Loose Particulate Mixture (i.e., Composition) Containing Metal Particles Patents (Class 75/255)
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Publication number: 20120091844Abstract: An excellent R-T-B type rare earth permanent magnet having a high coercive force (Hcj), in which a decrease in magnetization (Br) is suppressed, is obtained by a method for producing an R-T-B type rare earth permanent magnet using, as a raw material, an R-T-B type rare earth magnet alloy material including an R-T-B type alloy (wherein R is one kind, or two or more kinds selected from Nd, Pr, Dy and Tb, 4% by mass to 10% by mass of Dy or Tb being essentially contained in the R-T-B type alloy, T is metal containing essentially Fe, and B is boron) and a metal powder.Type: ApplicationFiled: January 18, 2010Publication date: April 19, 2012Applicant: SHOWA DENKO K.K.Inventor: Kenichiro Nakajima
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Patent number: 8147585Abstract: A metal alloy feedstock and method for metal injection molding is disclosed. The alloy includes at least two components, such as a first component and a second component. The first component has a first melting point and the second component has a second melting point higher than the first melting point. The first melting point and the second melting point match to the temperature gradient of the heated barrel of an injection molding machine whereby when fed into the injection molding machine the first component melts prior to the second component melts and enables the second component to solute into the first component. Additional components may also be used.Type: GrantFiled: September 17, 2009Date of Patent: April 3, 2012Assignee: Cool Polymers, Inc.Inventors: Kevin A. McCullough, James D. Miller
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Patent number: 8142540Abstract: The invention concerns alloyed zinc powders for alkaline batteries and a method to manufacture such powders The powders are characterized by the presence of particles pierced with at least one hole. This appears to benefit the high drain discharge capacity while preserving the process ability of the powder, and the shelf life and the gassing behavior of the batteries The invented powders can be manufactured using centrifugal atomization in a cooled, oxygen-depleted atmosphere.Type: GrantFiled: April 21, 2006Date of Patent: March 27, 2012Assignee: UmicoreInventors: Christophe Henninot, Yvan Strauven
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Patent number: 8133297Abstract: The invention relates to novel pre-alloyed metal powders a method for production and use thereof.Type: GrantFiled: November 28, 2007Date of Patent: March 13, 2012Assignee: H.C. Starck GmbHInventors: Bernd Mende, Gerhard Gille, Ines Lamprecht
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Patent number: 8128725Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.Type: GrantFiled: February 29, 2008Date of Patent: March 6, 2012Assignee: Shoei Chemical Inc.Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
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Patent number: 8123874Abstract: A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided. A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (?/?), which is a ratio of a standard deviation (?) of a particle size of the metal magnetic particles 10 to an average particle size (?) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 ?m or more and 70 ?m or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10.Type: GrantFiled: September 3, 2008Date of Patent: February 28, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventors: Tomoyuki Ishimine, Toshihiro Sakamoto, Toru Maeda, Naoto Igarashi
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Patent number: 8114527Abstract: A highly corrosion-resistant, rust-prevention coating material comprising: an inorganic binder; and Zn metal particles comprised of Zn and unavoidable impurities and dispersed in the binder at the rate of 30 mass % or greater based on a dry coating film, wherein (i) the Zn metal particles include (i-1) fine-grain Zn metal particles of 0.05 to 5 ?m peak grain diameter whose grain-diameter distribution has a grain-diameter frequency distribution with a single peak and a tail on either side of the peak and (i-2) coarse-grain Zn metal particles of 6 to 100 ?m peak grain diameter whose grain-diameter distribution has a grain-diameter frequency distribution with another single peak and a tail on either side of the peak, and wherein (ii) the percentage of all Zn metal particles accounted for by Zn metal particles of 0.05 to 5 ?m grain diameter expressed in volume percentage is 5 to 99%.Type: GrantFiled: September 26, 2007Date of Patent: February 14, 2012Assignee: Nippon Steel CorporationInventors: Makoto Nagasawa, Minoru Ito, Michio Kaneko, Kenji Katoh, Shiro Imai, Masatoshi Kominami, Toshiro Terakawa, Takashi Kumai
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Patent number: 8110020Abstract: An annealed pre-alloyed water atomised iron-based powder suitable for the production of pressed and sintered components having high wear resistance is provided. The iron-based powder comprises 10-below 18% by weight of Cr, 0.5-5% by weight of each of at least one of Mo, W, V and Nb, and 0.5-2%, preferably 0.7-2% and most preferably 1-2% by weight of C. The powder has a matrix comprising less than 10% by weight of Cr, and comprises large M23C6-type carbides in combination with M7C3-type carbides. A method for production of the iron-based powder, a method for producing a pressed and sintered component having high wear resistance, and a component having high wear resistance are provided.Type: GrantFiled: September 24, 2008Date of Patent: February 7, 2012Assignee: Höganäs AB (PUBL)Inventors: Ola Bergman, Paul Dudfield Nurthen
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Patent number: 8105699Abstract: Zn alloy particles for high corrosion resistance rust prevention paint containing, by mass %, Mg: 0.01 to 30% and having a balance of Zn and unavoidable impurities, having physical fracture facets and/or cracks of a length of 0.01 ?m or more or cracks of a depth of 0.01 ?m or more, having an average particle size of 0.05 to 200 ?m, and having an aspect ratio of maximum size and minimum size (maximum size/minimum size) of an average value of 1 to 1.5. Also, a high corrosion resistance rust prevention paint containing these Zn alloy particles and a high corrosion resistance steel material and steel structure coated with that paint.Type: GrantFiled: September 7, 2007Date of Patent: January 31, 2012Assignee: Nippon Steel CorporationInventors: Kenji Katoh, Makoto Nagasawa, Minoru Ito, Michio Kaneko, Shiro Imai, Masatoshi Kominami, Toshiro Terakawa, Takashi Kumai
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Patent number: 8105414Abstract: A composition may have metal nanoparticles having a diameter of 20 nanometers or less and have a fusion temperature of less than about 220° C. A method of fabricating the metal nanoparticles may include preparing a solvent, adding a precursor with a metal to the solvent, adding a first surfactant, mixing in a reducing agent, and adding in a second surfactant to stop nanoparticle formation. Copper and/or aluminum nanoparticle compositions formed may be used for lead-free soldering of electronic components to circuit boards. A composition may include nanoparticles, which may have a copper nanocore, an amorphous aluminum shell and an organic surfactant coating. A composition may have copper or aluminum nanoparticles. About 30-50% of the copper or aluminum nanoparticles may have a diameter of 20 nanometers or less, and the remaining 70-50% of the copper or aluminum nanoparticles may have a diameter greater than 20 nanometers.Type: GrantFiled: July 30, 2009Date of Patent: January 31, 2012Assignee: Lockheed Martin CorporationInventor: Alfred A. Zinn
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Publication number: 20120015204Abstract: Stainless steel alloy composition. The stainless steel alloy composition includes rounded carbides and free chromium in a ferrite matrix. The rounded carbides have particle sizes under 5 microns. The rounded carbides include a first quantity of niobium-containing carbide and a second quantity of chromium carbide, and are substantially free of large, irregularly-shaped carbides.Type: ApplicationFiled: July 18, 2011Publication date: January 19, 2012Applicant: Climax Molybdenum CompanyInventors: Timothy J. McCabe, Chandramouleeswaran Vaidyanathan
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Patent number: 8097062Abstract: 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: GrantFiled: April 15, 2008Date of Patent: January 17, 2012Assignee: E. I. du Pont de Nemours and CompanyInventor: Saral Jane Mears
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Publication number: 20120003465Abstract: A sintering material having metallic structural particles which are provided with an organic coating. Non-organically coated, metallic and/or ceramic auxiliary particles are provided that do not outgas during the sintering process. A sintered bond, as well as a method for producing a sintered bond.Type: ApplicationFiled: January 4, 2010Publication date: January 5, 2012Inventors: Martin Rittner, Michael Guenther
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Patent number: 8084140Abstract: The invention provides an aqueous solution-based method for producing nanosized silver platelets, which employs the controlled mixing of a silver ion solution, a reducing solution, and an acidic solution in the presence of palladium ions.Type: GrantFiled: December 1, 2006Date of Patent: December 27, 2011Assignee: Clarkson UniversityInventors: Dan V. Goia, Brendan P. Farrell
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Patent number: 8075662Abstract: A nickel braze alloy composition includes a blend of a first nickel alloy and a second nickel alloy. The first nickel alloy includes about 4.75 wt %-10.5 wt % of chromium, about 5.5 wt %-6.7 wt % of aluminum, up to about 13 wt % cobalt, about 3.75 wt %-9.0 wt % of tantalum, about 1.3 wt %-2.25 wt % of molybdenum, about 3.0 wt %-6.8 wt % of tungsten, about 2.6 wt %-3.25 wt % of rhenium, up to about 0.02 wt % of boron, about 0.05 wt %-2.0 wt % of hafnium, up to about 0.14 wt % of carbon, up to about 0.35 wt % of zirconium, and a balance of nickel. The second nickel alloy includes about 21.25 wt %-22.75 wt % of chromium, about 5.7 wt %-6.3 wt % of aluminum, about 11.5 wt %-12.5 wt % of cobalt, about 5.7 wt %-6.3 wt % of silicon, boron in an amount no greater than 1.0 wt %, and a balance of nickel.Type: GrantFiled: April 25, 2008Date of Patent: December 13, 2011Assignee: United Technologies CorporationInventors: Michael Minor, Paul M. Pellet, Michael L. Miller
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COMPOSITIONS AND METHODS FOR IMPROVED DIMENSIOINAL CONTROL IN FERROUS POWDER METALLURGY APPLICATIONS
Publication number: 20110283832Abstract: Iron-based powder metallurgical compositions including both iron-copper prealloy and copper powder are described. These compositions, when compacted and sintered, result in compacts having good dimensional consistency.Type: ApplicationFiled: May 17, 2011Publication date: November 24, 2011Applicant: HOEGANAES CORPORATIONInventor: Bruce Lindsley -
Patent number: 8062624Abstract: Hydrogen is stored by adsorbing the hydrogen to a carbon nanomaterial that includes carbon nanospheres. The carbon nanospheres are multi-walled, hollow carbon nanostructures with a maximum diameter in a range from about 10 nm to about 200 nm. The nanospheres have an irregular outer surface with graphitic defects and an aspect ratio of less than 3:1. The carbon nanospheres can store hydrogen in quantities of at least 1.0% by weight.Type: GrantFiled: October 22, 2009Date of Patent: November 22, 2011Assignee: Headwaters Technology Innovation, LLCInventors: Bing Zhou, Cheng Zhang
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Publication number: 20110265757Abstract: A powder metal mixture is disclosed that provides improved mechanical properties for parts made from powder metal, such as cam caps. The powder metal mixture, upon sintering, forms an S phase intermetallic in the Al—Cu—Mg alloy system. The S phase is present in a concentration that results in an enhanced response to cold work strengthening of the powder metal part. Further, by minor adjustments to certain alloy elements, such as tin, the tensile properties of the resultant part may be adjusted.Type: ApplicationFiled: October 6, 2009Publication date: November 3, 2011Inventors: Donald Paul Bishop, Christopher D. Boland, Ian W. Donaldson, Richard L. Hexemer Jr.
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Patent number: 8048191Abstract: The present invention provides a compound powder for making magnetic powder cores, a kind of magnetic powder core, and a process for making them. Said compound powder is a mixture composing of powder A and powder B, the content of powder A is 50-96 wt % and the content of powder B is 4-50 wt %, wherein powder A is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder; powder B bears different requirement characteristics from powder A and is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder. Said powder B adopts Fe-based amorphous soft magnetic powder with good insulation property as insulating agent and thus core loss of magnetic powder core decreases.Type: GrantFiled: December 14, 2006Date of Patent: November 1, 2011Assignees: Advanced Technology & Material Co., Ltd., Central Iron & Steel Research InstituteInventors: Zhichao Lu, Deren Li, Shaoxiong Zhou, Caowei Lu, Feng Guo, Jianliang Li, Jun Wang, Tongchun Zhao, Liang Zhang
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Patent number: 8043406Abstract: Molybdenum metal powder. Molybdenum metal powder includes molybdenum metal particles having a surface-area-to-mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter.Type: GrantFiled: December 18, 2008Date of Patent: October 25, 2011Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Patent number: 8043405Abstract: Densified molybdenum metal powder. Densified molybdenum metal powder has substantially generally spherical particles, surface-area-to-mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50 g as determined by a Hall Flowmeter.Type: GrantFiled: December 18, 2008Date of Patent: October 25, 2011Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Patent number: 8034195Abstract: A solder composition for forming a solder joint. The composition includes a powder material including a solid metal matrix material and a filler material. The solid metal matrix material includes one or more of tin-silver-copper (Sn—Ag—Cu), tin-copper (Sn—Cu), tin-copper-nickel (Sn—Cu—Ni), tin-silver (Sn—Ag), tin-silver-bismuth (Sn—Ag—Bi), tin-bismuth-indium (Sn—Bi—In), tin-gold (Au—Sn), tin-zinc (Sn—Zn), tin-zinc-bismuth (Sn—Zn—Bi), tin-bismuth-silver (Sn—Bi—Ag), tin (Sn), tin-indium (Sn—In), indium (In), indium-silver (In—Ag), and tin-lead (Sn—Pb). The filler material includes one or more of copper (Cu), gold (Au), nickel (Ni), nickel-gold (Ni—Au), carbon, silver (Ag), aluminum (Al), molybdenum (Mo), nickel (Ni) or nickel-gold (Ni—Au) coated carbon, the platinum group metals (PGM's), and their alloys.Type: GrantFiled: June 9, 2010Date of Patent: October 11, 2011Assignee: Sulzer Metco (US), Inc.Inventors: Richard K. Schmid, Jacobus C. Doesburg
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Patent number: 8034154Abstract: The invention relates to a method for repairing components that consist of a superalloy. The method comprises the following steps: a solder material is applied to the repair site; the repair site with the applied solder material is heated until the latter melts; and the melted solder material is left to solidify. A powder blend, whose average composition corresponds to the component alloy constitutes the solder material, the blend comprising at least one elementary powder of the component alloy as one powder type and/or a pre-alloy of the component alloy.Type: GrantFiled: November 27, 2006Date of Patent: October 11, 2011Assignees: Siemens Aktiengesellschaft, MTU Aero Engines, GmbHInventors: Robert Singer, Andreas Volek
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Patent number: 8029923Abstract: The invention relates to a vapour-deposition material for the production of optical layers of high refractive index which comprises titanium oxide and gadolinium oxide and/or dysprosium oxide, to a process for the preparation thereof, and to the use thereof.Type: GrantFiled: January 23, 2004Date of Patent: October 4, 2011Assignee: Merck Patent GmbHInventors: Martin Friz, Reiner Dombrowski, Beate Dombrowski, legal representative, Uwe Anthes
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Patent number: 8016908Abstract: A metal powder production system includes a vacuum chamber having a vacuum chamber interior, a stock feed mechanism communicating with the vacuum chamber interior, a radiation source provided in the vacuum chamber interior, a cooling chamber having a cooling chamber interior communicating with the vacuum chamber interior and a container communicating with the cooling chamber interior. A metal powder production method is also disclosed.Type: GrantFiled: September 28, 2010Date of Patent: September 13, 2011Assignee: The Boeing CompanyInventor: Victor Blakemore Slaughter
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Publication number: 20110212339Abstract: The metallurgical composition includes a main particulate metallic material, for example iron or nickel, and at least one alloy element for hardening the main metallic material, which form a structural matrix; a particulate solid lubricant, such as graphite, hexagonal boron nitride or mixture thereof; and a particulate alloy element which is capable of forming, during the sintering of the composition conformed by compaction or by injection molding, a liquid phase, agglomerating the solid lubricant in discrete particles. The composition may include an alloy component to stabilize the alpha-iron matrix phase, during the sintering, in order to prevent the graphite solid lubricant from being solubilized in the iron. The invention further refers to a self-lubricating sintered product, obtained from the composition, and to the process for obtaining said product.Type: ApplicationFiled: September 9, 2009Publication date: September 1, 2011Inventors: Roberto Binder, Aloisio Nelmo Klein, Cristiano Binder, Gisele Hammes, Moises Luiz Parucker, Waldyr Ristow Junior
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Patent number: 8003166Abstract: In various aspects provided are methods for producing a nanoparticle within a cross-linked, collapsed polymeric material. In various embodiments, the methods comprise (a) providing a polymeric solution comprising a polymeric material; (b) collapsing at least a portion of the polymeric material about one or more precursor moieties; (c) cross-linking the polymeric material; (d) modifying at least a portion of said precursor moieties to form one or more nanoparticles and thereby forming a composite nanoparticle.Type: GrantFiled: May 7, 2008Date of Patent: August 23, 2011Assignee: Vive Nano, Inc.Inventors: Cynthia M. Goh, Jose Amado Dinglasan, Jane B. Goh, Richard Loo, Emina Veletanlic
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Patent number: 7998230Abstract: A multi-metal powder, in particular for producing diamond tools comprises iron copper, cobalt and molybdenum whose contents are expressed in the following mass percentages: Fe+Cu+Co+Mo=98 mass %, the rest being oxygen and production impurities, wherein 15%=Cu=35%, 0.03=Mo/(Co+Fe+Mo)=0.10, —Fe/Co=2. A sintered compact is obtained by hot compaction of said multi-metal powder, for example, in the form of a diamond cutting tool.Type: GrantFiled: November 3, 2006Date of Patent: August 16, 2011Assignee: Eurotungstene PoudresInventors: Maxime Bonneau, Jean-François Lartigue, Thierry Commeau, Christian Huet
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Publication number: 20110171372Abstract: The present invention provides conductive metal compositions for electronic applications, and methods of preparation and uses thereof. More specifically, the present invention provides metallic particle transient liquid phase sintering compositions containing blended formulations of metal and metal alloy components that form interconnected conductive metallurgical networks with increased stability, resistance to thermal stress and ability to mitigate CTE mismatch between materials.Type: ApplicationFiled: November 5, 2010Publication date: July 14, 2011Applicant: ORMET CIRCUITS, INC.Inventors: Catherine Shearer, Kenneth C. Holcomb, G. Delbert Friesen, Michael C. Matthews
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Patent number: 7976775Abstract: Disclosed is a binary aluminum alloy powder sintered material which comprises aluminum and iron, which has a completely crystalline microstructure comprising an aluminum matrix and an ?-Al phase and at least any one phase of an Al6Fe phase or an Al13Fe4 phase mixed in the aluminum matrix as nanocrystalline phases, and which has an extremely high strength and a well-balanced high ductility, though being free from any rare earth element.Type: GrantFiled: March 25, 2008Date of Patent: July 12, 2011Assignee: National Institute for Materials ScienceInventors: Taisuke Sasaki, Kazuhiro Hono, Toshiji Mukai
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Publication number: 20110154947Abstract: A brazing composition for the brazing of superalloys including a base material with at least one initial phase is provided. The initial phase has a solidus temperature that is below the solidus temperature of the base material and, above a certain temperature, forms with the base material and/or with at least one further initial phase at least one resultant phase, the solidus temperature of which is higher that the solidus temperature of the initial phases. Heat treatment takes place in two stages, wherein the temperature of the second heat treatment is preferably 800-1200° C. The brazing composition may likewise be of the type MCrAlX, and the power particles of the initial phase may be in the form of nanoparticles.Type: ApplicationFiled: March 9, 2011Publication date: June 30, 2011Inventors: Brigitte Heinecke, Volker Vosberg
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Patent number: 7955411Abstract: A bonding material comprising metal particles coated with an organic substance having carbon atoms of 2 to 8, wherein the metal particles comprises first portion of 100 nm or less, and a second portion larger than 100 nm but not larger than 100 ?m, each of the portions having at least peak of a particle distribution, based on a volumetric base. The disclosure is further concerned with a bonding method using the bonding material.Type: GrantFiled: December 27, 2007Date of Patent: June 7, 2011Assignee: Hitachi, Ltd.Inventors: Yusuke Yasuda, Toshiaki Morita, Eiichi Ide, Hiroshi Hozoji, Toshiaki Ishii
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Patent number: 7955721Abstract: A method of processing an article having a substrate and a cobalt-phosphorous coating disposed on the substrate includes heat treating the article. At least one physical characteristic of the cobalt-phosphorous coating is altered using the heat treating to thereby change a performance characteristic of the article. For example, the article may be an actuator component having a bore or a shaft that is movably disposed at least partially within the bore.Type: GrantFiled: January 16, 2008Date of Patent: June 7, 2011Assignee: Hamilton Sundstrand CorporationInventors: Blair A. Smith, Aaron T. Nardi
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Patent number: 7947106Abstract: Provided is Sb—Te alloy powder for sintering in which the maximum grain size of the powder obtained by subjecting gas atomized powder of an Sb—Te alloy to mechanical pulverization is 90 ?m or less, and a sintered compact sputtering target obtained by sintering this powder. Further provided is a manufacturing method of Sb—Te alloy powder for a sintered compact sputtering target including the steps of dissolving an Sb—Te alloy, thereafter subjecting this to gas atomization to obtain atomized powder, and further subjecting this to mechanical pulverization in an inert atmosphere without any atmospheric exposure so as to manufacture powder having a maximum grain size of 90 ?m or less and reduced oxygen content. Thus, the Sb—Te alloy sputtering target structure can be uniformalized and refined, generation of cracks in the sintered target can be inhibited, and generation of arcing during sputtering can be inhibited.Type: GrantFiled: November 29, 2005Date of Patent: May 24, 2011Assignee: JX Nippon Mining & Metals CorporationInventor: Hideyuki Takahashi
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Patent number: 7946467Abstract: A braze material and processes for making and using the material, such as for use in the manufacturing, coating, repair, and build-up of superalloy components. The braze material is composed of particles with melt-modifying constituents that are limited to the surfaces of the particles, yet are capable of sufficiently promoting the heating of the particles by conventional means and microwave radiation to achieve at least partial melting of the particles. The melt-modifying constituents are in the form of particulates embedded in the outer surface region of each particle. The particulates are formed of melting point depressant(s) and/or microwave coupling enhancer(s), are much smaller than the particle in which they are embedded.Type: GrantFiled: December 15, 2006Date of Patent: May 24, 2011Assignee: General Electric CompanyInventor: Laurent Cretegny
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Publication number: 20110103994Abstract: A method of forming a metal alloy from a powder composition comprising first particles in a range of approximately 20-90% by weight of the powder composition, the remainder of the powder composition comprising approximately 95% by weight of second particles and 5% by weight of third particles, wherein the method includes the step of using rapid thermal processing (RTP) to sinter the powder composition.Type: ApplicationFiled: August 9, 2010Publication date: May 5, 2011Applicant: Automotive Parts and Accessory Systems R&D Centre LimitedInventors: June-Sang SIAK, Chan Hung Shek, Chi Yuen Chung, Wai-Lam Ralph Ip, Tik Lam Cheung
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Patent number: 7935168Abstract: 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: GrantFiled: August 13, 2008Date of Patent: May 3, 2011Assignee: E. I. du Pont de Nemours and CompanyInventor: Sarah Jane Mears
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Publication number: 20110071495Abstract: 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: ApplicationFiled: September 21, 2009Publication date: March 24, 2011Applicant: Cook IncorporatedInventor: Kurt J. Tekulve
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Publication number: 20110031001Abstract: A composite metal fine particle material is provided, in which spherical silver nanoparticles synthesized from a silver compound, a solvent, a reducing agent, and a dispersant, and conductive fillers compose of non-spherical metal fine particles, are mixed. For example, the conductive fillers composed of the non-spherical metal fine particles are formed into slender columnar shapes, plate shapes, or ellipsoidal shapes.Type: ApplicationFiled: February 8, 2010Publication date: February 10, 2011Applicant: HITACHI CABLE LTD.Inventors: Dai ISHIKAWA, Tomiya ABE, Masanobu ITO
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Publication number: 20110017017Abstract: CuInS2 nanoparticles have been prepared from single source precursors via microwave irradiation. Also, CuInGaS2 alloy nanoparticles have been prepared. Microwave irradiation methods have allowed an increase in the efficiency of preparation of these materials by providing increased uniformity of heating and shorter reaction times. Nanoparticle growth has been controlled in the about 1 to 5 nm size range by variation of thiolated capping ligand concentrations as well as reaction temperatures and times. Investigation of the photophysical properties of the colloidal nanoparticles has been performed using electronic absorption and luminescence emission spectroscopy. Qualitative nanoparticles sizes have been determined from the photoluminescence (PL) data and compared to TEM images.Type: ApplicationFiled: December 14, 2007Publication date: January 27, 2011Applicant: Idaho State UniversityInventors: Joshua J. Pak, Joseph S. Gardner, Endrit Shurdha, Rene G. Rodriguez, Lisa D. Lau
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Patent number: 7867315Abstract: The invention provides a hard-particle powder for sintered body, which contains, by mass %, 2% to 3.5% of Si, 6% to 10% of Cr, 20% to 35% of Mo, 0.01% to 0.5% of REM, and the remainder being Co and unavoidable impurities. The invention further provides a sintered body obtained through a mixing step of mixing the above-mentioned hard-particle powder for sintered body with a pure iron powder and a graphite powder to obtain a powder mixture, a forming step of compacting the powder mixture to obtain a compact, and a sintering step of sintering the compact. The hard-particle powder according to the invention has the effect of giving a sintered body having improved wear resistance without substantially impairing powder characteristics and sintering characteristics. Additionally, the sintered body according to the invention has the effect of having excellent wear resistance.Type: GrantFiled: December 19, 2008Date of Patent: January 11, 2011Assignee: Daido Tokushuko Kabushiki KaishaInventors: Tomomi Yamamoto, Seiji Kurata
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Patent number: 7857886Abstract: A metal alloy powder containing at least two alloying elements selected from the group of Ni, Cu, Cr, Sn, Mn, Co and W containing 1 to 99% by weight Ni, 1 to 99% by weight Cu, 6 to 60% by weight Cr, 6 to 15% by weight Sn, 6 to 15% by weight Mn, 6 to 15% by weight Co, and/or 6 to 15% by weight W for use in laminated ceramic capacitors with an internal electrode wherein said electrode comprises a sintered body of said alloy powder. A metal alloy powder containing at least two alloying elements selected from the group of Ni, Cu, Cr, Sn, Mn, Co and W wherein the onset of oxidation of the alloy powder occurs above about 250° C.Type: GrantFiled: September 10, 2007Date of Patent: December 28, 2010Assignee: Canadian Electronic Powders CorporationInventors: Cesur Celik, Serge Grenier
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Patent number: 7846232Abstract: A method of producing titanium metal from a titanium-containing material includes the steps of producing a solution of M?TiF6 from the titanium-containing material, selectively precipitating M?2TiF6 from the solution by the addition of (M?)aXb and using the selectively precipitated M?2TiF6 to produce titanium. M? is a cation of the type which forms a hexafluorotitanate, M? is selected from ammonium and the alkali metal cations, X is an anion selected from halide, sulphate, nitrite, acetate and nitrate and a and b are 1 or 2.Type: GrantFiled: December 8, 2009Date of Patent: December 7, 2010Assignee: Adams & AdamsInventor: Gerard Pretorius
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Patent number: 7824463Abstract: Process for the production of valve metal powders, in particular niobium and tantalum powder, by reduction of corresponding valve metal oxide powders by means of vaporous reducing metals and/or hydrides thereof, preferably in the presence of an inert carrier gas, wherein the reduction is performed at a vapor partial pressure of the reducing metal/metal hydride of 5 to 110 hPa and an overall pressure of less than 1000 hPa, and tantalum powder obtainable in this way having a high stability of the powder agglomerate particles.Type: GrantFiled: April 9, 2005Date of Patent: November 2, 2010Assignees: H. C. Starck GmbH, H.C. Starck Ltd.Inventors: Helmut Haas, Ulrich Bartmann, Tadashi Komeya, Nobuyuki Sato
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Publication number: 20100247956Abstract: Zn alloy particles for high corrosion resistance rust prevention paint containing, by mass %, Mg: 0.01 to 30% and having a balance of Zn and unavoidable impurities, having physical fracture facets and/or cracks of a length of 0.01 ?m or more or cracks of a depth of 0.01 ?m or more, having an average particle size of 0.05 to 200 ?m, and having an aspect ratio of maximum size and minimum size (maximum size/minimum size) of an average value of 1 to 1.5. Also, a high corrosion resistance rust prevention paint containing these Zn alloy particles and a high corrosion resistance steel material and steel structure coated with that paint.Type: ApplicationFiled: September 7, 2007Publication date: September 30, 2010Inventors: Kenji Katoh, Makoto Nagasawa, Minoru Ito, Michio Kaneko, Shiro Imai, Masatoshi Kominami, Toshiro Terakawa, Takashi Kumai
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Patent number: 7799408Abstract: The present invention provides an Ag or Ni conductive powder, which can show the high conductivity even in condition that a resin is included and can has the narrow particle size distribution, and a conductive composition using the same, and a producing method of the same. In such an Ag or Ni conductive powder, a conductive composition and a producing method of the conductive powder, the conductive powder having a convex radially extended and a concave, wherein a core material which is at least one particle selected from the group consisting of an organic type particle, a metal type particle and a ceramic type particle is included into the conductive powder.Type: GrantFiled: April 26, 2006Date of Patent: September 21, 2010Assignee: Kaken Tech Co. Ltd.Inventors: Shigeo Hori, Hirohiko Furui, Tadashi Kubota, Yoshiaki Kubota
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Publication number: 20100233014Abstract: 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: ApplicationFiled: July 10, 2008Publication date: September 16, 2010Applicant: HOGANAS AB (PUBL)Inventor: Mats Larsson
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Patent number: 7785390Abstract: Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles are larger than a size +100 standard Tyler mesh sieve. A method for producing molybdenum metal powder includes providing a supply of ammonium molybdate and a reducing gas; causing an exothermic reaction between the ammonium molybdate and the reducing gas at a first temperature to produce an intermediate reaction product and a supplemental reducing gas; causing an endothermic reaction between the intermediate reaction product and the reducing gas at a final temperature to produce the molybdenum metal powder.Type: GrantFiled: August 14, 2007Date of Patent: August 31, 2010Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson
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Patent number: 7785391Abstract: Dendritic metal nanostructures made using a surfactant structure template, a metal salt, and electron donor species.Type: GrantFiled: August 16, 2007Date of Patent: August 31, 2010Assignee: Sandia CorporationInventors: John A. Shelnutt, Yujiang Song, Eulalia F. Pereira, Craig J. Medforth
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Publication number: 20100215983Abstract: The present invention discloses abrasion resistant claddings for cast iron substrates comprising hard particles and nickel-based braze alloys. The cladding material can be brazed on cast iron substrates at lower temperatures than conventional cladding materials, providing highly increased abrasion resistance to the cast iron substrate materials without adversely affecting the physical properties and structural integrity of such substrates.Type: ApplicationFiled: February 20, 2009Publication date: August 26, 2010Applicant: Kennametal Inc.Inventors: Vaishalibahen Bhagwanbhai Patel, James Aaron Faust