Base Metal One Or More Of Iron Group, Copper(cu), Or Noble Metal Patents (Class 75/246)
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Publication number: 20100196188Abstract: The invention relates to a method of producing a steel moulding using a sinter powder with a base of iron containing at least one non-ferrous metal selected from a group comprising Mn, Cr, Si, Mo, Co, V, B, Be, Ni and Al, the rest being Fe and unavoidable impurities resulting from the manufacturing process, comprising the steps of preparing the sinter powder, compacting the sinter powder to produce a green compact in a mould, sintering the green compact under a reducing atmosphere and then cooling and hardening, characterised in that the total proportion of non-ferrous metals in the sinter powder is selected from a range with a lower limit of 1% by weight and an upper limit of 60% by weight, and the sinter powder is sintered to an at least approximately completely austenitic structure, and hardening takes place by subjecting the steel moulding to mechanical load so that the austenitic structure is transformed at least partially to a martensitic structure.Type: ApplicationFiled: January 29, 2010Publication date: August 5, 2010Inventors: Georg Kalss, Gerold Stetina
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Patent number: 7758706Abstract: A method for producing a dust core compact includes the steps of forming a compact component by pressure-forming a soft magnetic powder having an average particle diameter Da under a pressure Pa, and forming a compact by pressure-forming a soft magnetic powder having an average particle diameter Db and the compact component under a pressure Pb. Average particle diameters Da and Db of the soft magnetic powders satisfy relationship Da/Db?2, and pressures Pa and Pb applied during the pressure-forming satisfy relationship Pa/Pb?½. With this structure, a method for producing a dust core compact exhibiting a high strength and capable of being fabricated even when it has a complex shape, and the dust core compact can be provided.Type: GrantFiled: September 16, 2005Date of Patent: July 20, 2010Assignees: Sumitomo Electric Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kazuhiro Hirose, Haruhisa Toyoda, Atsushi Sato, Takao Nishioka, Yasuhiro Endo, Ryoji Mizutani, Kazutaka Tatematsu, Kenji Harada
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Patent number: 7749298Abstract: To provide an iron-based sintered alloy excellent in shape accuracy and wear resistance, and reduced hostility to mating materials, and having sufficient hardness after tempering, as well as a manufacturing method thereof. Iron-based alloy powder of a composition comprising Cr: from 1 to 3.5 mass %, Mo: from 0.2 to 0.9 mass %, V: from 0.1 to 0.5 mass % and the balance of Fe and impurities, and carbon powder are mixed at a ratio of the carbon powder based on the entire portion within a range from 0.8 to 1.1 mass %, the mixture is compacted, the compacted body is sintered and quenching is applied to the sintered body heated again after once lowering temperature of the sintered body. This can provide an iron-based sintered alloy where fine M7C3 carbides are dispersed in martensitic texture.Type: GrantFiled: August 19, 2004Date of Patent: July 6, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroshi Okajima, Satoshi Uenosono
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Publication number: 20100162851Abstract: A sintered soft magnetic powder molded body having a composition containing Fe, 44 to 50% by mass of Ni and 2 to 6% by mass of Si, or a composition containing Fe and 2 to 6% by mass of Si, wherein the Si is unevenly distributed among particles, is provided.Type: ApplicationFiled: April 14, 2008Publication date: July 1, 2010Applicant: MITSUBISHI STEEL MFG. CO., LTD.Inventors: Kenichi Unoki, Soichi Yamamoto, Yuji Soda, Masakatsu Fukuda
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Publication number: 20100154588Abstract: A water-atomized iron-based powder is provided that is pre-alloyed with 0.75-1.1% by weight of Ni, 0.75-1.1% by weight of Mo and up to 0.45% by weight of Mn, and further including 0.5-3.0%, preferably 0.5-2.5% and most preferably 0.5-2.0% by weight of Cu, and inevitable impurities, the balance being Fe.Type: ApplicationFiled: June 12, 2008Publication date: June 24, 2010Inventors: Sigurd Berg, Ulf Engström, Caroline Larsson
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Publication number: 20100135841Abstract: A method for forming a compact from a powder wherein a forming portion 1A in a mold body 2 is filled with a raw powder and upper and lower punches 3,4 are fitted into the forming portion 1A to form the compact. Prior to filling the forming portion 1A with the raw powder M, a solution L with a lubricant being uniformly dissolved in a solvent is applied to a peripheral portion of the forming portion 1A, and then the solution is evaporated, thus forming a crystallized layer B thereon. Thus, the reduction of a force for ejecting the compact is realized, while improving the density of the compact, realizing the stable and successive production of the compact.Type: ApplicationFiled: December 22, 2009Publication date: June 3, 2010Applicant: Diamet CorporationInventors: Takashi Nakai, Kinya Kawase
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Patent number: 7722697Abstract: The present invention relates to a steel band 1 for the manufacturing of doctor blades, coater blades or creping blades comprising a steel composition comprising in percent per weight 1-3% C, 4-10% Cr, 1-8% Mo, 2.5-10% V and the remainder essentially iron and contaminants in normal amounts, wherein the steel band 1 is produced by using a powder metallurgical process. Further, this invention relates to doctor blades, coater blades or creping blades of this steel band, as well as a method for its manufacture.Type: GrantFiled: July 7, 2005Date of Patent: May 25, 2010Assignee: Böhler-Uddeholm Precision Strip GmbH & Co. KGInventors: Manfred Daxelmüller, Helmut Ponemayr
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Patent number: 7691173Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON® process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.Type: GrantFiled: September 18, 2007Date of Patent: April 6, 2010Assignee: Baker Hughes IncorporatedInventors: Jimmy W. Eason, James C. Westhoff, Roy Carl Lueth
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Patent number: 7690312Abstract: A projectile, including a compacted and sintered mixture of a plurality of tungsten particles and a plurality of iron particles. At least a portion of the plurality of iron particles are bonded together, and no intermetallic compounds or alloys of the tungsten particles and iron particles are formed during the compaction and sintering processes. The final density of the projectile is from about 8.1 grams per cubic centimeter to about 12.1 grams per cubic centimeter, and no substantial densification occurs during sintering. A method of producing such a projectile is also disclosed.Type: GrantFiled: January 20, 2005Date of Patent: April 6, 2010Inventor: Timothy G. Smith
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Publication number: 20100077888Abstract: The present invention is directed to an iron powder commodity and to a process for producing such iron powder commodity comprising dehydrating and de-oiling hot strip mill (HSM) sludge within an inert gas atmosphere contained in a reaction chamber; venting and processing reaction chamber off-gas into a hydrocarbon product; discharging from the reaction chamber a dry de-oiled iron powder commodity that contains nanoparticle and ultrafine particle iron-bearing solids, and beneficiating the discharged iron powder commodity into particles of similar properties.Type: ApplicationFiled: May 28, 2009Publication date: April 1, 2010Applicant: Recovery Technology, LPInventor: John D. Lynn
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Patent number: 7682417Abstract: A cold work steel article. The article comprises a material which comprises, in addition to Fe, the elements C, Si, Mn, P, S, Cr, Mo, Ni, V, W, Cu, Co, Al, N and O in certain concentrations and has been produced by by a powder metallurgical process. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.Type: GrantFiled: April 23, 2004Date of Patent: March 23, 2010Assignee: Bohler Edelstahl GmbHInventors: Ingrid Schemmel, Stefan Marsoner, Werner Liebfahrt
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Publication number: 20100068088Abstract: Hot briquette iron includes a plurality of reduced iron particles which are bonded to each other by hot forming, wherein the reduced iron particles each have a surface region having an average carbon content of 0.1 to 2.5% by mass and a central region positioned inside the surface region and having an average carbon content higher than that of the surface region.Type: ApplicationFiled: November 7, 2007Publication date: March 18, 2010Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hidetoshi Tanaka, Takeshi Sugiyama
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Patent number: 7678173Abstract: In a Pb-free copper-based sintered alloy containing from 1 to 30% of Bi and from 0.1 to 10% of hard matter particles having from 10 to 50 ?m of average particle diameter, the Bi phase has a smaller average particle diameter than that of the hard matter particles and is dispersed in the Cu matrix, or the hard matter particles having 50% or less of a contact length ratio with the Bi phase based on the total circumferential length of the hard particle, which are in contact with said Bi phase, are present in a ratio of 70% or more based on the entire number of the hard matter particles.Type: GrantFiled: January 13, 2005Date of Patent: March 16, 2010Assignee: Taiho Kogyo Co., Ltd.Inventors: Hiromi Yokota, Daisuke Yoshitome, Hiroaki Kobayashi, Hiroyuki Kawaguti
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Publication number: 20100054981Abstract: Provided herein are systems, methods, and compositions for magnetic nanoparticles and bulk nanocomposite magnets.Type: ApplicationFiled: December 22, 2008Publication date: March 4, 2010Applicant: Board of Regents, The University of Texas SystemInventor: J. Ping Liu
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Patent number: 7666245Abstract: Provided is iron-based metal powder for powder metallurgy including a metallic soap containing at least one or more types of metal selected from a group of Ag, Au, Bi, Co, Cu, Mo, Ni, Pd, Pt, Sn and Te having a higher standard oxidization potential than iron, and an additional metal which forms a liquid phase at a temperature of 1200° C. or less in the combination with the metal, wherein the soap contains metal for forming an alloy phase between the two. As a result, obtained is mixed powder for powder metallurgy capable of improving the rust prevention effect easily without having to hardly change the conventional processes.Type: GrantFiled: August 5, 2005Date of Patent: February 23, 2010Assignee: Nippon Mining & Metals Co., Ltd.Inventors: Toru Imori, Atsushi Nakamura, Yasushi Narusawa, Masataka Yahagi
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Patent number: 7662207Abstract: The invention provides a super hard and tough, nano-crystal austenite steel bulk material having an improved corrosion resistance, and its preparation process. The austenite steel bulk material comprises an aggregate of austenite nano-crystal grains containing 0.1 to 2.0% (by mass) of a solid solution type nitrogen, wherein an oxide, nitride, carbide or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and/or in said nano-crystal grains. For preparation, fine powders of austenite steel-forming components, i.e., iron and chromium, nickel, manganese, carbon or the like are mixed with a substance that becomes a nitrogen source. Mechanical alloying (MA) is applied to the mixture, thereby preparing nano-crystal austenite steel powders having a high nitrogen concentration. Finally, the austenite steel powders are consolidated by sintering by means of spark plasma sintering, rolling or the like.Type: GrantFiled: September 26, 2003Date of Patent: February 16, 2010Assignee: Nano Technology Institiute, Inc.Inventors: Harumatsu Miura, Nobuaki Miyao, Hidenori Ogawa, Kazuo Oda, Munehide Katsumura, Masaru Mizutani
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Patent number: 7645317Abstract: The present invention relates to a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains a graphite powder and a carbon black, and in which a mixing ratio of the graphite powder to the carbon black is in the range of 25 to 85 parts by weight to 75 to 15 parts by weight; and a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains, as a main component, a carbon black having a dibutyl phthalate absorption of 60 mL/100 g or less and a nitrogen absorption specific surface area of 50 m2/g or less. The mixed powder for powder metallurgy of the invention is less in the dust generation and segregation of the carbon supply component. Additionally, when the mixed powder for powder metallurgy of the invention is used, a green compact and a sintered body excellent in the mechanical property can be produced.Type: GrantFiled: March 13, 2007Date of Patent: January 12, 2010Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Takayasu Fujiura, Yasuko Yakou, Satoshi Nishida, Yuuji Taniguchi, Tetsuya Goto
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Patent number: 7645349Abstract: A sintered permanent magnet having a composition comprising, by mass, 27-33.5% of R, which is at least one of rare earth elements including Y, 0.5-2% of B, 0.002-0.15% of N, 0.25% or less of O, 0.15% or less of C, and 0.001-0.05% of P, the balance being Fe, wherein it is in the shape of a ring having an outer diameter of 10-100 mm, an inner diameter of 8-96 mm, and a height of 10-70 mm, with a plurality of magnetic poles axially extending on an outer circumferential surface. The distribution of a surface magnetic flux density B0 on magnetic poles in an axial direction of the ring magnet is in a range of 92.5% or more of the maximum of B0.Type: GrantFiled: October 10, 2006Date of Patent: January 12, 2010Assignee: Hitachi Metals, Ltd.Inventors: Nobuhiko Fujimori, Kazuhiro Sonoda, Takashi Tsukada, Junji Matsushima, Yasushi Kimura, Satoru Kikuchi
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Patent number: 7635405Abstract: Improved drying, binder evaporation, and sintering processes which may be used in conjunction with specialized sintering tools to provide for the geometrically stable sintering of large, complex, metal injection molded preform parts or flowbodies. The improved process includes a three-stage drying process, a single stage binder evaporation process, and a two-stage sintering process.Type: GrantFiled: November 15, 2004Date of Patent: December 22, 2009Assignee: Honeywell International Inc.Inventors: Jyh-Woei J. Lu, Kenneth J. Bartone, Donald M. Olson, Dwayne M. Benson, John N. Tervo
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Patent number: 7622153Abstract: This invention discloses a method of making an oxygen scavenging particle comprised of an activating component and an oxidizable component wherein one component is deposited upon the other component from a vapour phase and is particularly useful when the activating component is a protic solvent hydrolysable halogen compound and the oxygen scavenging particle is a reduced metal.Type: GrantFiled: August 3, 2005Date of Patent: November 24, 2009Assignee: M&G USA CorporationInventor: Kevin L. Rollick
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Patent number: 7622011Abstract: Disclosed is a Fe—Ga—P—C—B—Si based metallic glass alloy particle prepared by a gas atomizing process, which has an approximately complete spherical shape, a relatively large particle size and a high crystallization temperature (Tx). The plurality of particles may be subjected to a spark plasma sintering process at the crystallization temperature or less under a compression pressure of 200 MPa or more, to provide a bulk Fe-based sintered metal soft magnetic material of metallic glass, which has a high density, a single phase structure of metallic glass in an as-sintered state, excellent soft magnetic characteristics applicable to a core of a magnetic head, a transformer or a motor, and a high specific resistance.Type: GrantFiled: December 24, 2003Date of Patent: November 24, 2009Assignee: Japan Science and Technology AgencyInventors: Akihisa Inoue, Baolong Shen
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Publication number: 20090285712Abstract: The present invention relates to a metal powder mixture that is suitable for producing sintered bodies. The powder mixture is suitable as a binder for hard metals and contains: a) at least one prealloyed powder selected from the group of iron/nickel, iron/cobalt, iron/nickel/cobalt and nickel/cobalt; b) at least one element powder selected from the group of iron, nickel and cobalt or a prealloyed powder selected from the group consisting of iron/nickel, iron/cobalt, iron/nickel/cobalt and nickel/cobalt which is different from component a). The invention also relates to a cemented hard material which uses the inventive powder mixture and a hard material powder, wherein the overall composition of the components a) and b) together contains not more than 90% by weight of cobalt and not more than 70% by weight of nickel and the iron content.Type: ApplicationFiled: September 21, 2007Publication date: November 19, 2009Applicant: H.C. Starck GmbHInventors: Benno Gries, Leo Prakash
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Publication number: 20090277301Abstract: The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 ?m, preferably not more than 25 ?m, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom.Type: ApplicationFiled: July 9, 2007Publication date: November 12, 2009Applicant: H.C. Starck GmbHInventors: Roland Scholl, Ulf Waag, Aloys Eiling
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Patent number: 7601196Abstract: Alloy powder for forming a hard phase for a valve seat material having excellent high temperature wear resistance. The overall composition is consisted of Mo: 48 to 60 mass %, Cr: 3 to 12 mass % and Si: 1 to 5 mass %, and the balance of Co and inevitable impurities.Type: GrantFiled: February 23, 2007Date of Patent: October 13, 2009Assignee: Hitachi Powdered Metals Co., Ltd.Inventors: Hideaki Kawata, Koichiro Hayashi
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Publication number: 20090252634Abstract: The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 ?m, preferably not more than 25 ?m, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom.Type: ApplicationFiled: July 9, 2007Publication date: October 8, 2009Inventors: Roland Scholl, Ulf Waag, Aloys Eiling
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Patent number: 7582362Abstract: A thermal spray composition and method of deposition for abradable seals for use in gas turbine engines, turbochargers and steam turbines. The thermal spray composition includes a solid lubricant and a ceramic preferably comprising 5 to 60 wt % total of the composition in a ratio of 1:7 to 20:1 of solid lubricant to ceramic, the balance a matrix-forming metal alloy selected from Ni, Co, Cu, Fe and Al and combinations and alloys thereof. The solid lubricant is at least one of hexagonal boron nitride, graphite, calcium fluoride, lithium fluoride, magnesium fluoride, barium fluoride, tungsten disulfide and molybdenum disulfide particles. The ceramic includes at least one of albite, illite, quartz and alumina-silica.Type: GrantFiled: January 30, 2007Date of Patent: September 1, 2009Assignee: Sulzer Metco (Canada) Inc.Inventors: Petr Fiala, Anthony Peter Chilkowich, Karel Hajmrle
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Patent number: 7578892Abstract: A magnetic alloy material according to the present invention has a composition represented by Fe100-a-b-cREaAbCoc, where RE is a rare-earth element always including La, A is either Si or Al, 6 at %?a?11 at %, 8 at %?b?18 at %, and 0 at %?c?9 at %, and has either a two phase structure consisting essentially of an ?-Fe phase and an (RE, Fe, A) phase including 30 at % to 90 at % of RE or a three phase structure consisting essentially of the ?-Fe phase, the (RE, Fe, A) phase including 30 at % to 90 at % of RE and an RE(Fe, A)13 compound phase with an NaZn13-type crystal structure. The respective phases have an average minor-axis size of 40 nm to 2 ?m.Type: GrantFiled: March 30, 2006Date of Patent: August 25, 2009Assignee: Hitachi Metals, Ltd.Inventors: Satoshi Hirosawa, Hiroyuki Tomizawa, Ryosuke Kogure
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Patent number: 7578866Abstract: This iron-based sintered alloy contains 0.05 to 3% by mass of calcium carbonate or 0.05 to 3% by mass of strontium carbonate. As a result, an iron-based sintered alloy having excellent machinability is obtained.Type: GrantFiled: March 10, 2004Date of Patent: August 25, 2009Assignee: Mitsubishi Materials PMG CorporationInventors: Kinya Kawase, Yoshinari Ishii
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Patent number: 7575619Abstract: A wear resistant sintered member comprising an Fe base alloy matrix and a hard phase dispersed in the Fe base alloy matrix and having an alloy matrix and hard particles precipitated and dispersed in the alloy matrix. Manganese sulfide particles having particle size of 10 ?m or less are uniformly dispersed in crystal grains of the overall Fe base alloy matrix, and manganese sulfide particles having particle size of 10 ?m or less are dispersed in the alloy matrix of the hard phase.Type: GrantFiled: March 24, 2006Date of Patent: August 18, 2009Assignee: Hitachi Powdered Metals Co., Ltd.Inventors: Hideaki Kawata, Hiroki Fujitsuka
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Patent number: 7572312Abstract: A sintered valve seat includes: a matrix; 5 to 40 mass % of a hard phase dispersed in the matrix, the hard phase containing 48 to 60 mass % of Mo; 3 to 12 mass % of Cr; 1 to 5 mass % of Si; and the balance of Co and inevitable impurities; and a structure in which a Cr sulfide is dispersed around the hard phase. The hard phase is formed with a Co base alloy matrix and compounds which are mainly composed of Mo silicides and are integrally precipitated in the Co base alloy matrix.Type: GrantFiled: June 13, 2006Date of Patent: August 11, 2009Assignee: Hitachi Powdered Metals Co., Ltd.Inventors: Hideaki Kawata, Hiroki Fujitsuka
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Publication number: 20090186230Abstract: Metallic materials consisting essentially of a conductive metal matrix, preferably copper, and a refractory dopant component selected from the group consisting of tantalum, chromium, rhodium, ruthenium, iridium, osmium, platinum, rhenium, niobium, hafnium and mixtures thereof, preferably in an amount of about 0.1 to 6% by weight based on the metallic material, alloys of such materials, sputtering targets containing the same, methods of making such targets, their use in forming thin films and electronic components containing such thin films.Type: ApplicationFiled: October 23, 2008Publication date: July 23, 2009Applicant: H.C. Starck Inc.Inventors: Shuwei Sun, Mark Gaydos, Richard Wu, Prabhat Kumar
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Patent number: 7556668Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON™ process, or hot ecstatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.Type: GrantFiled: December 4, 2002Date of Patent: July 7, 2009Assignee: Baker Hughes IncorporatedInventors: Jimmy W. Eason, James C. Westhoff, Roy Carl Lueth
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Patent number: 7547345Abstract: A liner (18) for a shaped charge (10) that utilizes a high performance powered metal mixture to achieve improved penetration depths during the perforation of a wellbore is disclosed. The high performance powdered metal mixture includes powdered tungsten and powdered metal binder. The powered metal binder may be selected from the group consisting of tantalum, molybdenum, lead, cooper and combination thereof. This mixture is compressively formed into a substantially conically shaped liner (18).Type: GrantFiled: February 22, 2002Date of Patent: June 16, 2009Assignee: Halliburton Energy Services, Inc.Inventors: David J. Leidel, James Phillip Lawson
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Publication number: 20090129963Abstract: There is provided a sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact 6, and sintering the powder compact 6. A copper-based raw powder is composed of a copper-based flat raw powder 2 having an average diameter smaller than that of an iron-based raw powder 1 and an aspect ratio larger than that of the iron-based raw powder 1, and a copper-based small-sized raw powder 3 having the average diameter is smaller than that of the copper-based flat raw powder 2. The copper is allowed to segregate at the surface of the sliding part.Type: ApplicationFiled: November 14, 2005Publication date: May 21, 2009Applicant: MITSUBISHI MATERIALS PMG CORPORATIONInventors: Teruo Shimizu, Tsuneo Maruyama
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Patent number: 7534282Abstract: A sintered sputtering target for forming a high purity metal Mo thin film having a remarkably little particle generation is provided. A high purity metal Mo coarse powder as a raw material is provided for making this target. The sintered sputtering target has a theoretical density ratio of 98% or more. The target is obtained by sintering the high purity metal Mo coarse powder. This particle powder has the high purity of 99.99 or more % by mass and an average particle diameter of 5.5 to 7.5 ?m.Type: GrantFiled: September 10, 2004Date of Patent: May 19, 2009Assignee: Japan New Metals Co., Ltd.Inventors: Masayuki Ibaraki, Kenji Iwamoto
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Patent number: 7534391Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.Type: GrantFiled: September 11, 2006Date of Patent: May 19, 2009Assignee: PMG Indiana Corp.Inventors: Juan R. L. Trasorras, Salvator Nigarura
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Patent number: 7524352Abstract: Certain preferred embodiments of the present invention relate to compositions for the production of sintered molded parts, components/parts produced therefrom, and methods for preparing such compositions. In accordance with certain embodiments, compositions for production of sintered molded parts comprise a metal-based, a ceramic-based, and/or a polymer-based powder, and a compaction aid, having 25 to 60 weight percent of a polyglycol, based on the total weight of the compaction aid, and 40 to 75 weight percent of a montan wax, based on the total weight of the compaction aid. The compaction aid may be present in an amount from about 0.1 to 5 weight percent, preferably 0.5 to 1.5 weight percent, based on the total weight of the composition. The composition may also include a lubricant such as, for example, MoS2, WS2, BN, MnS, and/or carbon.Type: GrantFiled: March 24, 2005Date of Patent: April 28, 2009Assignee: GKNM Sinter Metals GmbHInventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
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Patent number: 7504008Abstract: In a method of refurbishing a deposition target, a surface of the target is provided in a process zone. An electrical arc is generated in the process zone, and a consumable metal wire is inserted into the process zone to form liquefied metal. A pressurized gas is injected into the process zone to direct the liquefied metal toward the surface of the target to splatter the liquefied metal on the surface, thereby forming a coating having the metal on at least a portion of the surface of the target that exhibits reduced contamination from the environment.Type: GrantFiled: March 12, 2004Date of Patent: March 17, 2009Assignee: Applied Materials, Inc.Inventors: Trung T. Doan, Kenny King-Tai Ngan
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Publication number: 20090064819Abstract: There is here disclosed an Fe-based sintered alloy produced through a mixing step of mixing an Fe—Mn alloy powder, graphite powder and Fe powder by a mixer (S16), a compacting step of compacting the mixed powder at a predetermined pressure (S18), and a sintering step of sintering the resultant compact in a sintering oven at a predetermined temperature for a predetermined time (S20), the Fe—Mn alloy powder being characterized by containing 2-30 mass % of Mn. In particular, the mixing step (S16) is carried out by mixing 5-50 mass % of the Fe—Mn alloy powder, 0.2-2 mass % of the graphite powder, and the remainder of the Fe powder in the mixer. Consequently, mechanical strength of the Fe-based sintered alloy can be further improved.Type: ApplicationFiled: March 17, 2006Publication date: March 12, 2009Inventors: Kimihiko Ando, Hitoshi Tanino
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Patent number: 7488369Abstract: A magnetostriction device is made such that an impregnated composition material, such as phenol resin, a resin in which an inorganic material such as silica is dispersed into a phenol resin, an epoxy based resin, or an acrylic resin is impregnated and caked into holes of a magnetostrictive sintered material manufactured by a powder metallurgy method. This magnetostriction device has improved mechanical strength against external force.Type: GrantFiled: May 30, 2006Date of Patent: February 10, 2009Assignee: Sony CorporationInventors: Yoshio Ohashi, Masaru Uryu
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Patent number: 7473296Abstract: A wear-resistant iron-based sintered contact material is provided which is sintered by powder sintering so as to have high density, high seizure resistance and wear resistance. A wear-resistant iron-based sintered composite contact component composed of the wear-resistant iron-based sintered contact material sinter-bonded to a backing metal and its producing method are also provided. To this end, at least Cr7C3-type carbide and/or M6C-type carbide which have an average particle diameter of 5 ?m or more are precipitately dispersed in an amount of 20 to 50% by volume within an iron-based martensite parent phase which has a hardness of HRC 50 or more even when tempered at up to 600° C.Type: GrantFiled: September 2, 2005Date of Patent: January 6, 2009Assignee: Komatsu, Ltd.Inventors: Takemori Takayama, Kazuo Okamura, Yoshikiyo Tanaka, Tetsuo Ohnishi
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Patent number: 7473295Abstract: The invention concerns a stainless steel powder comprising at least 10% chromium by weight. The powder further comprises vanadium in an amount of at least 4 times the amount of carbon and nitrogen. Preferably the steel powder comprises 10-30% chromium, 0.1-1% vanadium, 0.5-1.5% silicon, at least 0.1% carbon and at least 0.07% nitrogen. The invention also concerns a powder metallurgical composition containing said steel powder, a process for preparing and a compacted and sintered part made of said composition.Type: GrantFiled: July 1, 2005Date of Patent: January 6, 2009Assignee: Höganäs ABInventors: Owe Mårs, Ricardo Canto Leyton, Ola Bergman
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Publication number: 20080314201Abstract: The present invention provides increased recovery in additive-enhanced or alloy-enhanced molten steel. This is accomplished by dispersing agents blended with the additive alloys. The dispersant powder reacts with the carbon in the steel forming carbon monoxide gas which provides kinetic energy to the additive alloy particle causing dispersion within the molten bath, resulting in greater dissolution of the particles in the molten bath. The alloy or additive region is enriched, thereby improving the recovery in the molten steel.Type: ApplicationFiled: May 19, 2008Publication date: December 25, 2008Inventors: Gregory P. Marzec, Leslie Wade Niemi
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Publication number: 20080314199Abstract: The present invention provides increased recovery in additive-enhanced or alloy-enhanced molten steel. This is accomplished by deoxidizing powders blended with the additive alloys. The deoxidizing powder reacts with the oxygen, thereby depleting the oxygen in this region. The alloy or additive region is enriched, thereby improving the recovery in the molten steel.Type: ApplicationFiled: May 19, 2008Publication date: December 25, 2008Inventors: Leslie Wade Niemi, Gregory P. Marzec
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Publication number: 20080257107Abstract: Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals.Type: ApplicationFiled: April 8, 2008Publication date: October 23, 2008Inventor: Shaiw-Rong Scott Liu
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Patent number: 7438740Abstract: With the object of effective utilization of a fine powder generated during comminution of a crude material for iron manufacture, a briquette is provided which comprises a porous brittle molded body with a bulk specific gravity of 1.5 or more which is obtained by compression molding a molding composition comprising a fine powder generated during comminution of a crude material for iron manufacture and a reinforcing portion for reinforcing the brittle molded body. Further, with the object of effective reuse of used alumina grinding stones, a briquette is provided which comprises a porous brittle molded body obtained by compression molding a molding composition comprising a comminuted powder of a used alumina grinding stone and a cotton-like aggregate comprising a grinding powder of a ferrous metal and a grinding liquid, and a reinforcing portion for reinforcing the brittle molded body.Type: GrantFiled: March 8, 2004Date of Patent: October 21, 2008Assignee: Koyo Seiko Co. Ltd.Inventors: Mitsuma Matsuda, Masafumi Sedou
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Patent number: 7422720Abstract: High density, nontoxic projectiles and other articles, and their methods of manufacture, are disclosed. More particularly, high density nontoxic W—Cu—Ni—Fe alloy compositions, methods of their manufacture and methods by which they may be used as projectiles such as shots, bullets, and pellets and other products traditionally made of lead alloys will be detailed herein in some embodiments. These products have a density comparable to that of lead while avoiding problems of toxicity associated with the use of lead.Type: GrantFiled: May 10, 2005Date of Patent: September 9, 2008Assignee: Spherical Precision, Inc.Inventors: Tim T. Wei, Luguang Tian
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Patent number: 7399334Abstract: High density, nontoxic projectiles and other articles, and their methods of manufacture, are disclosed. More particularly, high density nontoxic W—Cu—Ni—Fe alloy compositions, methods of their manufacture and methods by which they may be used as projectiles such as shots, bullets, and pellets and other products traditionally made of lead alloys will be detailed herein in some embodiments. These products have a density comparable to that of lead while avoiding problems of toxicity associated with the use of lead.Type: GrantFiled: May 10, 2005Date of Patent: July 15, 2008Assignee: Spherical Precision, Inc.Inventors: Tim T. Wei, Luguang Tian
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Patent number: 7390577Abstract: The invention relates to a spray powder for coating a substrate (2), in particular for coating a bearing part (2) of a bearing apparatus, the spraying powder having at least the following composition: carbon=0.1% to 1.5% by weight, manganese=0.1% to 8% by weight, sulphur=0.1% to 2% by weight, copper=0.1% to 12% by weight and iron=the balance in % by weight to 100%.Type: GrantFiled: August 15, 2005Date of Patent: June 24, 2008Assignee: Sulzer Metco AGInventor: Gérard Barbezat
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Patent number: 7384445Abstract: The invention concerns a sintered metal part which has a densified surface and sintered density of at least 7.35 g/cm3 and a core structure distinguished by a pore structure obtained by single pressing to at least 7.35 g/cm3 and single sintering of a mixture of a coarse iron or iron-based powder and optional additives.Type: GrantFiled: April 19, 2005Date of Patent: June 10, 2008Assignee: Höganäs ABInventors: Paul Skoglund, Mikhail Kejzelman, Anders Bergmark