRISTAL METALS INC.
    Inventors: Amy Simpson, Cristal Metals Inc.
  • Publication number: 20130323107
    Abstract: A method and composition of a sintered superhard compact is provided. The sintered superhard compact body may comprise superhard particles and a binder phase. The binder phase may bond the superhard particles together. The binder phase comprises tungsten and cobalt. The ratio of tungsten to cobalt is between 1 and 2 and sum of W and Co in the sintered superhard compact is in a range of from about 2 to about 20 percent by weight.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventors: Gerold Weinl, Torbjorn Selinder, Rui Shao
  • Publication number: 20130309123
    Abstract: A transition element-doped aluminum powder metal and a method of making this powder metal are disclosed. The method of making includes forming an aluminum-transition element melt in which a transition element content of the aluminum-transition element melt is less than 6 percent by weight. The aluminum-transition element melt then powderized to form a transition element-doped aluminum powder metal. The powderization may occur by, for example, air atomization.
    Type: Application
    Filed: December 14, 2011
    Publication date: November 21, 2013
    Applicant: GKN SINTER METALS, LLC
    Inventors: Donald Paul Bishop, Richard L. Hexemer, JR., Ian W. Donaldson, Randy William Cooke
  • Publication number: 20130294958
    Abstract: A process for producing foamable metal articles and foamed metal articles and materials. A mixture of foamable material is produced by blending at least one metal powder and one gas-producing blowing agent, then compacting the mixture into a solid form of various cross-sections and configurations. The gas-producing blowing agent comprises silicon powder and talc powder.
    Type: Application
    Filed: August 19, 2011
    Publication date: November 7, 2013
    Applicant: PENNA METALS INTERNATIONAL INC.
    Inventor: Philip Mavrinac
  • Publication number: 20130243637
    Abstract: A method for classifying articles comprising magnetocalorically active material according to magnetic transition temperature comprises providing a source of articles to be classified, the source comprising articles comprising magnetocalorically active materials having differing magnetic transition temperatures, sequentially applying a magnetic field at differing temperatures to the source, the magnetic field being sufficient to exert a magnetic force on the source that is greater than the inertia of a fraction of the articles causing the fraction of the articles to move and produce an article fraction, and collecting the article fraction at each temperature to provide a plurality of separate article fractions of differing magnetic transition temperature, thus classifying the articles comprising magnetocalorically active material according to magnetic transition temperature.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventor: Matthias KATTER
  • Publication number: 20130230644
    Abstract: Various methods of treating a chromium iron interconnect for a solid oxide fuel cell stack and coating the interconnect with a ceramic layer are provided.
    Type: Application
    Filed: February 28, 2013
    Publication date: September 5, 2013
    Applicant: BLOOM ENERGY CORPORATION
    Inventors: Tad Armstrong, James Wilson, Harald Herchen, Daniel Darga, Manoj Pillai
  • Patent number: 8524148
    Abstract: A method of making a medical device which is at least partially bio-erodible and which exhibits controlled elution of therapeutic agent.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: September 3, 2013
    Assignee: Abbott Laboratories
    Inventors: Sanjay Shrivastava, John Toner, Sandra Burke, Keith Cromack, Peter Tarcha, Donald Verlee, Ho-Wah Hui
  • Publication number: 20130183189
    Abstract: A zirconium-doped aluminum powder metal and a method of making this powder metal are disclosed. The method of making includes forming an aluminum-zirconium melt in which a zirconium content of the aluminum-zirconium melt is less than 2.0 percent by weight. The aluminum-zirconium melt then powderized to form a zirconium-doped aluminum powder metal. The powderization may occur by, for example, air atomization.
    Type: Application
    Filed: October 4, 2011
    Publication date: July 18, 2013
    Applicant: GKN SINTER METALS, LLC
    Inventors: Donald Paul Bishop, Richard L. Hexemer, JR., Ian W. Donaldson, Randy William Cooke
  • Publication number: 20130129557
    Abstract: Methods for fabricating an interconnect for a fuel cell stack that include the steps of providing a metal powder, and rapidly compressing the metal powder, such as with a combustion-driven compaction apparatus, in a lubricant-free and/or sub-atmospheric environment to form the interconnect. The interconnect may have sufficient strength and density such that the interconnect may be incorporated into a fuel cell stack without performing a separate sintering and/or an oxidation step following the compressing.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 23, 2013
    Applicant: Bloom Energy Corporation
    Inventor: Bloom Energy Corporation
  • Publication number: 20130043439
    Abstract: A composite material comprises a filled skutterudite matrix of formula (I) IyCo4Sb12 in which (I) represents at least one of Yb, Eu, Ce, La, Nd, Ba and Sr, 0.05?y<1; and GaSb particles within the filled skutterudite matrix, wherein the composite material comprises 0.05-5 mol % GaSb particles. Compared with conventional materials, the composite material exhibits a substantially increased Seebeck coefficient, a slightly decreased overall thermal conductivity, and a substantially increased thermoelectric performance index across the whole temperature zone from the low temperature end to the high temperature end, as well as a greatly enhanced thermoelectric efficiency.
    Type: Application
    Filed: September 23, 2010
    Publication date: February 21, 2013
    Inventors: Lidong Chen, Xihong Chen, Lin He, Xiangyang Huang, Zhen Xiong, Wenqing Zhang
  • Patent number: 8366994
    Abstract: A method for manufacturing a cobalt (Co) alloy-based ceramic composite sputtering target is provided. A cobalt ingot and a chromium (Cr) ingot are melted in vacuum and then nebulized to form a cobalt-chromium (CoCr) alloy powder. Additionally, a ceramic powder and a platinum powder are wetly mixed to form a platinum-ceramic (Pt-ceramic) slurry, in which the ceramic powder is applied onto the platinum powder's surface uniformly. Next, the CoCr alloy powder and the Pt-ceramic slurry are wetly mixed to form a CoCrPt-ceramic slurry. Thereafter, the CoCrPt-ceramic slurry is dried, molded and compressed to form the cobalt alloy-based ceramic composite sputtering target. The resulted cobalt alloy-based ceramic composite sputtering target, which has a fine and dense structure, uniform composition and lower magnetic permeability, is beneficial to a magnetron sputter deposition process, as well as a film sputtering process used in the magnetic recording industry.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 5, 2013
    Assignee: China Steel Corporation
    Inventors: Rong-Zhi Chen, Chun-Hao Chiu, Jui-Tung Chang, Deng-Far Hsu, Chih-Huang Lai
  • Publication number: 20120315178
    Abstract: The systems and methods of this patent application are directed to producing a composition of nano-grained NiTi (Ni—nickel, Ti—titanium) alloy for use in producing nano-grained wires. Nano-grained wires, for example, are used to generate medical instruments such as an endodontic instrument. A specific method of producing the nano-grained composition includes preparing a mixture of nickel (Ni) powder and titanium (Ti) powder. The mixture of nickel powder and titanium powder is sintered to produce a nano-grained NiTi alloy. In one embodiment, an endodontic instrument is formed using the nano-grained NiTi alloy and heat-treated.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Applicant: KING SAUD UNIVERSITY
    Inventors: Dina Ibrahim Al-Sudani, Nasser Al-Aqeeli, Gianluca Gambarini
  • Publication number: 20120299675
    Abstract: A method for producing an anisotropic rare earth magnet according to the present invention comprises a forming step of obtaining a formed body by press-forming a mixed raw material of a magnet raw material capable of generating R2TM14B1-type crystals of a tetragonal compound of a rare earth element (R), boron (B), and a transition element (TM), and a diffusion raw material to serve as a supply source of at least a rare earth element (R?) and Cu; and a diffusing step of diffusing at least R? and Cu onto surfaces or into crystal grain boundaries of the R2TM14B1-type crystals by heating the formed body. In this production method, the diffusion raw material having a low melting point and high wettability envelops the R2TM14B1-type crystals, and therefore an anisotropic rare earth magnet having high coercivity can be obtained without decreasing magnetization which should be inherently exhibited by the magnet raw material.
    Type: Application
    Filed: August 27, 2010
    Publication date: November 29, 2012
    Applicant: AICHI STEEL CORPORATION
    Inventors: Yoshinobu Honkura, Chisato Mishima
  • Patent number: 8304372
    Abstract: The present invention provides a process for joining oxide-superconducting tubes with a superconducting joint. The process involves the preparation of a partially preformed superconducting material, followed by cold isopressing of the powder of partially performed superconducting material into tube shape and further provided with grooves at both ends of the tubes with a subsequent deposition of a silver layer. The process further involves the lapping of one of the end faces of a pair of said tubes to be joined. These lapped end faces of both the tubes clubbed together on a common silver bush are coated with a paste of the same partially preformed superconducting material in organic formulation. Then these coated end faces are closed pressed together to form a joint. This joint portion and the end portions of the tubes are wrapped with a perforated silver foil followed by deposition of another layer of silver.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: November 6, 2012
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shrikant Narayan Ekbote, Gursharan Kaur Padam, Narendra Kumar Arora, Mukul Sharma, Ramesh Sethi
  • Publication number: 20120230860
    Abstract: A method for purifying metal M1 particles manufactured by an electrochemical reduction process, the method comprising the steps of introducing the metal M1 particles into a heat source (13) at a temperature substantially equal to or higher than the melting point of M1 so as to cause vaporisation of some or substantially all of the contaminating impurities present, removing the vaporised impurities from the vicinity of the particles, and cooling the purified metal M1 particles. The purified particles can be used directly in lower temperature powder metallurgy processes and have a fully dense spherical particle morphology, imparting good flowability. The purification process can also be incorporated as an integral stage of sheet or stock production processes based on particle feedstocks that have been produced by electrochemical reduction.
    Type: Application
    Filed: May 22, 2012
    Publication date: September 13, 2012
    Applicant: METALYSIS LIMITED
    Inventors: Charles M. WARD-CLOSE, Alastair B. Godfrey, Paul S. Goodwin
  • Patent number: 8197885
    Abstract: A method for producing a metal article according to one embodiment may include: Providing a supply of a sodium/molybdenum composite metal powder; compacting the sodium/molybdenum composite metal powder under sufficient pressure to form a preformed article; placing the preformed article in a sealed container; raising the temperature of the sealed container to a temperature that is lower than a sintering temperature of molybdenum; and subjecting the sealed container to an isostatic pressure for a time sufficient to increase the density of the article to at least about 90% of theoretical density.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: June 12, 2012
    Assignee: Climax Engineered Materials, LLC
    Inventors: Dave Honecker, Christopher Michaluk, Carl Cox, James Cole
  • Publication number: 20120093676
    Abstract: Disclosed herein is a composite material comprising a metal and nanoparticles, in particular carbon nano tubes as well as a method of producing the same. A metal powder and the nanoparticles are processed by mechanical alloying, such as to form a composite comprising metal crystallites having an average size in the range of 1-100 nm, preferably 10 to 100 nm or in a range of more than 100 nm and up to 200 nm at least partly separated from each other by said nanoparticles.
    Type: Application
    Filed: January 28, 2010
    Publication date: April 19, 2012
    Applicant: Bayer International SA
    Inventors: Henning Zoz, Michael Dvorak, Horst Adams
  • Publication number: 20120019342
    Abstract: RE-TM based permanent magnets (single phase, hybrid, laminated or polymer bonded magnets) fabricated by using nanoflakes produced by surfactant assisted, wet, high energy ball-milling, with or without prior dry high energy ball-milling, where RE represents rare earth elements and TM represents transition metals.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Inventors: Alexander Gabay, Baozhi Cui, Melania Marinescu, Jinfang Liu, George C. Hadjipanayis
  • Publication number: 20120009080
    Abstract: A method for producing a metal article according to one embodiment may involve the steps of: Providing a composite metal powder including a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form individual particles of the composite metal powder; and compressing the molybdenum/molybdenum disulfide composite metal powder under sufficient pressure to cause the mixture to behave as a nearly solid mass.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 12, 2012
    Applicant: Climax Engineered Materials, LLC
    Inventors: Matthew C. Shaw, Carl V. Cox, Yakov Epshteyn
  • Publication number: 20120003114
    Abstract: A bulky consolidated nanostructured manganese aluminum alloy includes at least about 80% of a magnetic ? phase and having a macroscopic composition of MnXAlYDoZ, where Do is a dopant, X ranges from 52-58 atomic %, Y ranges from 42-48 atomic %, and Z ranges from 0 to 3 atomic %. A method for producing a bulky nanocrystalline solid is provided. The method includes melting a mixture of metals to form a substantially homogenous solution. The method also includes casting the solution to form ingots, measuring compositions of the ingots; crushing the ingots to form crushed powders, and milling the crushed powders to form nanocrystalline powders. The method further includes verifying the presence of ? phase and determining the amount of the ? phase, and simultaneously consolidating the nanocrystalline powders into a bulky nanocrystalline solid and undergoing phase transformation from ? phase to at least 80% ? phase, ? and ?2 phases.
    Type: Application
    Filed: June 20, 2011
    Publication date: January 5, 2012
    Inventors: Ian Baker, Qi Zeng
  • Publication number: 20110255648
    Abstract: Methods of forming at least a portion of a neutron absorber include combining a first material and a second material to form a compound, reducing the compound into a plurality of particles, mixing the plurality of particles with a third material, and pressing the mixture of the plurality of particles and the third material. One or more components of neutron absorbers may be formed by such methods. Neutron absorbers may include a composite material including an intermetallic compound comprising hafnium aluminide and a matrix material comprising pure aluminum.
    Type: Application
    Filed: June 14, 2011
    Publication date: October 20, 2011
    Applicant: BATTELLE ENERGY ALLIANCE, LLC
    Inventors: Donna P. Guillen, Douglas L. Porter, W. David Swank, Arnold W. Erickson
  • Publication number: 20110198983
    Abstract: A method is provided for producing a wire or tape, especially for use as an electrode or electrode tip in spark plugs. The method includes the following steps: (a) producing an intermetallic compound having a melting point above 1700° C.; (b) grinding the intermetallic compound; (c) mixing the intermetallic compound with metal powder; (d) introducing the mixture obtained in step (c) in a tube produced from ductile material; and (e) shaping the tube filled in step (d) to give a wire or tape. Also provided are a wrapped wire or wrapped tape, especially a semifinished product for producing electrodes or electrode tips of spark plugs.
    Type: Application
    Filed: March 29, 2007
    Publication date: August 18, 2011
    Applicant: W.C. HERAEUS GMBH
    Inventors: Harald Manhardt, David Francis Lupton, Tanja Eckardt, Holger Zingg
  • Publication number: 20110168363
    Abstract: A composite article (1; 10; 40) comprises a plurality of inclusions (5) of a magnetocalorically active material embedded in a matrix (4) of a magnetocalorically passive material. The inclusions (5) and the matrix (4) have a microstructure characteristic of a compacted powder.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 14, 2011
    Inventors: Georg Werner Reppel, Matthias Katter
  • Publication number: 20110162550
    Abstract: In making frangible objects, including lead-free bullets and other projectiles, powdered metal primary and powdered ceramic secondary phases are mixed and densified at an elevated temperature such that the ceramic phase forms a brittle network. Any combination of metal and ceramic phases may be used to achieve desired chemical and physical properties. Any appropriate mixing, forming, and/or thermal processing methods and equipment may be used. Degrees of frangibility, strength, and toughness can be adjusted to suit a given application by precursor selection, degree of mixing, relative amounts of metal and ceramic phases, forming method, and thermal and mechanical processing parameters.
    Type: Application
    Filed: January 6, 2010
    Publication date: July 7, 2011
    Inventors: Mark C. Hash, James Trent Pearson
  • Publication number: 20110150694
    Abstract: A Ti particle-dispersed magnesium-based composite material is a material having titanium particles uniformly dispersed in a magnesium matrix. Magnesium that forms the matrix and titanium particles are bonded together,) with satisfactory wettability without titanium oxide at an interface therebetween. The Ti particle-dispersed magnesium-based composite material has a tensile strength of 230 MPa or more.
    Type: Application
    Filed: March 16, 2009
    Publication date: June 23, 2011
    Applicant: Kurimoto Ltd.
    Inventors: Katsuyoshi Kondoh, Kantaro Kaneko
  • Publication number: 20110121675
    Abstract: Improvement of torque densities, miniaturization and weight saving for outer rotor type motors or permanent-magnet-field-type DC motors can be efficiently achieved by high-energy densification of a magnet. However, torque pulsation or armature reaction gives negative influences thereto. Further, in application of a slotless (coreless) structure eliminating the torque pulsation or the armature reaction, the magnetic resistance of motor magnetic circuits will be enhanced. For solving the above problems, there is provided an annular magnet that is opened in a reverse direction relative to the opening direction of a U-shaped segment fabricated in constantly-directed magnetic fields, the annular magnet having an anisotropic distribution where angles relative to inner peripheral tangent lines can be continuously changed in the range of approximately 0 to 90 degrees, and having energy density (BH)max of 160 to 186 kJ/m3.
    Type: Application
    Filed: July 16, 2008
    Publication date: May 26, 2011
    Applicant: MINEBEA CO., LTD.
    Inventor: Fumitoshi Yamashita
  • Patent number: 7943084
    Abstract: The present invention demonstrates a superior, more economical, and scalable process to increase the fluidity of metal powders by surface modification with alkylsilane reagents. This invention discloses that the most efficient process results from treatment with methyltrichlorosilane in hexane. In particular, the fluidity of aluminum powders having mean diameters smaller than 10 micrometers was considerably improved by the process of the present invention. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: May 17, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Curtis E. Johnson, Kelvin T. Higa, Roger M. Sullivan
  • Publication number: 20110056588
    Abstract: A magnet core is required to be particularly dense, made of alloys produced in a rapid solidification process and have a minimal coercitive field strength. To achieve these aims, a coarse-grain powder fraction is first produced from an amorphous strip of a soft magnetic alloy. In addition, at least one fine-grain powder fraction is produced from a nanocrystalline strip of a soft magnetic alloy. The particle fractions are then mixed to produce a multi-modal powder, wherein the particles of the coarse-grain particle fraction have an amorphous structure and the particles of the fine-grain powder fraction have a nanocrystalline structure. The multi-modal powder is then pressed to produce a magnet core.
    Type: Application
    Filed: July 11, 2007
    Publication date: March 10, 2011
    Applicant: VACUUMSHMELZE GMBH & CO.KG
    Inventor: Markus Brunner
  • Publication number: 20110044841
    Abstract: A method is provided for producing microscopically small components. The method can produce components with a size of less than 10 ?m. The method includes: (a) Production of a precipitation hardenable alloy comprising at least two phases, in which alloy of a first phase forms a matrix structure in which a second phase is embedded in the form of discrete particles of a size less than 10 ?m; (b) Dissolution of the matrix and separation of particles from the alloy; and (c) Mechanical deformation by forging respectively a separated particle with at least one striking tool to form the desired element.
    Type: Application
    Filed: October 28, 2006
    Publication date: February 24, 2011
    Applicant: TECHNISCHE UNIVERSITAT BRAUNSCHWEIG CAROLO- wILHELMINA
    Inventors: Joachim Roesler, Debashis Mukherji
  • Publication number: 20110033331
    Abstract: First and second components 2, 4, which may be metallic components, are joined together in a process which comprises introducing a sinterable powder 20 between the components, the powder being retained within a receptacle 16, displacing the component 4 towards the component 2 to compress the powder, and subsequently applying heat and pressure to the powder 20 to form a sintered bond.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 10, 2011
    Applicant: ROLLS-ROYCE PLC
    Inventors: Stephen Tuppen, Daniel Clark
  • Patent number: 7867439
    Abstract: In a first embodiment the invention relates to a process for producing a dispersoid-strengthened material, comprising the steps of: (i) providing metal particles, wherein the metal is selected from platinum group metals, gold, silver, nickel and copper, as well as alloys thereof; (ii) mixing the metal particles with a precursor compound of the dispersoid and solvent; (iii) removing the solvent, so as to obtain metal particles provided with precursor compound; and (iv) compacting the metal particles provided with precursor compound in order to obtain the dispersoid-strengthened material, wherein the precursor compound is converted into the dispersoid during the compacting operation.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: January 11, 2011
    Assignee: Umicore AG & Co., KG
    Inventors: Michael Oechsle, Stefan Zeuner
  • Publication number: 20100310408
    Abstract: Crystal fractured surfaces of raw meal powder having more equal crystal orientation relationship in the magnetic field are arranged to be assembled together so that a method of manufacturing a permanent magnet which has an extremely high degree of orientation can be provided. In this invention, raw meal powder (P) is filled into a cavity, the raw meal powder (P) is oriented in the magnetic field while being pressed or urged by pressing means that has a smaller area than the cross-sectional area of the cavity. Semi-finished product thus oriented is compression-molded into a predetermined shape in the magnetic field.
    Type: Application
    Filed: December 25, 2008
    Publication date: December 9, 2010
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Publication number: 20100251921
    Abstract: A kinetic energy penetrator is provided comprising a consolidated body of a metal nanoparticles phase comprising metal nanoparticles and a metal carbide nanoparticles phase comprising metal carbide nanoparticles. Methods for making a kinetic energy penetrator as well as material compositions comprising a consolidated body of a metal nanoparticles phase comprising metal nanoparticles and a metal carbide nanoparticles phase comprising metal carbide nanoparticles are also provided.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Applicant: Kennametal Inc.
    Inventors: David Richard Siddle, Christopher David Dunn
  • 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