Sintering Which Includes A Chemical Reaction Patents (Class 419/45)
  • Patent number: 12068104
    Abstract: Systems and methods for forming a magnetically-enabled part via additive manufacturing. The method includes depositing a layer of additive manufacturing material on a build plate, melting or sintering the layer of additive manufacturing material, depositing additional layers of additive manufacturing material on previous layers of additive manufacturing material, the additive manufacturing material of at least some of the additional layers being magnetically permeable, and melting or sintering the additional layers of additive manufacturing material such that the magnetically-enabled part has a transition region including at least some of the magnetically permeable additive manufacturing material.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: August 20, 2024
    Assignee: Honeywell Federal Manufacturing & Technologies, LLC
    Inventors: Jonathan Douglas Hatch, Bob Dearth, Ida Sanchez, Francisco Garcia-Moreno
  • Patent number: 11998985
    Abstract: An assembly for densification under load along at least one direction of compression. The assembly includes: at least one volume to be densified having a powdery and/or porous composition and having variations in thickness along the direction of compression; and at least one counter-form of a powdery and/or porous composition, having at least one face facing at least one portion of the volume. The face and each of the portions are separated by at least one deformable interface layer.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: June 4, 2024
    Assignees: Universite Toulouse III—Paul Sabatier, Centre National De La Recherche Scientifique
    Inventors: Claude Estournes, Charles Maniere, Lise Durand
  • Patent number: 11986995
    Abstract: The disclosure provides methods of additive manufacture of components in layers in a powder bed by at least two laser beams that can be deflected two-dimensionally over the same powder bed region. Each laser focal spot is projected onto the power bed and is or is set to a diameter of less than or equal to 300 ?m. Components to be produced in the powder bed region are manufactured by each of the laser beams, and each individual surface contour of the component is manufactured solely by one of the laser beams.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: May 21, 2024
    Assignee: TRUMPF Laser- und Systemtechnik GmbH
    Inventors: Uwe Huber, Johannes Bauer, Michael Thielmann, Joachim Wagner, Jürgen Ortmann, Matthias Allenberg-Rabe, Detlef Breitling, Damien Buchbinder, Florian Krist
  • Patent number: 11939647
    Abstract: There is provided a tungsten sputtering target that can provide a film deposition rate with less fluctuation over the target life. A tungsten sputtering target, wherein an area ratio of crystal grains having any of {100}, {110} and {111} planes oriented to a sputtering surface is 30% or less for any of the orientation planes, and an area ratio in total of crystal grains having orientation planes oriented to the sputtering surface other than {100}, {110} and {111} planes is 46% or more, the area ratio being obtained by an analysis of a cross section perpendicular to the sputtering surface with an inverse pole figure mapping using electron backscatter diffraction.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 26, 2024
    Assignee: JX Metals Corporation
    Inventors: Takafumi Dasai, Shinichiro Senda
  • Patent number: 11890818
    Abstract: An apparatus for dispensing build powder and support powder, in a sequence of layers, and having a frame and a container. Also, a build powder pourer is at least partially filled with build powder and a support powder pourer at least partially filled with support powder, each of the pourers having a dispensing opening and a dispensing plug, controllably covering the dispensing opening. Further, a pourer-movement and dispensing plug-actuating assembly is supported by the frame over the container and includes a movement element that is selectively attachable to the build powder pourer and alternately to the support powder pourer and also capable to controllably move an attached pourer in three orthogonal dimensions and to control the dispensing plug. In addition, at least one docking station for holding a first one of the pourers; and a computing assembly controls the pourer-movement and dispensing plug-actuating assembly to create a target shape.
    Type: Grant
    Filed: April 29, 2023
    Date of Patent: February 6, 2024
    Inventor: Sergey Singov
  • Patent number: 11772163
    Abstract: The present disclosure is drawn to a three-dimensional printing system can include a powder bed material, including from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value ranging from 5 ?m to 75 ?m and a powder bed support substrate for receiving the powder bed material. The system can also include a fluid ejector operable to digitally deposit a thermally sensitive binder fluid onto a selected portion of the powder bed material on the powder bed support substrate. The thermally sensitive binder fluid can include water, a reducible metal compound, and a thermally activated reducing agent. A light source can also be present to generate a pulse energy sufficient to cause the thermally activated reducing agent to reduce the reducible metal compound and bind metal particles together to form a green three-dimensional part.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: October 3, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Krzysztof Nauka, Paul Olubummo
  • Patent number: 11767271
    Abstract: A porous material including a composite oxide body containing calcium oxide, iron oxide, and silica, and a plurality of inter-connecting microchannel structures is provided. A preparing method of porous material is further provided. With the inter-connecting microchannel structures of the porous material and the advantages of high porosity and large specific surface area, the porous material has a bright prospect in the fields of catalysts, filters, adsorption materials, and fuel carriers.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: September 26, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Hui Chang, Sheng-Min Yu, Hsiu-Hsia Lee, Chien-Chung Hsu
  • Patent number: 11759863
    Abstract: In an example of a three-dimensional (3D) printing method, a metallic build material is applied. A patterning fluid, including a metal salt, is selectively applied on at least a portion of the metallic build material. Prior to an application of additional build material, the metallic build material is exposed to light irradiation to cause the metal salt to reach a thermal decomposition temperature and thermally decompose to a metal. During the exposing, the metallic build material is maintained below a sintering temperature of the metallic build material.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 19, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Krzysztof Nauka, Thomas Anthony
  • Patent number: 11688550
    Abstract: Systems and methods for forming a magnetically-enabled part via additive manufacturing. The method includes depositing a layer of additive manufacturing material on a build plate, melting or sintering the layer of additive manufacturing material, depositing additional layers of additive manufacturing material on previous layers of additive manufacturing material, the additive manufacturing material of at least some of the additional layers being magnetically permeable, and melting or sintering the additional layers of additive manufacturing material such that the magnetically-enabled part has a transition region including at least some of the magnetically permeable additive manufacturing material.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: June 27, 2023
    Assignee: Honeywell Federal Manufacturing & Technologies, LLC
    Inventors: Jonathan Douglas Hatch, Bob Dearth, Ida Sanchez, Francisco Garcia-Moreno
  • Patent number: 11121312
    Abstract: A method for fabricating semiconductor device includes the steps of: forming an inter-metal dielectric (IMD) layer on a substrate; forming a metal interconnection in the IMD layer; forming a magnetic tunneling junction (MTJ) on the metal interconnection; forming a top electrode on the MTJ; and forming a trapping layer on the top electrode for trapping hydrogen. Preferably, the trapping layer includes a concentration gradient, in which a concentration of hydrogen decreases from a top surface of the top electrode toward the MTJ.
    Type: Grant
    Filed: September 8, 2019
    Date of Patent: September 14, 2021
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Da-Jun Lin, Tai-Cheng Hou, Bin-Siang Tsai, Ting-An Chien
  • Patent number: 11098207
    Abstract: A metallic nanoparticle dispersion includes metallic nanoparticles, a liquid carrier and an optional binder, and a silane compound according to Formula I: wherein R1, R2 and R3 are independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, an alkoxy group and an aryloxy group with the proviso that at least one of R1 to R3 represents an alkoxy group or an aryloxy group, L1 represents a divalent linking group including one to 20 carbon atoms, A represents a thiol, a disulfide or a functional moiety comprising at least one thiol or disulfide, having no more than 10 carbon atoms, and n represents 0 or 1.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 24, 2021
    Assignee: AGFA-GEVAERT NV
    Inventor: Dirk Bollen
  • Patent number: 10875127
    Abstract: The present disclosure provides a method for bonding an electronic component and a method for manufacturing a bonded body, which are capable of sintering a silver paste at a comparatively low temperature. Disclosed is a method for bonding an electronic component using a silver paste containing silver particles, the method including: applying a silver paste containing silver particles on a surface of a substrate and setting electronic components on the silver paste applied, heating in a reducing atmosphere at a temperature of lower than 300° C., and after heating in the reducing atmosphere, heating in an oxidizing atmosphere at a temperature of 300° C. or lower.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: December 29, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Teppei Kunimune
  • Patent number: 10537029
    Abstract: A method for producing an electrically conductive thin film on a substrate is disclosed. Initially, a reducible metal compound and a reducing agent are dispersed in a liquid. The dispersion is then deposited on a substrate as a thin film. The thin film along with the substrate is subsequently exposed to a pulsed electromagnetic emission to chemically react with the reducible metal compound and the reducing agent such that the thin film becomes electrically conductive.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: January 14, 2020
    Assignee: NCC NANO, LLC
    Inventors: Dave S. Pope, Kurt A. Schroder, Ian M. Rawson
  • Patent number: 10525688
    Abstract: The present invention disclosed a method of producing a three-dimensional porous tissue in-growth structure. The method includes the steps of depositing a first layer of metal powder and scanning the first layer of metal powder with a laser beam to form a portion of a plurality of predetermined unit cells. Depositing at least one additional layer of metal powder onto a previous layer and repeating the step of scanning a laser beam for at least one of the additional layers in order to continuing forming the predetermined unit cells. The method further includes continuing the depositing and scanning steps to form a medical implant.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: January 7, 2020
    Assignees: Howmedica Osteonics Corp., The University Of Liverpool
    Inventors: William O'Neill, Christopher J. Sutcliffe, Eric Jones, Robin Stamp
  • Patent number: 9907183
    Abstract: This invention relates generally to uses of novel nanomaterial composition and the systems in which they are used, and more particularly to nanomaterial compositions generally comprising carbon and a metal, which composition can be exposed to pulsed emissions to react, activate, combine, or sinter the nanomaterial composition. The nanomaterial compositions can alternatively be utilized at ambient temperature or under other means to cause such reaction, activation, combination, or sintering to occur.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: February 27, 2018
    Assignee: NCC NANO, PLLC
    Inventors: Kurt A. Schroder, Steve McCool, Denny Hamill, Dennis Wilson, Wayne Furlan, Kevin Walter, Darrin Willauer, Karl Martin
  • Patent number: 9870862
    Abstract: A number of variations may include a method including providing a first powder comprising iron; compacting the first powder into a compacted powder product having a non-planar surface, wherein the compacting includes dynamic magnetic compaction or combustion driven compaction; and increasing the magnetic coercivity of at least one of the first powder or compact powder product.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: January 16, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Shekhar G. Wakade, Yucong Wang, Edward P. Becker
  • Patent number: 8974719
    Abstract: A method of forming nano-structure composite materials that have a binder material and a nanostructure fiber material is described. A precursor material may be formed using a mixture of at least one metal powder and anchored nanostructure materials. The metal powder mixture may be (a) Ni powder and (b) NiAl powder. The anchored nanostructure materials may comprise (i) NiAl powder as a support material and (ii) carbon nanotubes attached to nanoparticles adjacent to a surface of the support material. The process of forming nano-structure composite materials typically involves sintering the mixture under vacuum in a die. When Ni and NiAl are used in the metal powder mixture Ni3Al may form as the binder material after sintering. The mixture is sintered until it consolidates to form the nano-structure composite material.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: March 10, 2015
    Assignee: Consolidated Nuclear Security, LLC
    Inventors: Roland D. Seals, Paul A. Menchhofer, Jane Y. Howe, Wei Wang
  • Patent number: 8955220
    Abstract: Methods of forming scroll compressor components are provided. The methods include forming at least one component of a scroll member from a powder metallurgy technique and joining the component with another distinct component via a sinter-brazing process. For example, a baseplate having a spiral scroll involute is joined to a hub via a joint interface having brazing material to form a braze joint with superior quality. At least one component is formed from a powder metal material including carbon and at least one species that reacts with or binds carbon to prevent migration during brazing of the sinter-brazing heat process. Optionally, during the powder metallurgy process, an alloy with a lower concentration of carbon is selected, which may be incorporated into a crystal structure with the species that prevents carbon migration.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 17, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Marc J. Scancarello, Roxana E. L. Ruxanda
  • Publication number: 20150037197
    Abstract: An oxygen source-containing composite nanometal paste including at least composite nanometal particles, in which an organic coating layer is formed around a submicron or smaller silver core, and an oxygen source, which feeds oxygen contributing to pyrolysis at a pyrolysis temperature range in which the organic coating layer is pyrolyzed. The oxygen source comprises an oxygen-containing metal compound, and the oxygen content of the oxygen source is within a range of 0.01 mass % to 2 mass % per 100 mass % of the composite nanometal particles.
    Type: Application
    Filed: February 20, 2013
    Publication date: February 5, 2015
    Inventor: Teruo Komatsu
  • Publication number: 20150030494
    Abstract: Methods and apparatus for producing an object, the method comprising: performing an Additive Manufacturing process to produce an intermediate object from provided metal or alloy, whereby the intermediate object comprises regions having a contaminant concentration level above a threshold level; based upon one or more parameters, determining a temperature and a duration; and performing, on the intermediate object, a contaminant dispersion process by, for a duration that is greater than or equal to the determined duration, heating the intermediate object to a temperature that is greater than or equal to the determined temperature and less than the melting point of the metal or alloy, the contaminant dispersion process being performed so as to disperse, within the intermediate object, a contaminant from regions of high contaminant concentration to regions of low contaminant concentration until the intermediate object comprises no regions having a contaminant concentration level above the threshold level.
    Type: Application
    Filed: February 20, 2013
    Publication date: January 29, 2015
    Inventor: Charles Malcolm WARD-CLOSE
  • Publication number: 20140370323
    Abstract: A method for increasing the resolution when forming a three-dimensional article through successive fusion of parts of a powder bed, said method comprising providing a vacuum chamber, providing an electron gun, providing a first powder layer on a work table inside said vacuum chamber, directing an electron beam from said electron gun over said work table causing the powder layer to fuse in selected locations to form a first cross section of said three-dimensional article, providing a second powder layer on said work table, directing the electron beam over said work table causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article, reducing the pressure in the vacuum chamber from a first pressure level to a second pressure level between the providing of said first powder layer and said second powder layer.
    Type: Application
    Filed: December 4, 2012
    Publication date: December 18, 2014
    Applicant: ARCAM AB
    Inventor: Ulf Ackelid
  • Patent number: 8802004
    Abstract: The invention relates to components which are produced or processed by powder metallurgy, and to processes for producing components of this type. The components produced by powder metallurgy are intended both to have porous regions and to provide fluid-tight properties, and it should also be possible to produce them at correspondingly low cost and suitably flexibly. For this purpose, a component of this type has at least one porous region, which is formed from an intermetallic phase or solid solutions. However, it may also have a corresponding surface coating. Moreover, in a component of this type there is at least one areal fluid-tight region which is formed from a meta or metal alloy of the corresponding intermetallic phase or solid solution.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: August 12, 2014
    Assignees: Alantum Corporation, Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Dirk Naumann, Thomas Weissgarber, Alexander Bohm
  • Patent number: 8636947
    Abstract: The present invention provides an improved metal separator for a fuel cell and a method for preparing same. More particularly, the invention provides a metal separator for a fuel cell, whereby the separator has a surface structure that imparts reduced contact resistance, improved corrosion resistance, and stable electrical conductivity. The invention further provides a surface treatment method for making the metal separator of the invention. The inventive method comprises sintering Fe—Cr—B—V-based powder on the surface of a metal foam to form an alloy layer; and forming a nitride layer of a (Cr—V—B)N-based material while supplying nitrogen gas on the surface of the alloy layer.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: January 28, 2014
    Assignee: Hyundai Motor Company
    Inventors: Young Min Nam, Yoo Chang Yang, Suk Min Baeck, Seung Gyun Ahn
  • Patent number: 8568117
    Abstract: Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: October 29, 2013
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Marc J. Scancarello
  • Patent number: 8361381
    Abstract: A process for making a diffusion hardened medical implant having a porous surface is disclosed. The medical implant is made by a hot isostatic pressing process which simultaneously forms that porous surface and the diffusion hardened surface.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: January 29, 2013
    Assignee: Smith & Nephew, Inc.
    Inventors: Daniel A. Heuer, Vivek Pawar, Marcus Lee Scott, Shilesh C. Jani
  • Patent number: 8309839
    Abstract: A method of improving the thermoelectric figure of merit (ZT) of a high-efficiency thermoelectric material is disclosed. The method includes the addition of fullerene (C60) clusters between the crystal grains of the material. It has been found that the lattice thermal conductivity (?L) of a thermoelectric material decreases with increasing fullerene concentration, due to enhanced phonon-large defect scattering. The resulting power factor (S2/?) decrease of the material is offset by the lattice thermal conductivity reduction, leading to enhanced ZT values at temperatures of between 350 degrees K and 700 degrees K.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: November 13, 2012
    Assignees: GM Global Technology Operations LLC, Shanghai Institute of Ceramics, Chinese Academy of Sciences
    Inventors: Lidong Chen, Xun Shi, Jihui Yang, Gregory P. Meisner
  • Publication number: 20120258008
    Abstract: The present invention relates to a method for controlling the carbon and/or oxygen content in a material by forming a feedstock composition comprising at least one powder, at least one platinum group metal and at least one binder; and forming the material by powder injection molding; wherein at least a proportion of the carbon and/or oxygen is catalytically removed by the at least one platinum group metal.
    Type: Application
    Filed: October 13, 2010
    Publication date: October 11, 2012
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventor: Hugh Gavin Charles Hamilton
  • Patent number: 8273291
    Abstract: A controlled combustion synthesis apparatus comprises an ignition system, a pressure sensor for detecting internal pressure, a nitrogen supply, a gas pressure control valve for feeding nitrogen and exhausting reaction gas, means for detecting the internal temperature of the reaction container, a water cooled jacket, and a cooling plate. A temperature control system controls the temperature of the reaction container by controlling the flow of cooling water supplied to the jacket and the cooling plate in response to the detected temperature. By combustion synthesizing, while controlling the internal pressure and temperature, the apparatus can synthesize a silicon alloy including 30-70 wt. % silicon, 10-45 wt. % nitrogen, 1-40 wt. % aluminum, and 1-40 wt % oxygen.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: September 25, 2012
    Assignee: Sumikin Bussan Corporation
    Inventors: Toshiyuki Watanabe, Masafumi Matsushita, Toshitaka Sakurai, Kazuya Sato, Yoko Matsushita
  • Publication number: 20110318216
    Abstract: Disclosed herein is a method and gas atmosphere for a metal component in a continuous furnace. In one embodiment, the method and gas atmosphere comprises the use of an effective amount, or about 1 to about 10 percent volume of endo-gas, into an atmosphere comprising nitrogen and hydrogen. In another embodiment, there is provided a method sintering metal components in a furnace at a one or more operating temperatures comprising: providing a furnace comprising a belt comprising a wire mesh material wherein the metal components are supported thereupon; and sintering the components in the furnace in an atmosphere comprising nitrogen, hydrogen, and effective amount of endothermic gas at the one or more operating temperatures ranging from about 1800° F. to about 2200° F. wherein the amount of endothermic gas in the atmosphere is such that it is oxidizing to the wire mesh material and reducing to the metal components.
    Type: Application
    Filed: December 13, 2010
    Publication date: December 29, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Donald James Bowe, Anna K. Wehr-Aukland, John Lewis Green
  • Publication number: 20110176952
    Abstract: The aim of the invention is to devise a binder that is an alternative to prior art binders for producing sintered molded articles. Said aim is achieved by a binder comprising a first substance that has a first melting point and a first vapor pressure at 80° C. and a second substance that has a second melting point and a second vapor pressure at 80° C., the maximum melting point of the first and second substance amounting to about 150° C., and the minimum vapor pressure of the first and second substance amounting to about 5 torr (667 Pa) at 80° C.
    Type: Application
    Filed: February 14, 2011
    Publication date: July 21, 2011
    Applicant: GKN SINTER METALS HOLDING GMBH
    Inventors: Vladislav Kruzhanov, Lars Wimbert, Nicola De Cristofaro
  • Publication number: 20110020164
    Abstract: The process for producing, processing, sintering, pressing or extruding thermoelectric materials with heat treatment under inert gas or under reduced pressure at temperatures in the range from 100 to 900° C. comprises producing, processing, sintering, pressing or extruding in the presence of oxygen scavengers which form thermodynamically stable oxides in the presence of free oxygen under the production, processing, sintering, pressing or extrusion conditions and hence keep free oxygen away from the thermoelectric material.
    Type: Application
    Filed: July 26, 2010
    Publication date: January 27, 2011
    Applicant: BASF SE
    Inventors: Madalina Andreea STEFAN, Frank Haass
  • Patent number: 7845918
    Abstract: Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: December 7, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Marc J Scancarello
  • Patent number: 7820097
    Abstract: This invention relates generally to uses of novel nanomaterial composition and the systems in which they are used, and more particularly to nanomaterial compositions generally comprising carbon and a metal, which composition can be exposed to pulsed emissions to react, activate, combine, or sinter the nanomaterial composition. The nanomaterial compositions can alternatively be utilized at ambient temperature or under other means to cause such reaction, activation, combination, or sintering to occur.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: October 26, 2010
    Assignee: NCC Nano, LLC
    Inventors: Kurt A. Schroder, Steve McCool, Denny Hamill, Dennis Wilson, Wayne Furlan, Kevin Walter, Darrin Willauer, Karl Martin
  • Patent number: 7718116
    Abstract: A method for obtaining a selectively non-carburized powdered metal part. The steps include compacting, sintering, removing, forging and cooling. A metal powder is compacted to form a preform having at least one first surface in which a forged part is required to have a case depth and at least one second surface in which a carburized portion is required to be removed prior to forging. The preform is then sintered and carburized. After carburizing the at least one second surface of the preform is removed and subsequently forged and cooled. The forged part has at least one second surface having improved post forging properties and at least one first surface having improved performance features. A part made from the present method is also provided.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: May 18, 2010
    Assignee: GKN Sinter Metals, Inc.
    Inventor: Timothy E. Geiman
  • Patent number: 7635078
    Abstract: This invention relates to a method of brazing while the thickness of the opening between materials being brazed can not be maintained constant or can not be adjusted in the appropriate range. In order to solve this issue the porous material of metals or metal alloys consisting of Ni, Cu, Ti, Al, Ag or W should be utilized. The metallic porous material is inserted into the brazing opening mentioned above by using the softness of it, and is made to hold the brazing solder and to reinforce the bonding part after brazing.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: December 22, 2009
    Assignee: Kanto Yakin Kogyo Kabushiki Kaisha
    Inventors: Tadashi Ariga, Kiichi Kanda
  • Patent number: 7615185
    Abstract: After an alloy powder including W, Cr, at least one of Ti, Zr, and Hf, and at least one of V, Nb, and Ta is produced, the alloy powder, a powdery carbon material, and a catalyst are heat-treated in the presence of a nitrogen gas. The alloy powder is carbonitrided into a multicomponent ceramics powder, and sintered into a sintered body. Alternatively, a powder of a first substance including at least two of Ti, Al, V, Nb, Zr, Hf, Mo, Ta, Cr, and W is molded into a molded body. Then, the surface of the molded body is surrounded by a second substance including a metal element which is not contained in the powder of the first substance, and the molded body is heat-treated in an atmosphere in which N is present. A porous sintered body thus produced is crushed into a multicomponent ceramics powder.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: November 10, 2009
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Mitsuo Kuwabara
  • Patent number: 7601403
    Abstract: A method for preparing highly dense functional oxides with crystallite size in the range of 10-20 nm. Using a high pressure modification of a the Spark Plasma Sintering (SPS) technique, rapid thermal cycles (<10 min) coupled with very rapid pressure increase up to 1 GPa can be obtained allowing high degree of compaction and very limited grain growth. This combination of techniques was employed to produce the finest-grained ceramics ever prepared in bulk form in the case of fully stabilized zirconia and Sm-doped Ceria.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: October 13, 2009
    Assignee: The Regents of the University of California
    Inventors: Umberto Anselmi-Tamburini, Zuhair A. Munir, Javier E. Garay
  • Patent number: 7524475
    Abstract: A cerium oxide powder for one-component CMP slurry, which has a specific surface area of 5 m2/g or more, and a ratio of volume fraction of pores with a diameter of 3 nm or more to that of pores with a diameter less than 3 nm of 8:2˜2:8, is disclosed. A method for preparing the same, a one-component CMP slurry comprising the same as an abrasive material, and a method of shallow trench isolation using the one-component CMP slurry are also disclosed. The CMP slurry causes no precipitation of the cerium oxide powder even if it is provided as a one-component CMP slurry, because the CMP slurry uses, as an abrasive material, cerium oxide powder that is obtained via a low-temperature calcination step, optionally a pulverization step, and a high-temperature calcination step and has a high pore fraction and low strength.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: April 28, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Seung Beom Cho, Jun Seok Nho, Dong Mok Shin, Jong Pil Kim, Myoung Hwan Oh, Jang Yul Kim, Eun Mi Choi, Min Jin Ko
  • Patent number: 7470393
    Abstract: Methods of fabricating cermet materials and methods of utilizing the same such as in filtering particulate and gaseous pollutants from internal combustion engines having intermetallic and ceramic phases. The cermet material may be made from a transition metal aluminide phase and an alumina phase. The mixture may be pressed to form a green compact body and then heated in a nitrogen-containing atmosphere so as to melt aluminum particles and form the cermet. Filler materials may be added to increase the porosity or tailor the catalytic properties of the cermet material. Additionally, the cermet material may be reinforced with fibers or screens. The cermet material may also be formed so as to pass an electrical current therethrough to heat the material during use.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: December 30, 2008
    Assignee: Battelle Energy Alliance, LLC
    Inventor: Peter C. Kong
  • Publication number: 20080170656
    Abstract: A method includes fabricating an energy detector using a sol-gel process.
    Type: Application
    Filed: January 16, 2007
    Publication date: July 17, 2008
    Inventor: Haochuan Jiang
  • Patent number: 7378053
    Abstract: The invention proposes a copper-based material with low thermal expansion and high thermal conductivity having good machinability and adaptability to nickel plating and also proposes a method for producing the same. The copper-based material is prepared through the steps of: adding 5 to 60% of iron-based alloy power having a certain value in thermal expansion coefficient into a matrix powder of pure copper phase powder and/or a precipitation hardening copper alloy powder; mixing the powders together; compacting the obtained powder mixture into a green compact and sintering it at temperatures of 400 to 600° C.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: May 27, 2008
    Assignee: Hitachi Powered Metals Co., Ltd.
    Inventor: Zenzo Ishijima
  • Patent number: 7374717
    Abstract: The present invention provides a method for efficiently producing an intermetallic compound porous material. Specifically, the invention provides a porous material production method comprising molding a mixed powder of at least two inorganic powders and performing a combustion synthesis reaction of the resulting molded mixed powder; wherein (1) the porous material contains an intermetallic compound, (2) the intermetallic compound has a three-dimensional network skeletal structure, and (3) the porous material has a relative density of not more than about 80%.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: May 20, 2008
    Assignees: Osu Corporation
    Inventor: Osamu Yamada
  • Publication number: 20080075622
    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: Application
    Filed: September 21, 2007
    Publication date: March 27, 2008
    Inventors: Masaaki Sakata, Junichi Hayashi
  • Publication number: 20080075620
    Abstract: A method for producing a sintered body is provided. The method for producing the sintered body comprising: forming a green body by molding a composition for forming a green body into a specified shape to obtain the green body, the composition comprising powder constituted of a metallic material and a binder containing a first resin which is decomposable by ozone; first debinding the green body by exposing the green body to a high ozone content atmosphere to decompose the first resin and remove the decomposed first resin form the green body to obtain a brown body; exposing the thus obtained brown body at least once to a low ozone content atmosphere whose ozone concentration is lower than an ozone concentration of the high ozone content atmosphere to obtain an intermediate brown body; and sintering the intermediate brown body which has been exposed to the low ozone content atmosphere to obtain the sintered body.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 27, 2008
    Inventors: Masaaki Sakata, Junichi Hayashi
  • Patent number: 7273581
    Abstract: The present invention relates to an improved process for in-situ preparation of alumina-(Ti,Zr) borides composite. The present invention particularly relates to fast and in-situ process for synthesis and consolidation of Al2O3—Zr/Ti B2 composites of approximate-95% density with controlled grain-growth in the range of less than or the order of 5 micrometer or less grain size using a dynamic Self propagating high temperature synthesis (SHS) process.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: September 25, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suman Kumari Mishra, Vladimir Andreevich Shcherbakov
  • Patent number: 7112302
    Abstract: The manufacturing methods according to the present teachings provide shape memory alloy products having both a uniform composition and a precise shape memory recovery temperature. In this manufacturing method, raw material powders (e.g., Ti and Ni powders) may be precisely mixed. Next, a compound may be synthesized from the raw material powder mixture using a combustion synthesis method. The combustion synthesized compound may be melted and cast into a desired shape (e.g., a shape of the final product or a shape close to that of the final product).
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: September 26, 2006
    Assignees: Yoshimi Inc., MIE TLO Co., Ltd.
    Inventors: Yoshiharu Yoshimi, Yasushi Okumura, Masataka Tokuda
  • Patent number: 7086151
    Abstract: Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: August 8, 2006
    Assignee: Copeland Corporation
    Inventor: Marc J Scancarello
  • Patent number: 7052526
    Abstract: A magnesium base composite material is provided such that compound particles generated by a solid-phase reaction with magnesium are uniformly dispersed in a magnesium alloy body. The compound particles dispersed in the body comprise magnesium silicide (Mg2Si) and magnesium oxide (MgO) so that the magnesium base composite material may have excellent strength, hardness and abrasion resistance and tempered opponent aggression.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: May 30, 2006
    Assignee: Toudai TLO, Ltd.
    Inventor: Katsuyoshi Kondoh
  • Patent number: 7048808
    Abstract: The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8?x?18 at %, 0.1?y?3.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: May 23, 2006
    Assignee: Neomax Co., Ltd.
    Inventors: Yuji Kaneko, Katsuya Taniguchi, Takao Sekino
  • Patent number: 6926777
    Abstract: The invention relates to a method for producing rod-shaped permanent magnets according to which pressed parts (2) are produced that are then assembled to a rod-shaped green product. Said green product is subsequently sintered, whereby a rod-shaped single-piece permanent magnet (1) is produced.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: August 9, 2005
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Georg Werner Reppel, Volker Zellmann