Including Comminution Patents (Class 75/354)
  • Patent number: 10185683
    Abstract: A bus interface system is disclosed that includes a master bus controller and a slave bus controller that are coupled by a bus line. The slave bus controller includes a decoder that allows for data to be transmitted along just the bus line. The decoder includes an oscillator, a first counter, and a comparison circuit. The oscillator is configured to be enabled by data pulses defined by the input data signal and generate oscillation pulses while enabled. The first counts the oscillation pulses and indicates a number of the oscillation pulses generated during a time slot. The comparison circuit is configured to this number with a reference number and generate a data output that represents a first logical value in response to the number being greater than the reference parameter and represents a second logical value in response to the number being less than the reference parameter.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: January 22, 2019
    Assignee: Qorvo US, Inc.
    Inventors: Christopher Truong Ngo, Alexander Wayne Hietala, Christian Rye Iversen, Ruediger Bauder
  • Patent number: 10030450
    Abstract: A polycrystalline compact comprises a plurality of diamond grains of micron size, submicron size, or both, and a plurality of crushed diamond nanoparticles disposed in interstitial spaces between the plurality of diamond grains. A method of forming a polycrystalline compact comprises combining a plurality of micron and/or submicron-sized diamond grains and a plurality of crushed diamond nanoparticles to form a mixture and sintering the mixture in a presence of a binder to form a polycrystalline hard material comprising a plurality of inter-bonded diamond grains and diamond nanoparticles. Cutting elements comprising a polycrystalline compact and earth-boring tools bearing such compacts are also disclosed.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: July 24, 2018
    Assignee: Baker Hughes Incorporated
    Inventor: Anthony A. DiGiovanni
  • Patent number: 9068250
    Abstract: A high-strength, pre-coated, titanium or titanium-alloy material component is provided that includes a titanium or titanium-alloy material article having ultra-fine, submicron grain size microstructure and an organic coating of phenolic resin applied to the surface of the article. The article is prepared from a coarse grain titanium or titanium-alloy powder material that is cryomilled into an ultra-fine, submicron grain material, degassed, and densified. The densified material is formed or otherwise processed into a article, and pre-coated with an organic coating containing phenolic resin prior to installation or assembly.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 30, 2015
    Assignee: The Boeing Company
    Inventor: Steven G. Keener
  • Publication number: 20150099118
    Abstract: Electrodes for metal-air batteries and the metal-air batteries employing such electrodes are provided. The electrodes include metal nanoparticles synthesized via a novel route. The nanoparticle synthesis is facile and reproducible, and provides metal nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles thus may have superior capability. Electrochemical cells employing said electrodes are also provided.
    Type: Application
    Filed: June 17, 2014
    Publication date: April 9, 2015
    Inventors: Fuminori Mizuno, Michael Paul Rowe, Ryan Daniel Desautels
  • Publication number: 20150099183
    Abstract: Electrodes employing as active material metal nanoparticles synthesized by a novel route are provided. The nanoparticle synthesis is facile and reproducible, and provides metal nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles thus may have superior capability. Electrochemical cells employing said electrodes are also provided.
    Type: Application
    Filed: March 19, 2014
    Publication date: April 9, 2015
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Nikhilendra Singh, Michael Paul Rowe
  • Publication number: 20150096887
    Abstract: Electrodes employing as active material iridium nanoparticles synthesized by a novel route are provided. The nanoparticle synthesis is facile and reproducible, and provides iridium nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles have excellent efficiency catalyzing the electrolytic production of oxygen from water.
    Type: Application
    Filed: July 10, 2014
    Publication date: April 9, 2015
    Inventors: Kenneth J. McDonald, Michael Paul Rowe
  • Patent number: 8979972
    Abstract: Disclosed herein is a method of manufacturing a metal flake, including the steps of: applying metal ink containing an organic metal compound onto a substrate; calcining the metal ink applied on the substrate to form a thin metal film; separating the formed thin metal film from the substrate; and pulverizing the separated thin metal film. The method of manufacturing a metal flake is characterized in that the thickness and size of metal flakes can be easily adjusted, metal flakes having excellent conductivity and gloss can be obtained, and metal flakes can be mass-produced using environmentally friendly and economical methods.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: March 17, 2015
    Assignee: Inktec Co., Ltd.
    Inventors: Kwang Choon Chung, Hyun Nam Cho, Dong Rip Kim, Ji Hoon Yoo
  • Publication number: 20150000469
    Abstract: There are provided a method and an apparatus for manufacturing a metal nanopowder having a uniform particle size distribution by uniformly applying current to a center portion of the metal wire and a surface portion thereof. The method includes increasing a surface roughness of a metal wire; supplying the metal wire having the increased surface roughness to an electrode in a reaction chamber; and wire-exploding the metal wire by supplying electrical energy to the electrode.
    Type: Application
    Filed: September 17, 2013
    Publication date: January 1, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Ho LEE, Kwan LEE, Jung Wook SEO
  • Patent number: 8911529
    Abstract: Low cost spherical titanium and titanium powder alloy powder is produced by impinging a stream of an inert gas, such as argon, on the surface of a molten pool of titanium or sponge and alloying elements.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 16, 2014
    Assignee: Materials & Electrochemical Research Corp.
    Inventors: James C. Withers, Raouf O. Loutfy
  • Publication number: 20140202286
    Abstract: A metal powder production method and a metal powder production device capable of reducing the size of the device, reducing costs, and obtaining spherical metal powder are provided. Supply means supplies a downward flow of molten metal, and a plurality of jet burners emit flame jets to the downward flow of the molten metal supplied from the supply means. Each of the jet burners is provided to emit the flame jet from the same angle and from each of positions rotationally symmetrical with each other with respect to the downward flow of the molten metal.
    Type: Application
    Filed: May 18, 2012
    Publication date: July 24, 2014
    Applicants: HARD INDUSTRY YUGEN KAISHA, TOHOKU TECHNO ARCH CO., LTD.
    Inventors: Yoshihiko Yokoyama, Takuichi Yamagata, Torao Yamagata
  • Patent number: 8734714
    Abstract: The present invention discloses a method for recovering rare earth particulate material from an assembly comprising a rare earth magnet and comprises the steps of exposing the assembly to hydrogen gas to effect hydrogen decrepitation of the rare earth magnet to produce a rare earth particulate material, and separating the rare earth particulate material from the rest of the assembly. The invention also resides in an apparatus for separating rare earth particulate material from an assembly comprising a rare earth magnet. The apparatus comprises a reaction vessel having an opening which can be closed to form a gas-tight seal, a separation means for separating the rare earth particulate material from the assembly, and a collection means for collecting the rare earth particulate material. The reaction vessel is connected to a vacuum pump and a gas control system, and the gas control system controls the supply of hydrogen gas to the reaction vessel.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: May 27, 2014
    Assignee: The University of Birmingham
    Inventors: Ivor Rex Harris, Andrew Williams, Allan Walton, John Speight
  • Patent number: 8702836
    Abstract: The invention relates to a method of forming solid particles from a sample, which includes the step of exposing the sample to a focused acoustic field having an acoustic wave variable, until the solid particles achieve a desired state of particularization. The acoustic wave variable may be selected based, at least in part, on the desired state of particularization. The sample may be exposed to the focused acoustic field through a medium.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: April 22, 2014
    Assignee: Covaris, Inc.
    Inventors: James A. Laugharn, Jr., Edwin Rudd
  • Patent number: 8657915
    Abstract: The present invention provides a metal powder composed of tantalum or niobium that achieves both sinterability and fluidity and the manufacturing method thereof. The present invention also provides a tantalum or niobium powder that enables the manufacturing of an anode for a solid electrolytic capacitor in which holes are formed for a conductive polymer-containing solution to pass through, without using a hole molding material or pore forming material. Furthermore, the present invention provides an anode for a solid electrolytic capacitor that enables the manufacturing of a high-volume and low ESR solid electrolytic capacitor. The present invention further provides a manufacturing method of a metal powder that allows the manufacturing of a metal powder of a given diameter range from a raw powder at high yield, without requiring a lot of work and time.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 25, 2014
    Assignee: Global Advanced Metals Japan, K.K.
    Inventors: Yujiro Mizusaki, Isao Sugiyama, Hitoshi Iijima, Osamu Kubota
  • Publication number: 20130313309
    Abstract: A conductive bonding material includes: a solder component including a metal foamed body of a first metal having at least one pore, the pore absorbs melted first metal when the metal foamed body is heated at a temperature higher than the melting point of the first metal, and a second metal having a melting point lower than the melting point of the first metal.
    Type: Application
    Filed: March 28, 2013
    Publication date: November 28, 2013
    Inventors: Masayuki KITAJIMA, Takatoyo YAMAKAMI, Takashi KUBOTA, Kuniko ISHIKAWA
  • Patent number: 8545596
    Abstract: 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: Grant
    Filed: November 29, 2011
    Date of Patent: October 1, 2013
    Assignee: Umicore
    Inventors: Christophe Henninot, Yvan Strauven
  • Publication number: 20130209308
    Abstract: A method of making a nanoscale metallic powder is disclosed. The method includes providing a base material comprising a metallic compound, wherein the base material is configured for chemical reduction by a reductant to form a metallic material. The method also includes forming a powder of the base material, the powder comprising a plurality of powder particles, the powder particles having an average particle size that is less than about 1 micron. The method further includes disposing the powder particles into a reactor together with the reductant under an environmental condition that promotes the chemical reduction of the base material and formation of a plurality of particles of the metallic material.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 15, 2013
    Applicant: Baker Hughes Incorporated
    Inventors: Oleg A. Mazyar, Michael H. Johnson, David Ernest Rodrigues
  • Publication number: 20120291593
    Abstract: The present invention relates to the tantalum powder and the process for preparing the same, and also relates to the electrolytic capacitor anode made of the tantalum powder. More particularly, the present invention relates to the tantalum powder having a BET surface area not more than 0.530 m2/g, Fisher mean particle size not less than 3.00 ?m. The present invention relates to the process for preparing the tantalum powder, wherein the tantalum powder is prepared through reducing tantalum compound with a reducing agent, wherein the tantalum powder as seed is added during reduction, and said tantalum powder as seed is the tantalum powder that has been milled.
    Type: Application
    Filed: August 2, 2012
    Publication date: November 22, 2012
    Inventors: Guoqi Yang, Wenfeng Shi, Xifang Bao, Yong Li, Zhongxiang Li, Zhangong Dong, Xiaoyan Yang
  • Patent number: 8273149
    Abstract: The present invention provides a nanowire production method that is simpler than conventional nanowire production methods, and that makes it easier to control the size and shape of the nanowires by using a technique completely different from the conventional ones. A powder particle containing a metal element is divided into nanometer-size wires containing the metal element by irradiating a suspension of the powder particles with a femtosecond laser. The present invention also makes it possible to divide the nanometer-size wires thus formed into nanometer-size particles containing the metal element by irradiating further the nanometer-size wires with the femtosecond laser.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: September 25, 2012
    Assignee: Kyoto University
    Inventors: Yasuhiko Shimotsuma, Kiyotaka Miura, Kazuyuki Hirao, Mitsuo Kawasaki, Osamu Kajita, Takafumi Iwamoto, Eitaro Yasuda, Shigeyuki Kimura
  • Patent number: 8257464
    Abstract: The present invention relates to pulverulent materials suitable for storing hydrogen, and more particularly to a method of preparing such a material, in which: (A) a composite metallic material having a specific granular structure is prepared by co-melting the following mixtures: a first metallic mixture (m1), which is an alloy (a1) of body-centered cubic crystal structure, based on titanium, vanadium, chromium and/or manganese, or a mixture of these metals in the proportions of the alloy (a1); and a second mixture (m2), which is an alloy (a2), comprising 38 to 42% zirconium, niobium, molybdenum, hafnium, tantalum and/or tungsten and 56 to 60 mol % of nickel and/or copper, or else a mixture of these metals in the proportions of the alloy (a2), with a mass ratio (m2)/(m1+m2) ranging from 0.1 wt % to 20 wt %; and (B) the composite metallic material thus obtained is hydrogenated, whereby the composite material is fragmented (hydrogen decrepitation).
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: September 4, 2012
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Jean Charbonnier, Patricia De Rango, Daniel Fruchart, Salvatore Miraglia, Sophie Rivoirard, Natalia Skryabina
  • Publication number: 20120111148
    Abstract: In certain embodiments, a material comprising one or more semiconductive substances is vaporized to generate a vapor phase condensate. The vapor phase condensate is allowed to form nanoparticles. The nanoparticles are annealed to yield substantially spherical nanoparticles.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 10, 2012
    Applicant: Raytheon Company
    Inventor: Kalin Spariosu
  • Publication number: 20120103134
    Abstract: It is described a manganese pellet production from non-calcinated manganese ore, comprising the following phases: (a) ore size preparation through ore classification by function of particle size, smaller or equal to 1 mm particles being maintained from the ore particle fraction process so as to have a smaller or equal to 1 mm size, as well as the comminution of these particles; (b) flux addition; (c) agglomerant addition; (d) pelletizing resulting in crude pellets; and (e) thermal processing through crude pellet drying, pre-heating and heating.
    Type: Application
    Filed: July 27, 2009
    Publication date: May 3, 2012
    Applicant: VALE S.A.
    Inventors: Washington Luiz Mafra, João Batista Conti de Souza
  • Publication number: 20120096989
    Abstract: 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: Application
    Filed: November 29, 2011
    Publication date: April 26, 2012
    Applicant: UMICORE
    Inventors: Christophe HENNINOT, Yvan STRAUVEN
  • Patent number: 8118906
    Abstract: A method of recycling ruthenium (Ru) and Ru-based alloys comprises steps of: providing a solid body of Ru or a Ru-based alloy; segmenting the body to form a particulate material; removing contaminants, including Fe, from the particulate material; reducing the sizes of the particulate material to form a powder material; removing contaminants, including Fe, from the powder material; reducing oxygen content of the powder material to below a predetermined level to form a purified powder material; and removing particles greater than a predetermined size from the purified powder material. The purified powder material may be utilized for forming deposition sources, e.g., sputtering targets.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: February 21, 2012
    Assignee: Heraeus Inc.
    Inventors: Wuwen Yi, William Heckman, Bernd Kunkel, Carl Derrington, Patrick Griffin
  • Patent number: 8101006
    Abstract: A centrifugal impact atomization process for producing zinc or zinc alloy powder from molten zinc. A stream of molten zinc is injected onto the surface of a spinning disk contained within an atomization chamber. The disk has a cup shaped cavity having an open end, opposing closed end and integral side walls. The disk may have baffles protruding into the open cavity core within the disk. The baffles may have straight or curved side surfaces. The disk is rotated at high speeds between about 10,000 and 15,000 rpm (revolutions per minute). The oxygen content in the chamber is preferably between about 1 and 6 vol %. Zinc powder is produced having more smaller size particles. Zinc alkaline cells utilizing such zinc product as anode active material show improved performance, especially as power source in high discharge services such as digital cameras.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: January 24, 2012
    Assignee: The Gillette Company
    Inventors: Michael J. Zuraw, Peter B. Harris
  • Patent number: 8088193
    Abstract: A method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and rubbing the metal element to make nanoparticles. Another method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and applying sonic energy to at least one of the metal element and solution. A further method for making copper nanoparticles includes the step of adding ascorbic acid to a copper salt solution.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: January 3, 2012
    Inventors: Taofang Zeng, Chunwei Wu
  • Publication number: 20110283835
    Abstract: A metal powder manufacturing device for manufacturing a metal powder includes a feed for supplying a molten metal, a fluid spout unit, and a course modification unit. The fluid spout unit further includes a channel and an orifice. The channel is provided below the feed, allowing passing of the molten metal supplied from the feed. The orifice is opened at a bottom end of the channel, spouting a fluid into the channel. The above course modification unit is provided below the fluid spout unit, and forcibly changes the traveling direction of a dispersion liquid. This dispersion liquid is composed of multiple fine droplets dispersed into the fluid. The above droplets are a resultant of a breakup caused by a contact between the molten metal and the fluid ejected from the orifice. Here, the dispersion liquid is transported so that the droplets is cooled and solidified in the dispersion liquid in order to manufacture the metal powder.
    Type: Application
    Filed: August 3, 2011
    Publication date: November 24, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Atsushi WATANABE
  • Patent number: 8034156
    Abstract: A method for producing a decomposer of an organic halogenated compound comprises subjecting an iron powder produced beforehand to plastic deformation that gives the iron powder particles a flat shape. Further, an iron powder and a copper salt powder are mechanically mixed in a ball mill to produce a copper salt-containing iron particle powder in which the particles of the two powders are joined. In this case, the method for producing the decomposer of an organic halogenated compound is characterized in that the iron powder is mechanically deformed to give the particles a flat shape.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: October 11, 2011
    Assignee: Dowa Eco-System Co., Ltd.
    Inventors: Masami Kamada, Taishi Uehara
  • Publication number: 20110233480
    Abstract: There is provided a producing method of metal fine particles or metal oxide fine particles for producing metal fine particles or metal oxide fine particles by atomizing raw materials by performing processes including an oxidizing process and a reducing process to the raw materials composed of metal or a metal compound.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Applicants: HITACHI CABLE, LTD., TOHOKU UNIVERSITY
    Inventors: Yamato HAYASHI, Yoshihiro SEKIGUCHI, Hirotsugu TAKIZAWA, Dai ISHIKAWA, Tomiya ABE
  • Publication number: 20110011207
    Abstract: 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: Application
    Filed: September 28, 2010
    Publication date: January 20, 2011
    Inventor: Victor Blakemore Slaughter
  • Patent number: 7871537
    Abstract: A method for fabricating a magnesium-based hydrogen storage material according to the present invention comprises a) forming a mixture of a magnesium hydride powder and a transition metal halide powder, b) adding the mixture and balls into a vessel, c) filling the vessel with an inert gas or hydrogen, and d) subjecting the mixture to high energy ball milling.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 18, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae-Hyeok Shim, Seon-Ah Jin, Young-Whan Cho
  • Publication number: 20100294079
    Abstract: The present invention provides a method and facility for preventing crumbling and powderization of green pellets when producing high strength green pellets using a powder feedstock and using the pellets in a rotary hearth reducing furnace and for efficiently reducing the same. It comprises kneading by a kneader 5 a feedstock of a powder of a fine particle size (20 to 80 wt % having size of not more than 10 ?m) including a metal oxide and carbon-bearing powder fed from a feed storage tank 1 and producing green pellets by a pan type pelletizer 7. The green pellets are screened by a pellet screen 9, then dried by a pellet dryer 11 and reduced by firing in a rotary hearth reducing furnace 13. At that time, the green pellets are continuously conveyed to prevent crumbling.
    Type: Application
    Filed: July 29, 2010
    Publication date: November 25, 2010
    Applicant: Nippon Steel Corporation
    Inventors: Tetuharu Ibaraki, Hiroshi Oda, Shoji Imura, Masaharu Takahashi
  • Patent number: 7829014
    Abstract: The invention is a high-strength, pre-coated, titanium or titanium-alloy material component comprising a titanium or titanium-alloy material article having ultra-fine, submicron grain size microstructure and an organic coating of phenolic resin applied to the surface of the article. The article is prepared from a coarse grain titanium or titanium-alloy powder material that is cryomilled into an ultra-fine, submicron grain material, degassed, and densified. The densified material is formed or otherwise processed into a article, and pre-coated with an organic coating containing phenolic resin prior to installation or assembly.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: November 9, 2010
    Assignee: The Boeing Company
    Inventor: Steven G. Keener
  • Publication number: 20100272888
    Abstract: In a method for producing a starting material (M, N, N?) for the production of a wear layer (420), a coating (40) with a composition which corresponds to that of the wear layer (420) which is to be produced is chemically undissolved from its substrate (30) and is detached as a solid body, and that the starting material (M, N, N?) is formed by the layer material (60) of the detached coating (40).
    Type: Application
    Filed: July 9, 2007
    Publication date: October 28, 2010
    Inventors: Rene Jabado, Jens Dahl Jensen, Ursus Krüger, Daniel Körtvelyessy, Volkmar Lüthen, Ralph Reiche, Michael Rindler, Raymond Ullrich
  • Publication number: 20100263766
    Abstract: A method according to one embodiment includes combining an amorphous iron-based alloy and at least one metal selected from a group consisting of molybdenum, chromium, tungsten, boron, gadolinium, nickel phosphorous, yttrium, and alloys thereof to form a mixture, wherein the at least one metal is present in the mixture from about 5 atomic percent (at %) to about 55 at %; and ball milling the mixture at least until an amorphous alloy of the iron-based alloy and the at least one metal is formed.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 21, 2010
    Inventors: Cheng Kiong Saw, William A. Bauer, Jor-Shan Choi, Sumner Daniel Day, Joseph C. Farmer
  • Publication number: 20100226070
    Abstract: The present invention relates to the tantalum powder and the process for preparing the same, and also relates to the electrolytic capacitor anode made of the tantalum powder. More particularly, the present invention relates to the tantalum powder having a BET surface area not more than 0.530 m2/g, Fisher mean particle size not less than 3.00 ?m. The present invention relates to the process for preparing the tantalum powder, wherein the tantalum powder is prepared through reducing tantalum compound with a reducing agent, wherein the tantalum powder as seed is added during reduction, and said tantalum powder as seed is the tantalum powder that has been milled.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 9, 2010
    Inventors: Guoqi Yang, Wenfeng Shi, Xifang Bao, Yong Li, Zhongxiang Li, Zhangong Dong, Xiaoyan Yang
  • Publication number: 20100167078
    Abstract: Disclosed are a method for fabricating nanopowders, nano ink containing the nanopowders and micro rods, and nanopowders containing nanoparticles, nano clusters or mixture thereof, milled from nano fiber composed of at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, nano ink containing the nanopowders and microrods, the method comprising spinning a spinning solution containing at least one kind of precursor capable of composing at least one kind selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, crystallizing or amorphizing the spun precursor to produce nano fiber containing at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, and milling the nano fiber to fabricate nanopowders containing nanoparticles, nano clusters or
    Type: Application
    Filed: December 23, 2009
    Publication date: July 1, 2010
    Inventors: Il Doo KIM, Seung hun CHOI
  • Patent number: 7601198
    Abstract: Ammonium hexachlororuthenate is produced by adding ammonium chloride to a hydrochloric acid solution containing ruthenium. The ammonium hexachlororuthenate is baked to obtain the ruthenium powder. When the moisture content of the ammonium hexachlororuthenate is high, the baked product is so hard sintered product that its pulverization is not easy. In accordance with the present invention, the following steps are carried out. Hydrochloric acid solution containing ruthenium is held at a temperature of 80 to 95° C. for three hours or longer. The ammonium chloride is then added to the hydrochloric acid solution which is stirred by a stirring mill at the rotation of 200 revolutions per minute or more. The hydrochloric acid solution is held at a temperature of from 85 to 95° C. for 1 hour while being stirred at 200 rpm. The resultant precipitate of ammonium hexachlororuthenate is filtered. The inventive crystals of precipitated ammonium hexachlororuthenate has 10 mass % or less of moisture content.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: October 13, 2009
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Hifumi Nagai, Yuji Kawano
  • Publication number: 20090193935
    Abstract: The present invention relates to the a method for manufacturing high strength ultra-fine/nano-structured aluminum/aluminum nitride or aluminum alloy/aluminum nitride composites using mechanical milling or mechanical alloying process which is conducted in the nitride-forming atmosphere such as nitrogen gas (N), ammonia gas (NH) or mixed gas including both gases, subsequent heat treatment process, and hot consolidation process. Also, high strength ultra-fine/nano-structured Al/ALN or Al alloy/ALN composite materials fabricated by the method of present invention have superior mechanical strength and heat resistance to those fabricated by conventional powder metallurgy process or liquid processes.
    Type: Application
    Filed: May 30, 2006
    Publication date: August 6, 2009
    Applicant: Dynamaterials Co., Inc.
    Inventors: Kwang Seon Shin, Seung Hoon Yu
  • Patent number: 7531022
    Abstract: A liquid for the preparation of powder mixtures on the basis of hard metals, comprising water and an inhibitor, wherein the inhibitor is in the form of at least one of the following materials: polyvinyllactam or wax emulsion, or the inhibitor is in the form of at least one of the following materials: carboxylic acid, amines or their derivatives.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: May 12, 2009
    Assignee: Zschimmer & Schwarz GmbH & Co. KG Chemische Fabriken
    Inventors: Peter Quirmbach, Michael Hölzgen, Alfred Vuin
  • Patent number: 7524355
    Abstract: A method is disclosed for producing an energetic metastable nano-composite material. Under pre-selected milling conditions a mixture of powdered components are reactively milled. These components will spontaneously react at a known duration of the pre-selected milling conditions. The milling is stopped at a time at which the components have been compositionally homogenized to produce nanocomposite powder, but prior to said known duration, and thereby before the spontaneous reaction occurs. The milled powder is recovered as a highly reactive nanostructured composite for subsequent use by controllably initiating destabilization thereof.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 28, 2009
    Assignee: New Jersey Institute of Technology
    Inventors: Edward Leonid Dreizin, Mirko Schoenitz
  • Publication number: 20090080145
    Abstract: The present invention provides a metal powder composed of tantalum or niobium that achieves both sinterability and fluidity and the manufacturing method thereof. The present invention also provides a tantalum or niobium powder that enables the manufacturing of an anode for a solid electrolytic capacitor in which holes are formed for a conductive polymer-containing solution to pass through, without using a hole molding material or pore forming material. Furthermore, the present invention provides an anode for a solid electrolytic capacitor that enables the manufacturing of a high-volume and low ESR solid electrolytic capacitor. The present invention further provides a manufacturing method of a metal powder that allows the manufacturing of a metal powder of a given diameter range from a raw powder at high yield, without requiring a lot of work and time.
    Type: Application
    Filed: May 31, 2006
    Publication date: March 26, 2009
    Inventors: Yujiro Mizusaki, Isao Sugiyama, Hitoshi Iijima, Osamu Kubota
  • Publication number: 20090074607
    Abstract: The present invention is directed to flotation of refractory gold sulfide ores in which the ore is ground, floated, the tailings reground, and refloated to produce gold-bearing concentrates.
    Type: Application
    Filed: September 11, 2008
    Publication date: March 19, 2009
    Applicant: BARRICK GOLD CORPORATION
    Inventors: Daniel Hillier, Barun Gorain, Jacques McMullen
  • Publication number: 20090068488
    Abstract: An object of the present invention is to provide a method for producing granulated metallic iron superior in rust resistance. Another object of the present invention is to provide a method for producing such granulated metallic iron. In the method, the granulated metallic iron is produced by agglomerating a material mixture including an iron-oxide-containing material and a carbonaceous reducing agent; charging and heating the agglomerated material mixture in a moving hearth-type reducing furnace to reduce the iron oxide in the material mixture with the carbonaceous reducing agent to obtain hot granulated metallic iron; and cooling the hot granulated metallic iron, wherein the hot granulated metallic iron is cooled while its relative position is changed; and an oxide coating is formed on the surface of the hot granulated metallic iron by bringing moisture into contact with almost the entire surface of the hot granulated metallic iron.
    Type: Application
    Filed: March 24, 2006
    Publication date: March 12, 2009
    Applicant: Mesabi Nugget LLC
    Inventors: Koji Tokuda, Osamu Tsuge
  • Publication number: 20090025841
    Abstract: Surface-modified metal fuels, which improve the stability in storage of pyrotechnics and methods for manufacturing such fuels, are provided. Improved storage stability is conferred either by alloying the precursor metal prior to the powder production process, or by forming an enhanced stability coating on the surface of the metal powders during the powder production process.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 29, 2009
    Inventor: Paul Smith
  • Publication number: 20080307925
    Abstract: This invention relates to a method for producing titanium by reaction of titanium tetrachloride with magnesium in a reactor, wherein the temperature in the reactor is above the melting point of magnesium and below the melting point of magnesium chloride, wherein the reaction results in formation of particles comprising titanium, and wherein the particles are removed from the reactor and processed in order to recover the titanium.
    Type: Application
    Filed: October 14, 2005
    Publication date: December 18, 2008
    Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH OR ORGANIZATION
    Inventors: Grant Ashley Wellwood, Christian Doblin
  • Patent number: 7459007
    Abstract: The present invention provides a metallic composition, which includes a plurality of ultra-fine copper flakes having at least one desirable feature, such as oxidation resistance and excellent dispersibility in a non-aqueous system. Also provided is a method for forming compositions having a plurality of ultra-fine copper flakes, and the metallic composition produced therewith.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: December 2, 2008
    Assignee: Clarkson University
    Inventors: Dan V. Goia, Corina Goia
  • Publication number: 20080264205
    Abstract: A method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and rubbing the metal element to make nanoparticles. Another method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and applying sonic energy to at least one of the metal element and solution. A further method for making copper nanoparticles includes the step of adding ascorbic acid to a copper salt solution.
    Type: Application
    Filed: December 17, 2007
    Publication date: October 30, 2008
    Inventors: Taofang ZENG, Chunwei Wu
  • Publication number: 20080233420
    Abstract: The present invention relates to a high-purity tantalum flake powder, produced by a hydride-dehydride process including: (a) cold working tantalum metal into a thin sheet; (b) hydriding the thin sheet, forming a brittle tantalum foil; (c) adjusting the tantalum foil to a desired particle size; and (d) removing hydrogen from the tantalum foil by vacuum sintering, forming a tantalum flake powder. In accordance with the present invention, tantalum flake is produced by sizing ultra-thin tantalum foil via the hydride-dehydride process. Tantalum is an extremely malleable metal and can be cold worked into extremely thin sheets less than 1 micron thick. Once hydrided, this foil is brittle, and can be easily sized by suitable milling processes. The hydrogen is removed by vacuum sintering, resulting in an extremely thin Ta metal flake.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 25, 2008
    Inventors: Colin G. McCracken, Scott M. Hawkins
  • Patent number: 7407526
    Abstract: The invention concerns an iron powder for fortifying foodstuff. The powder consists of a reduced iron powder having irregularly shaped particles, wherein the iron powder has a ratio AD:PD less than 0.3, wherein AD is the apparent density in g/cm3, and PD is the particle density in g/cm3. The specific surface area of the powder particles is above 300 m2/kg as measured by the BET method and the average particle size is between 5-45 ?m.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: August 5, 2008
    Assignee: Höganäs AB
    Inventors: Bo Hu, Fredrik Eklund, Nils Jonsson, Fredrik Persson
  • Patent number: 7361204
    Abstract: Methods, systems and apparatus for producing a variable, known number of nanoparticles of various materials in an expanding mist in a vacuum or enclosure. The configurations allow for this mist of small particles to be produced in bursts, at repetition rates over a wide range of frequencies. The technique produces an isotropically expanding mist of particles. Direct applications of the invention can be used for the development of high power short wavelength incoherent light sources for applications in EUV lithography (EUVL), advanced microscopy, precision metrology, and other fields.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: April 22, 2008
    Assignee: Research Foundation of the University of Central Florida
    Inventors: Martin Richardson, Chiew-Seng Koay, Kazutoshi Takenoshita