Continuous Interengaged Phases Of Plural Metals, Or Oriented Fiber Containing Patents (Class 428/567)
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Patent number: 10407572Abstract: The invention relates to aluminum pigments which are at least partially coated with lubricant, wherein the aluminum pigments have a relative breadth of thickness distribution ?h of from 30% to less than 70%, as determined by a scanning electron microscope thickness count and as calculated on the basis of the corresponding cumulative breakthrough curve of the relative frequencies of occurrence, according to the formula ?h=100×(h90?h10)/h50, and an X-ray diffractogram, measured on pigments in substantially plane-parallel orientation, having one or two main peaks which do not correspond to the [111] reflexes. The invention further relates to a method for the production of said aluminum pigments and to uses thereof and also to nail varnishes and printing inks containing said aluminum pigments of the invention.Type: GrantFiled: December 21, 2007Date of Patent: September 10, 2019Assignee: ECKART GMBHInventors: Stefan Trummer, Michael Becker, Thomas Schlegl
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Patent number: 9943918Abstract: A heterogeneous composite consisting of near-nano ceramic clusters dispersed within a ductile matrix. The composite is formed through the high temperature compaction of a starting powder consisting of a core of ceramic nanoparticles held together with metallic binder. This core is clad with a ductile metal such that when the final powder is consolidated, the ductile metal forms a tough, near-zero contiguity matrix. The material is consolidated using any means that will maintain its heterogeneous structure.Type: GrantFiled: May 15, 2015Date of Patent: April 17, 2018Assignee: Powdermet, Inc.Inventors: Mark Grogan, Brian Doud, Andrew Sherman
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Patent number: 9657993Abstract: Described are solid agglomerates of fine metal particles and methods for manufacturing same. A liquid oily lubricant is used in the manufacture of the solid agglomerates. The manufacturing comprises blending fine metal particles with the liquid oily lubricant and compacting the oily metallic mixture obtained to desired solid form. Advantageously, the solid agglomerates possess a desirable density, a suitable resistance to crumbling and dusting during handling, and they can resist to high temperature and to humidity. Solid agglomerated metal products, according to the invention, may be useful for different purposes such as quality charge material for steel plants, blast furnaces and foundries.Type: GrantFiled: February 20, 2015Date of Patent: May 23, 2017Assignee: GESTION MCMARLAND INC.Inventors: Michel Beaudoin, Raymond Bernier, Martin Gagne, Marie-Josee Robichaud
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Patent number: 8790472Abstract: [Problems] A conventional process for producing a solder preform in which a predetermined amount of high-melting metal particles are directly put into molten solder and stirred, requires a long time for dispersing the high-melting metal particles by stirring. Therefore, in the conventional method for producing a solder preform, dissolution of the high-melting metal particles into the molten solder occurred during stirring, and their particle diameters became small. If a semiconductor chip and a substrate are soldered with a solder preform containing metal particles having such decreased diameters, the space between portions being soldered becomes narrow, and a sufficient bonding strength is not obtained. [Means for Solving the Problems] In the present invention, a premixed master alloy having a higher proportion of the high-melting metal particles in solder is first prepared, then the premixed master alloy is put into molten solder to disperse the high-melting metal particles.Type: GrantFiled: May 9, 2005Date of Patent: July 29, 2014Assignee: Senju Metal Industry Co., Ltd.Inventors: Minoru Ueshima, Takashi Ishii
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Patent number: 8632864Abstract: A decorative metal finish for a part with a non-conductive surface where the non-conductive surface is lightly roughened to improve its adherence capabilities. A thin metal layer is electrolessly deposited on the lightly roughened surface to provide a bright durable metal finish on the non-conductive surface. An translucent finish is deposited over the thin metal layer to provide protection for the metal finish.Type: GrantFiled: August 24, 2009Date of Patent: January 21, 2014Assignee: Lacks Industries, Inc.Inventors: Ling Hao, David P. Hartrick, Lee A. Chase, Alan D. Fanta, Daniel W. Irvine, Yong Zhang, Maoshi Guan
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Patent number: 8298680Abstract: The solder composition comprises particles of a thermodynamically metastable alloy. One of the elements of the alloy will form an intermetallic compound with a metal surface. The solder composition is particularly suitable for use in bumping of semiconductor devices.Type: GrantFiled: May 11, 2005Date of Patent: October 30, 2012Assignees: Koninklijke Philips Electronics N.V., Mat-Tech B.V.Inventors: Nicolaas Johannes Anthonius Van Veen, Mohammad Hossain Biglari
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Patent number: 8016909Abstract: The present invention provides a jetting process for the production of flakes with uniform size distribution to be used in pigments comprising the steps of ejecting molten metal from a jet head and collecting droplets of metal on a solid collecting substrate or collecting droplets of metal in or on a collecting substrate.Type: GrantFiled: August 12, 2005Date of Patent: September 13, 2011Assignee: Dunwilco (1198) LimitedInventor: Ian Robert Wheeler
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Publication number: 20100167079Abstract: The present invention provides a jetting process for the production of flakes with uniform size distribution to be used in pigments comprising the steps of ejecting molten metal from a jet head and collecting droplets of metal on a solid collecting substrate or collecting droplets of metal in or on a collecting substrate.Type: ApplicationFiled: August 12, 2005Publication date: July 1, 2010Inventor: Ian Robert Wheeler
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Publication number: 20090151689Abstract: An internal combustion engine component is composed of an aluminum alloy containing silicon, and includes a plurality of silicon crystal grains located on a slide surface. The slide surface has a ten point-average roughness RzJIS of about 0.54 ?m or more, and a load length ratio Rmr(30) at a cut level of about 30% of the slide surface is about 20% or more.Type: ApplicationFiled: December 25, 2007Publication date: June 18, 2009Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Shinya Iwasaki, Hiroshi Yamagata, Hirotaka Kurita
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Patent number: 7521128Abstract: Methods for the use of nanocrystalline or amorphous metals or alloys as coatings with industrial processes are provided. Three, specific, such methods have been detailed. One of the preferred embodiments provides a method for the high volume electrodeposition of many components with a nanocrystalline or amorphous metal or alloy, and the components produced thereby. Another preferred embodiment provides a method for application of a nanocrystalline or amorphous coatings in a continuous electrodeposition process and the product produced thereby. Another of the preferred embodiments of the present invention provides a method for reworking and/or rebuilding components and the components produced thereby.Type: GrantFiled: May 18, 2006Date of Patent: April 21, 2009Assignee: Xtalic CorporationInventors: Christopher Schuh, Alan Lund
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Patent number: 7123474Abstract: A damping apparatus which includes a first member joined to a first object; a second member joined to a second object; and a vibration absorbing member installed between the first and second members for absorbing vibration. At least one of the first and second members is provided with elastic hooks so that the elastic hooks can be elastically caught by respective edge portions provided at the corresponding object, and the member can be joined to the corresponding object. In this structure, since at least one of the first and second objects is simply joined to the damping apparatus by using the elastic hooks, the installation process of the damping apparatus can be performed in a very simple manner. In addition, since screwing members are unnecessary in the side using the elastic hooks, the number of parts can be reduced.Type: GrantFiled: November 5, 2003Date of Patent: October 17, 2006Assignee: Samsung Electronics Co., Ltd.Inventor: Han-rae Cho
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Patent number: 6852425Abstract: The method of the invention is based on the unique electron-carrying function of a photocatalytic unit such as the photosynthesis system I (PSI) reaction center of the protein-chlorophyll complex isolated from chloroplasts. The method employs a photo-biomolecular metal deposition technique for precisely controlled nucleation and growth of metallic clusters/particles, e.g., platinum, palladium, and their alloys, etc., as well as for thin-film formation above the surface of a solid substrate. The photochemically mediated technique offers numerous advantages over traditional deposition methods including quantitative atom deposition control, high energy efficiency, and mild operating condition requirements.Type: GrantFiled: February 19, 2003Date of Patent: February 8, 2005Assignee: Ut-Battelle, LLCInventor: Zhong-Cheng Hu
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Patent number: 6830822Abstract: A pigment with modified properties because of the powder size being below 100 nanometers. Blue, yellow and brown pigments are illustrated. Nanoscale coated, un-coated, whisker inorganic fillers are included. Stoichiometric and non-stoichiometric composition are disclosed. The pigment nanopowders taught comprise one or more elements from the group actinium, aluminum, antimony, arsenic, barium, beryllium, bismuth, cadmium, calcium, cerium, cesium, cobalt, copper, chalcogenide, dysprosium, erbium, europium, gadolinium, gallium, gold, hafnium, hydrogen, indium, iridium, iron, lanthanum, lithium, magnesium, manganese, mendelevium, mercury, molybdenum, neodymium, neptunium, nickel, niobium, nitrogen, oxygen, osmium, palladium, platinum, potassium, praseodymium, promethium, protactinium, rhenium, rubidium, scandium, silver, sodium, strontium, tantalum, terbium, thallium, thorium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium.Type: GrantFiled: May 30, 2003Date of Patent: December 14, 2004Assignee: NanoProducts CorporationInventor: Tapesh Yadav
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Patent number: 6764772Abstract: A sandwich material comprising two metal plates affixed to and separated by a fibrous core, is characterised in that the core comprises a three-dimensional porous network comprising metal fibres, wherein substantially all of the fibres are inclined at an acute angle to the plates. The sandwich material is lightweight, thin and handles like a monolithic sheet. It displays high beam stiffness and is easy to weld. It as therefore particularly useful in the manufacture of aircraft and vehicle parts.Type: GrantFiled: October 31, 2001Date of Patent: July 20, 2004Assignee: Cambridge University Technical Services Ltd.Inventors: Trevor William Clyne, Athina Markaki
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Patent number: 6635357Abstract: The lightweight bulletproof metal matrix macrocomposites (MMMC) contain (a) 10-99 vol. % of permeable skeleton structure of titanium, titanium aluminide, Ti-based alloys, and/or mixtures thereof infiltrated with low-melting metal selected from Al, Mg, or their alloys, and (b) 1-90 vol. % of ceramic and/or metal inserts positioned within said skeleton, whereby a normal projection area of each of said inserts is equal to or larger than the cross-section area of a bullet or a projectile body. The MMMC are manufactured as flat or solid-shaped, double-layer, or multi-layer articles containing the same inserts or different inserts in each layer, whereby insert projections of each layer cover spaces between inserts of the underlying layer. The infiltrated metal contains 1-70 wt. % of Al and Mg in the balance, optionally, alloyed with Ti, Si, Zr, Nb, V, as well as with 0-3 wt. % of TiB2, SiC, or Si3N4 sub-micron powders, to promote infiltrating and wetting by Al-containing alloys.Type: GrantFiled: February 28, 2002Date of Patent: October 21, 2003Inventors: Vladimir S. Moxson, Eugene Ivanov
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Patent number: 6635348Abstract: Provided is an aerosol method, and accompanying apparatus, for preparing powdered products of a variety of materials involving the use of an ultrasonic aerosol generator (106) including a plurality of ultrasonic transducers (120) underlying and ultrasonically energizing a reservoir of liquid feed (102) which forms droplets of the aerosol. Carrier gas (104) is delivered to different portions of the reservoir by a plurality of gas delivery ports (136) delivering gas from a gas delivery system. The aerosol is pyrolyzed to form particles, which are then cooled and collected. The invention also provides powders made by the method and devices made using the powders.Type: GrantFiled: September 22, 2000Date of Patent: October 21, 2003Assignee: Superior MicroPowders LLCInventors: Mark J. Hampden-Smith, Toivo T. Kodas, Quint H. Powell, Daniel J. Skamser, James Caruso, Clive D. Chandler
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Patent number: 6621033Abstract: A layered anisotropically conductive element, a resistant element, and a feed element constitute an electrode for discharge machining. The layered anisotropically conductive element includes high conductivity layers and low conductivity layers alternately laminated on each other, the high conductivity layers and the low conductivity layers being made of thin metallic plates coated with an insulating film. The layered anisotropically conductive element has an anisotropic conductivity, in which the conductivity in a direction parallel to the low conductivity layers is much higher than that in a direction perpendicular to the low conductivity layers. The resistant element is connected to one of end surfaces of the layered anisotropically conductive element perpendicular to the layers. The feed element is connected to the resistant element.Type: GrantFiled: February 2, 2001Date of Patent: September 16, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tatsushi Sato, Yoshihito Imai, Hidetaka Miyake, Takayuki Nakagawa
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Publication number: 20030082335Abstract: A sandwich material comprising two metal plates affixed to and separated by a fibrous core, is characterised in that the core comprises a three-dimensional porous network comprising metal fibres, wherein substantially all of the fibres are inclined at an acute angle to the plates. The sandwich material is lightweight, thin and handles like a monolithic sheet. It displays high beam stiffness and is easy to weld. It as therefore particularly useful in the manufacture of aircraft and vehicle parts.Type: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Applicant: Cambridge University Technical Services Ltd.Inventors: Trevor William Clyne, Athina Markaki
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Publication number: 20020168538Abstract: A metal alloy composite comprising a phase of a highly-conductive base metal in the from of a matrix and a phase of another metal positioned within the matrix, the base metal being present in a major amount and the other metal being present in a minor amount, the metal alloy composite being capable of being formed into a very thin wire for use in a semiconductor application which includes a terminal assembly comprising an electrically conductive terminal in conductive contact with a conductive member and another electrically conductive terminal in conductive contact with a semiconductor, said terminals being joined by said alloy composite wire, examples of the base metal being gold, copper, and aluminum.Type: ApplicationFiled: April 23, 2002Publication date: November 14, 2002Inventor: Timothy W. Ellis
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Patent number: 6447927Abstract: A composite metal matrix formed of polycrystalline &agr;-Al2O3 fibers encapsulated within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper is disclosed. The resulting materials are characterized by their high strength and low weight are particularly well suited for applications in various industries including high voltage power transmission.Type: GrantFiled: March 20, 2000Date of Patent: September 10, 2002Assignee: 3M Innovative Properties CompanyInventors: Colin McCullough, Andreas Mortensen, Paul S. Werner, Herve E. Deve, Tracy L. Anderson
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Patent number: 6413649Abstract: The present invention is directed to brazing filler metals that can be used in the infiltration brazing of porous matrix materials without the need for a flux. The brazing filler metals contain two different Group II metals and a third metal of Group 9 and 10. A particular brazing filler metal of the invention contains silver, copper, and nickel. The invention is also directed to composite materials formed by infiltration of the brazing material into a porous matrix, and to methods for preparing the composite materials. The invention is further directed to composite articles fabricated from composite materials, including steel bearings or bushings, and to methods of preparing the composite articles.Type: GrantFiled: March 6, 1998Date of Patent: July 2, 2002Assignee: The Morgan Crucible Company plcInventors: David J. Kepniss, Toshimasa Oyama
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Patent number: 6361878Abstract: A method of providing a roughened bond coat, for example in a thermal barrier coating system, comprises providing an oxidation-resistant plasma-sprayed layer onto a substrate and disposing a slurry overlayer on the oxidation-resistant plasma-sprayed layer. These steps form a roughened bond coat possessing an uneven, undulated, and irregular surface. A roughened bond coat in a thermal barrier coating system reduces de-bonding of the bond coat and a thermal barrier coating layer, which is desirable to maintain the insulation features of the thermal barrier coating system.Type: GrantFiled: February 20, 2001Date of Patent: March 26, 2002Assignee: General Electric CompanyInventors: Ann Melinda Ritter, Melvin Robert Jackson, Curtis Alan Johnson
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Patent number: 6344270Abstract: Metal matrix composite wires that include at least one tow comprising a plurality of substantially continuous, longitudinally positioned fibers in a metal matrix. The fibers are selected from the group of ceramic fibers carbon fibers, and mixtures thereof. The wires have certain specified characteristics such as roundness values, roundness uniformity values, and/or diameter uniformity values.Type: GrantFiled: July 14, 2000Date of Patent: February 5, 2002Assignee: 3M Innovative Properties CompanyInventors: Colin McCullough, David C. Lueneburg, Paul S. Werner, Herve E. Deve, Michael W. Carpenter, Kenneth L. Yarina
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Publication number: 20020004141Abstract: The magnet has hard magnetic grains (K), with the hard magnetic grains (K) separated from one another in a surface layer of the magnet by a first phase (P1), while the hard magnetic grains (K) in the remaining part of the magnet are separated from one another through a nonmagnetic second phase (P2). The first phase (P1) is more corrosion resistant than the second phase (P2), so that the surface layer serves as corrosion protection. The first phase (P1) has, in addition to elements of which the second phase (P2) consists, at least one further element.Type: ApplicationFiled: May 18, 2001Publication date: January 10, 2002Inventors: Peter Schrey, Wilhelm Fernengel, Lothar Zapf
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Publication number: 20010053456Abstract: The present invention is directed to brazing filler metals that can be used in the infiltration brazing of porous matrix materials without the need for a flux. The brazing filler metals contain two different Group II metals and a third metal of Group 9 and 10. A particular brazing filler metal of the invention contains silver, copper, and nickel. The invention is also directed to composite materials formed by infiltration of the brazing material into a porous matrix, and to methods for preparing the composite materials. The invention is further directed to composite articles fabricated from composite materials, including steel bearings or bushings, and to methods of preparing the composite articles.Type: ApplicationFiled: March 6, 1998Publication date: December 20, 2001Inventors: DAVID J. KEPNISS, TOSHIMASA OYAMA
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Patent number: 6277499Abstract: A method is taught for protecting copper and copper-based composites from high temperature oxidation, by the application thereto of a cobalt-based alloy diffusion barrier and a copper-aluminum alloy protective outer layer.Type: GrantFiled: April 23, 1992Date of Patent: August 21, 2001Assignee: United Technologies CorporationInventors: Russell A. Beers, Abdus S. Khan, Allan A. Noetzel
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Patent number: 6254998Abstract: A method for making foam structures suitable for use as mechanical energy absorbers, structural members, filters, catalyst carriers or the like. A composite rod comprising an outer shell and an inner core is formed of respective mixtures of powders. The mixture for the outer shell comprises a sinterable powdered structural material such as ceramics, metals, intermetallics, and a powdered binder such as paraffin, wax or polymer. The inner core comprises a powdered channel-forming filler material such as melamine or polymers, or soluble inorganic compounds or a metal that can differentially be removed from the structural material of the shell. The composite rod may be formed by extrusion. The composite rod is sectioned into a plurality of composite rod segments of predetermined length and a plurality of these segments is assembled in randomly oriented relationship to one another. The assemblage of rod segments is then consolidated, and the binder and filler are then removed, as by heating.Type: GrantFiled: February 2, 2000Date of Patent: July 3, 2001Assignee: Materials and Electrochemical Research (MER) CorporationInventor: Lev J. Tuchinsky
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Patent number: 6224989Abstract: A cylinder block for an automotive engine that includes a sintered cylindrical body made of a first metal, the sintered cylindrical body having a plurality of pores. A powder of a second metal is dispersed into the pores of the sintered cylindrical body, and a cylinder block body is disposed around the sintered cylindrical body while filling the pores of the sintered cylindrical body. The main body is made of a third metal and integrally formed with the sintered cylindrical body by an intemetallic compound formed by a reaction between the first, second, and third metals.Type: GrantFiled: February 25, 1999Date of Patent: May 1, 2001Assignee: Hyundai Motor CompanyInventor: Jun-su Kim
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Patent number: 6210809Abstract: The contact material of the present invention comprises: an anti-arcing constituent consisting of at least one TiC, V and VC of which the content is 30˜70 volume % and whose mean particle (grain) size is 0.1˜9 &mgr;m; C whose content is 0.005˜0.5 weight % with respect to the anti-arcing constituent, whose diameter is 0.01˜5 &mgr;m when its shape is calculated as spherical, and which is in non-solid solution condition or condition in which it does not form a chemical compound; and a conductive constituent consisting of Cu and constituting the balance.Type: GrantFiled: December 31, 1998Date of Patent: April 3, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Tsutomu Okutomi, Atsushi Yamamoto, Iwao Ohshima, Tsuneyo Seki, Mitsutaka Homma, Takashi Kusano
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Patent number: 6114048Abstract: The invention provides for a functionally-graded metal substrate that is made of at least two metal compositions, a functional insert and a surrounding body that surrounds the functional insert. In a preferred embodiment of the invention a functional insert powder composition of loose powder metal is placed in a compact of a surrounding body powder composition and both metal compositions are sintered in a sintering furnace to form a sintered part. The sintered part is infiltrated in part or in whole with a molten metal compound to produce a functionally graded metal substrate having a density of at least 90% of theoretical. A heat-generating component such as a chip can be attached to the metal substrate for use in microelectronic packaging. When the functionally-graded metal substrate has two discrete compositions of copper/tungsten the surrounding body which has a CTE that ranges from about 5.6ppm/.degree. C. to about 7 ppm/.degree. C.Type: GrantFiled: September 4, 1998Date of Patent: September 5, 2000Assignee: Brush Wellman, Inc.Inventors: David E. Jech, Jordan P. Frazier, Richard H. Sworden, Juan L. Sepulveda
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Patent number: 6074716Abstract: A composite material comprising a flexible jacket covering a roving of fibers which have been impregnated with a metal powder is described. The flexible jacket allows the material to be handled easily and to be weaved, knitted or braided into the shape or form desired. The jacket is made from a thermoplastic which decomposes or is otherwise fugitive during the processing of the woven form in which the metal is melted to consolidate the form into a finished part.Type: GrantFiled: June 10, 1997Date of Patent: June 13, 2000Assignee: McDonnell Douglas CorporationInventor: Thomas K. Tsotsis
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Patent number: 6051117Abstract: An apertured and porous metal article can find use, for example, in diaphragm or membrane electrolysis cells. The article may comprise a thin and flexible metal foam of small pores which, typically, has been perforated with large apertures. The article may also be provided with an electrocatalytic coating. It can be in substantial physical contact with a membrane or diaphragm separator used in the cell for separating anode and cathode members or compartments. There is also disclosed the preparation of the article and an electrolysis cell utilizing the resulting apertured and porous metal article.Type: GrantFiled: November 5, 1997Date of Patent: April 18, 2000Assignee: Eltech Systems, Corp.Inventors: Donald S. Novak, Douglas J. Waskovich, Mark L. Arnold, Kevin J. O'Leary, Eric J. Rudd, Thomas J. Gilligan, III, Timothy M. Hambor
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Patent number: 6027821Abstract: A contact material for a vacuum interrupter including, a conductive component including at least Cu, and an arc-proof component including at least one selected from the group consisting of carbides of W, Zr, Hf, V and Ti. An amount of the conductive component in the contact material is 40-50 vol %, an amount of the arc-proof component in the contact material is 50-60 vol %, and a grain size of the arc-proof component is 3 .mu.m or less. A total amount of a sintering activator including at least one selected from the group consisting of Co, Fe and Ni melted in the conductive component is 0.1% or less of the amount of the conductive component.Type: GrantFiled: December 9, 1996Date of Patent: February 22, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Atsushi Yamamoto, Tsuneyo Seki, Takashi Kusano, Tsutomu Okutomi
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Patent number: 5985440Abstract: Sintered silver-iron material for electrical contacts, with properties comparable with those of silver-nickel materials, is obtained by using iron powder having more than 0.25% carbon by weight and microhardness higher than 200 HV 0.025 and sintering in a hydrogen-free protective gas.Type: GrantFiled: February 27, 1997Date of Patent: November 16, 1999Assignee: Degussa AktiengesellschaftInventors: Wolfgang Weise, Willi Malikowski, Roger Wolmer, Peter Braumann, Andreas Koffler
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Patent number: 5933703Abstract: A process for the preparation of a fiber reinforced metal matrix composite comprising fibers embedded in a metal in which the process comprises forming a body with a layer of aligned fibers between at least two layers of metal foil and densifying said layers wherein the layer of aligned fibers comprises metal particles interposed between individual fibers, the metal particles being compatible with the metal foil. A preform for a fiber reinforced metal matrix composite is also claimed which comprises a resin and a layer of aligned fibers, the layer having metal particles interposed between adjacent fibers and the layer and particles being bonded together with the resin.Type: GrantFiled: November 18, 1997Date of Patent: August 3, 1999Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventor: James Garfield Robertson
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Patent number: 5904966Abstract: A laminated structure is obtained by hot isostatic pressing. The structure comprises a first metallic outer layer (produced by powder metallurgy) on one side, a second metallic outer layer on the other side which can form a brittle intermetallic phase and/or a brittle ordered phase with the first side, and a ductile metallic intermediate layer, the layers possessing mutually different coefficients of thermal expansion, whereby the intermediate layer acts as a diffusion barrier against the formation of the aforementioned brittle intermetallic phases or ordered phases. The invention also concerns a manufacturing method for the structure and an application of same as a cathode in a plasma sputtering unit.Type: GrantFiled: March 22, 1996Date of Patent: May 18, 1999Assignee: Innovative Sputtering Technology N.V. (I.S.T.)Inventor: Paul Lippens
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Patent number: 5863670Abstract: A joint of Ti--Al intermetallic compounds, comprising a plurality of base members made of a Ti--Al intermetallic compound and having Ti--Al lamellar grains, and a junction provided between the base members, made of a Ti--Al intermetallic compound and having Ti--Al lamellar grains, wherein some of the lamellar grains of the junction extend into the base members, and some of the lamellar grains of each base member may extend into the junction or pass through the junction into the other base member.Type: GrantFiled: April 18, 1996Date of Patent: January 26, 1999Assignee: NHK Spring Co., Ltd.Inventors: Kohei Taguchi, Michihiko Ayada
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Patent number: 5853083Abstract: Interrupting and chopping characteristics of a Cu--Cr contact alloy are improved by rounding Cr particles to be spherical in the alloy. The Cr particles are rounded in the alloy by sintering raw Cr powder particles having an average particle diameter of less than 100 .mu.m at a temperature of 1,100.degree. C. or higher with Cu powder, or by sintering raw Cr powder particles having an average particle diameter of 100 to 150 .mu.m at a temperature of 1,200.degree. C. or higher with Cu powder.Type: GrantFiled: August 23, 1996Date of Patent: December 29, 1998Assignee: Fuji Electric Co., Ltd.Inventors: Masayuki Furusawa, Hisaji Shinohara, Nobuyuki Odaka, Katsuhiko Taguchi, Yukio Osawa, Kazuro Shibata, Shoichi Ote
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Patent number: 5682595Abstract: The ceramic/metal composite material is comprised of a ceramic phase with particles of alumina or of a solid solution based on alumina and a refractory phase including titanium nitride and/or carbonitride and a metallic matrix based on Ni, Co, Fe. The interface between the particles of alumina or the solid solution of alumina and the metallic matrix is rich in nitrogen and in titanium or in compounds thereof.Type: GrantFiled: November 1, 1994Date of Patent: October 28, 1997Assignee: UFEC- Universal Fusion Energie Company SAInventors: Denis Gonseth, Daniele Mari, Paul Bowen, Claude Paul Carry, Pascal Streit, Roberto Mulone
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Patent number: 5666643Abstract: A braze material is provided for repairing an article, and particularly components formed from cobalt and nickel-base superalloys, such as gas turbine engine components. The braze material is composed of high melt particles distributed within a braze alloy. The braze alloy can be any suitable bonding material of the type used to repair components that must operate at high temperatures. The particles are single crystal, directionally solidified or equiaxed particles formed from a superalloy or ceramic material, or mixtures thereof. Importantly, the particles have an aspect ratio (length to width) of at least 4:1. The braze material can be provided and used in the form of a slurry, a presintered preform, a plasticized tape, or in a powdered form.Type: GrantFiled: May 15, 1996Date of Patent: September 9, 1997Assignee: General Electric CompanyInventors: Richard P. Chesnes, Stephen J. Ferrigno, David E. Budinger, Melvin R. Jackson
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Patent number: 5654106Abstract: A method of making an article by joining together at least two porous components is described, the method comprising the steps of making at least two generally tubular PM components to be joined in the axial direction, each component having an axial length less than that of the tubular article; the at least two components both having interconnected porosity and each having at least one mutual mating face; assembling the at least two components together so that the at least one mutual mating faces are in proximity to each other; placing an infiltrant material in the bore of the assembled components; heating the assembled components to melt the infiltrant material and cause it to infiltrate the interconnected porosity at least in the region of the mutual mating faces so as to cause the components to become bonded together by the infiltrant material. Examples of the manufacture of valve guides are given.Type: GrantFiled: March 20, 1995Date of Patent: August 5, 1997Assignee: Brico Engineering LimitedInventors: Charles Grant Purnell, Helen Ann Brownlie
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Patent number: 5580666Abstract: A multi-phase cemented ceramic article, method of making same, and the material thereof is disclosed which is useful for machining and forming of metals, including ferrous metals, titanium, aluminum and other metals. The article and its material preferably includes novel microstructures including platelets, a range of grain sizes which yields superior hardness and other characteristics, and a lower tungsten concentration within the binder phase than has been seen in the prior art. The preferred composition includes ultrafine WC, an ultrafine solid solution of (Ti, Ta, W)C, and a cobalt binder. Platelets are formed in-situ, eliminating the need to add them during manufacture for improving toughness.Type: GrantFiled: January 20, 1995Date of Patent: December 3, 1996Assignee: The Dow Chemical CompanyInventors: Ellen M. Dubensky, Stephen D. Dunmead, Daniel F. Carroll
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Patent number: 5580665Abstract: An article essentially consisting of one or more of Ti-Al intermetallic compounds is fabricated so as to have a volume ratio of voids no more than 3.5%, by preparing a mixture of materials selected from a group consisting of Ti, Ti alloys, Al, Al alloys, and Ti-Al compounds, having a composition suitable for forming a desired Ti-Al intermetallic compound, and heating said mixture so that said mixture may be sintered. Typically, the temperature and pressure for the heating or sintering process is appropriately selected so that the desired porosity may be obtained. The mechanical strength of an article according to the present invention is not only improved but is highly predictable, or, in other word, highly reliable. The fabrication costs can be reduced because the fabrication process involves only relatively low temperatures when pressing and heating the work at the same time.Type: GrantFiled: June 6, 1995Date of Patent: December 3, 1996Assignee: NHK Spring Co., Ltd.Inventors: Kohei Taguchi, Michihiko Ayada, Hideo Shingu
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Patent number: 5572725Abstract: Reinforcement fibers are formed from a single crystal garnet body--suitably an aluminum garnet, desirably a rare earth aluminum garnet--having an epitaxial surface layer of a second garnet having a lattice constant larger than that of the body garnet so as to provide a compressive strain, to thereby strengthen the fiber.Type: GrantFiled: October 29, 1993Date of Patent: November 5, 1996Assignee: AlliedSignal, Inc.Inventors: Robert C. Morris, Devlin M. Gualtieri, Dave Narasimhan, Philip J. Whalen
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Patent number: 5534353Abstract: A composite sintered material of a mixed-phase structure comprising fine particles of hard compound compactly and uniformly dispersed in grains of matrix of titanium or titanium alloy. The material is outstanding in abrasion resistance, strength, toughness, etc., and also has high resistance to corrosion by molten nonferrous metals and is therefore reduced in the likelihood of dissolving out into the melt.The sintered material is produced by uniformly mixing together a metal powder for forming the matrix of the desired sintered material and a powder for forming particles of hard compound to be dispersed, molding the powder mixture into a block under pressure, atomizing the block while melting the block and sintering the resulting powder.Type: GrantFiled: February 1, 1994Date of Patent: July 9, 1996Assignee: Kubota CorporationInventors: Takahiro Kaba, Takashi Nishi, Tsuyoshi Mitsuhashi
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Patent number: 5532069Abstract: A dispersion-strengthened aluminum alloy having a composite structure containing a matrix of .alpha.-aluminum and a precipitation deposited phase of an intermetallic compound with the intermetallic compound in a volume ratio of not more than 35 vol. %, has both high strength and high toughness. The precipitation phase of the intermetallic compound has an aspect ratio of not more than 3.0, the .alpha.-aluminum has a crystal grain size which is at least twice the grain size of the precipitation phase of the intermetallic compound, and the crystal grain size of the .alpha.-aluminum is not more than 200 nm. It is possible to obtain an aluminum alloy having the aforementioned limited structure by carrying out first and second heat treatments on gas-atomized powder containing at least 10 vol. % of an amorphous phase or a green compact thereof and thereafter carrying out hot plastic working.Type: GrantFiled: December 22, 1994Date of Patent: July 2, 1996Assignees: Tsuyoshi Masumoto, Akihisa InoueInventors: Tsuyoshi Masumoto, Akihisa Inoue, Toshihiko Kaji, Junji Iihara, Yoshishige Takano
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Patent number: 5529600Abstract: A material for friction components made by a process including the steps of providing a first powder consisting of grains of a comparatively harder material with a comparatively higher coefficient of friction and an average grain size of from 60 to 100 microns, and a second powder consisting of grains of comparatively softer material with a comparatively lower coefficient of friction and an average grain size of from 60 to 100 microns; mixing the first powder and the second powder to form a powder mixture having a total volume; and subjecting the powder mixture to a pressure and temperature sufficient for the grains of the first powder to be intermixed with the comparatively softer material of the second powder so that the comparatively harder material substantially fills an intergranular space between the grains of the first powder to form the material for the friction components, the comparatively harder material occupying from 1/3 to 4/5 of the total volume of the powder mixture.Type: GrantFiled: July 22, 1994Date of Patent: June 25, 1996Assignee: Sintermetal S.A.Inventors: Antonio R. Fernandez, Pascal Belair, Jean R. Gras
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Patent number: 5508116Abstract: A metal matrix composite reinforced with shape memory alloy is disclosed ch is formed by blending metal particles and shape memory alloy particles to form a homogeneous powder blend, and consolidating the powder blend to form a unitary mass. The unitary mass is then plastically deformed such as by extrusion in the presence of heat so as to cause an elongation thereof, whereby the metal particles form a matrix and the shape memory alloy partices align in the direction of elongation of the unitary mass. The composite can be used in structural applications and will exhibit shape memory characteristics.Type: GrantFiled: April 28, 1995Date of Patent: April 16, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventor: David J. Barrett
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Patent number: 5498483Abstract: A wear-resistant sintered ferrous alloy for use as a valve seat, the alloy comprising an iron-based matrix having a sorbite or pearlite structure consisting of 0.5 to 1.5% by weight of C, 0.5 to 3% by weight of Ni, 0.5 to 2% by weight of Mo, 0.1 to 8% by weight of Co, 0.05 to 1% by weight of Mn, and the balance of Fe, with unavoidable impurities, and having a Vickers hardness of from 300 to 450; hard particles A consisting of 1.5 to 2.5% by weight of C, 38 to 45% by weight of Cr, 18 to 30% by weight of W, 5 to 15% by weight of Co, 0.5 to 3% by weight of Mo, 0.03 to 0.5% by weight of Ti, and the balance of Fe, with unavoidable impurities, and having an average particle diameter of from 30 to 80.mu.m; and hard particles B consisting of 60 to 70% by weight of Mo, 0.5 to 2% by weight of Si, and the balance of Fe, with unavoidable impurities, and having an average particle diameter of from 30 to 80 .mu.Type: GrantFiled: April 28, 1995Date of Patent: March 12, 1996Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kozo Ito, Yoshishige Takano
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Patent number: 5455118Abstract: The present invention describes a plated component and plating method in which the plating adheres to the reinforcement particles on the surface of a composite component. This allows the component to be processed above 400.degree. C. without blistering. The plating method allows brazing, such as gold/tin and gold/germanium brazing, maintains hermeticity, and prevents corrosion over a sustained period of time. By utilizing an activator such as palladium, which can produce catalytic sites on which electroless nickel can be deposited, a component with a surface of exposed reinforcement particles can be plated to form a uniform surface without voids. It has been found that by using a combination of nickel-boron and a palladium activator, that Al/SiC composites can be plated with good adhesion when exposed to temperatures above 400.degree. C.Type: GrantFiled: February 1, 1994Date of Patent: October 3, 1995Assignee: PCC Composites, Inc.Inventor: Arnold J. Cook