Plural Nonparticulate Metal Components Patents (Class 428/554)
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Patent number: 11298774Abstract: A method of eliminating dissimilar metal welds has been disclosed. The method includes the steps of providing a first part having a first alloy composition; providing a second part having a second alloy composition different from the first part; connecting a containment structure to the first part; pouring a powder into the containment structure such that the powder is in contact with the first part; positioning a portion of the second part in the containment structure such that the second part compresses the powder between the first and second parts; and performing hot isostatic pressing (HIP) to consolidate the powder and join the first and second parts together.Type: GrantFiled: March 30, 2017Date of Patent: April 12, 2022Assignee: Electric Power Research Institute, Inc.Inventors: Benjamin Sutton, David Wayne Gandy
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Patent number: 10940664Abstract: Disclosed is an antibacterial product including at least one antibacterial part, wherein the antibacterial part includes a surface layer containing silver sintered under a nitrogen atmosphere or silver oxide sintered under an oxygen atmosphere. The antibacterial product prevents the proliferation of bacteria arising due to use thereof, kills bacteria, sterilizes and purifies contaminated water, and exhibits an antibacterial effect against harmful bacteria within at most 6 hr, and preferably an early antibacterial effect within 3 hr, especially 2 hr.Type: GrantFiled: September 13, 2019Date of Patent: March 9, 2021Inventors: Akiko Hirai, Akira Hirai
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Patent number: 10688498Abstract: A beater wheel for a pulverizer mill is provided. The beater wheel includes a rotatable hub disc having apertures defined therethrough and a ring disc having respective apertures defined therethrough, and a plurality of tubular ribs, disposed therebetween and weldingly coupled thereto at a tubular first end to the hub disc and at a tubular second end to the ring disc to define respective weld joints thereat. Each respective aperture in the hub disc and ring disc are sized and disposed to allow direct access therethrough to at least one respective weld joint at the respective interior surface of the first and second tubular ends for inspection and testing.Type: GrantFiled: November 14, 2017Date of Patent: June 23, 2020Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Friedemann Kendel, Tim Buhl, Steven Michael Stannard
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Patent number: 10239097Abstract: The present invention relates to a method and an associated apparatus (1) for the recovery and regeneration of metal powder in EBM (Electron Beam Melting) applications. The method is of the type which envisages a step for recovery of weakly sintered powders inside a cleaning chamber (2) incorporating at least one compressed-air nozzle with supply, where necessary, of powder for sandblasting three-dimensional objects obtained by means of EBM sintering of the metal powders; according to the invention it is envisaged supplying into the cleaning chamber (2) metal powders having a predetermined low oxygen content and there is also a powder recirculating system (3) comprising at least one first buffer tank (9) inside which the regenerated powders are deposited for renewed supply of the aforementioned chamber (2).Type: GrantFiled: July 31, 2014Date of Patent: March 26, 2019Assignee: Limacorporate S.P.A.Inventors: Michele Pressacco, Marco Regis
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Patent number: 9209044Abstract: Provided are a metal-resin composite having excellent adhesive strength, a method for producing the same, a busbar, a module case, and a resinous connector part. The metal-resin composite comprises a metallic member 1 including a metal with a high melting point of 500° C. or more, a resin member 2 being integrated with the metallic member 1; and an alloy layer 3 including a metal with a low melting point lower than 500° C. The alloy layer 3 is arranged between the metallic member 1 and the resin member 2, and has average surface roughness thereof in the range from 5 nm or more to less than 1 ?m at the interface between the alloy layer 3 and the resin member 2. Herein, a period of the unevenness formed on the interface of the alloy layer 3 is in the range from 5 nm or more to less than 1 ?m.Type: GrantFiled: December 1, 2011Date of Patent: December 8, 2015Assignee: HITACHI, LTD.Inventors: Ryoichi Kajiwara, Shigehisa Motowaki, Yusuke Asaumi
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Patent number: 9040428Abstract: Hemispheres and spheres are formed and employed for a plurality of applications. Hemispheres are employed to form a substrate having an upper surface and a lower surface. The upper surface includes peaks of pillars which have a base attached to the lower surface. The peaks have a density defined at the upper surface by an array of hemispherical metal structures that act as a mask during an etch to remove substrate material down to the lower surface during formation of the pillars. The pillars are dense and uniform and include a microscale average diameter. The spheres are formed as independent metal spheres or nanoparticles for other applications.Type: GrantFiled: September 7, 2012Date of Patent: May 26, 2015Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Augustin J. Hong, Woo-Shik Jung, Jeehwan Kim, Jae-Woong Nahum, Devendra K. Sadana
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Publication number: 20150104666Abstract: A metal-based composite material which has a sufficient radiation absorption function, also has excellent strength, corrosion resistance, processability, impact resistance and heat conductivity, and is inexpensive. A metal-based composite material having such a double-clad structure that a core material is sandwiched between a pair of skin materials each composed of an aluminum plate in such a manner that the core material is closely adhered to the skin materials, wherein the core material comprises a matrix produced by consolidating an aluminum powder by applying a pressure and tungsten particles dispersed in the matrix, and wherein the tungsten particles are contained in the core material in an amount of 5 to 70 vol %. A method for producing a metal-based composite material, which comprises filling a mixed powder of an aluminum powder that constitutes a matrix and tungsten particles into an aluminum case and then extending the mixed powder by applying a pressure.Type: ApplicationFiled: August 30, 2013Publication date: April 16, 2015Applicants: Nikkeikin Aluminum Core Technology Co., Ltd., Nippon Light Metal Company, Ltd.Inventors: Yusuke Kamimura, Shingo Koizumi, Masaki Iino, Kazuto Sandra
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Publication number: 20140205851Abstract: An interconnect structure for electrically joining two surfaces includes magnetic attachment structures and an anisotropic conductive adhesive (ACA). Magnetic attachment structures on a first surface are magnetically attracted to magnetic attachment structures on a second surface. Opposing magnetic attachment structures are joined via an ACA, which conducts electricity when compressed, and is electrically insulating when not compressed. The magnetic attraction between opposing magnetic attachment structures generates a sufficient force to maintain compression of the intervening ACA in order to sustain a desired level of electrical conductivity between the first surface and second surface. A method for joining two surfaces using the interconnect structure is disclosed. Additionally, a magnetic anisotropic conductive adhesive having magnetic conductive particles dispersed therein is disclosed.Type: ApplicationFiled: January 23, 2013Publication date: July 24, 2014Inventors: Ravindranath V. MAHAJAN, Aleksandar ALEKSOV, Debendra MALLIK, Ian A. YOUNG, Rajasekaran SWAMINATHAN, Sairam AGRAHARAM, John S. GUZEK
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Publication number: 20140099514Abstract: A continuous hot bonding method for producing a bi-material strip with a strong bond therebetween is provided. The method comprises sanding a first strip formed of steel; and applying a layer of first particles, typically formed of copper, to the sanded first strip. The method next includes heating the first strip and the layer of the first particles, followed by pressing a second strip formed of an aluminum alloy onto the heated layer of the first particles. The aluminum alloy of the second strip includes tin particles, and the heat causes the second particles to liquefy and dissolve into the melted first particles. The first particles and the second particles bond together to form bond enhancing metal particles, which typically comprise bronze.Type: ApplicationFiled: October 10, 2013Publication date: April 10, 2014Applicant: Federal-Mogul CorporationInventor: David Michael Saxton
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Publication number: 20130236734Abstract: A metal foil including: a steel layer whose thickness is 10 to 200 ?m; an Al-containing metal layer arranged on the steel layer; and plural granular alloys which exist in an interface between the steel layer and the Al-containing metal layer, wherein, when a cutting-plane line of a surface of the Al-containing metal layer is defined as a contour curve and an approximation straight line of the contour curve is defined as a contour average straight line, a maximum point, whose distance from the contour average straight line is more than 10 ?m, is absent on the contour curve, and wherein, when an equivalent sphere diameter of the granular alloys is x in units of ?m and a thickness of the Al-containing metal layer is T in units of ?m, the granular alloys satisfy x?0.5T.Type: ApplicationFiled: November 16, 2011Publication date: September 12, 2013Inventors: Takayuki Kobayashi, Shinichi Terashima, Masamoto Tanaka, Masami Fujishima, Masao Kurosaki, Jun Maki, Hideaki Suda, Shuji Nagasaki
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Publication number: 20130216848Abstract: The present invention relates to a starting material for producing a sintered join. In order to avoid the formation of cracks in the case of fluctuating thermal loading, the starting material comprises second particles 20, in addition to metallic first particles 10, which at least proportionately contain elemental silicon and/or silicon dioxide. In addition, the present invention relates to the use of elemental silicon and/or silicon dioxide for reducing the coefficient of thermal linear expansion ? of a starting material 100 of a sintered join 100? or of a sintered join 100?, in particular in a sintered paste, a sintered powder or a sintered material preform. Furthermore, the present invention relates to sintered joins 100?, to electronic circuits 70 and also to processes for forming a thermally and/or electrically conductive sintered join.Type: ApplicationFiled: March 29, 2011Publication date: August 22, 2013Applicant: ROBERT BOSCH GMBHInventors: Thomas Kalich, Daniel Wolde-Giorgis, Andrea Feiock, Robert Kolb
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Publication number: 20130157072Abstract: There are provided a sliding member that is enhanced in adhesiveness between the surface of a base member formed of aluminum or aluminum alloy and silver coating with a simple construction, and a method of manufacturing the sliding member. In a piston 1 having a sliding face 22 which slides in a cylinder bore 3, a silver coating layer 21 constituting the sliding face 22 is provided on the outer peripheral surface 11 of a main body 10 formed of aluminum alloy, and the silver coating layer 21 is formed by coating slurry having silver particles 23 dispersed in terpineol on the outer peripheral surface 11 of the main body 10 and heating the coated slurry and the main body 10 to remove terpineol in the slurry and fuse the silver particles 23 with one another.Type: ApplicationFiled: July 26, 2011Publication date: June 20, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Ryotaro Takada, Yoshitaka Tsujii, Mayumi Saruyama
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Patent number: 8354158Abstract: A microfibrous article includes a substrate and a plurality of magnetic fibers disposed on the substrate. Each of the plurality of magnetic fibers is individually sheathed with a polymer and includes a plurality of magnetic particles. Further, each of the plurality of magnetic fibers is aligned along a magnetic field and not connected by the polymer to any adjacent magnetic fiber. A method of forming the microfibrous article is also disclosed.Type: GrantFiled: September 1, 2010Date of Patent: January 15, 2013Assignee: GM Global Technology Operations LLCInventors: Tao Xie, Hamid G. Kia, Man Zhang, John C. Ulicny
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Publication number: 20120282481Abstract: Disclosed is a sliding member (11) that has a base section (12) and an overlay layer (13) provided on the base section (12). The overlay layer (13) has Bi or a Bi alloy as the base, and contains Sn or an Sn alloy. The average particle size of Sn-based particles (15) distributed within the overlay layer (13) is no more than 5% of the average particle size of Bi-based particles (14) distributed within the overlay layer (13).Type: ApplicationFiled: February 4, 2011Publication date: November 8, 2012Inventors: Mikihito Yasui, Satoshi Takayanagi, Hiroyuki Asakura
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Publication number: 20120237785Abstract: Forming an implantable component assembly by bonding a stainless steel part to a titanium part by heating a component assembly comprised of the titanium part, the stainless steel part, and a compact filler layer of titanium-nickel particulate material placed between the two parts and heated at a temperature that is less than the melting point of either the stainless steel part or the titanium part. The component assembly is held in intimate contact at temperature in a non-reactive atmosphere for a sufficient time to develop a hermetic and strong bond between the stainless steel part and the titanium part. The bonded component assembly is optionally treated with acid to remove any residual free nickel and nickel salts, to assure a biocompatible component assembly, when implanted in a human body.Type: ApplicationFiled: April 18, 2012Publication date: September 20, 2012Applicant: ALFRED E. MANN FOUNDATION FOR SCIENTIFIC RESEARCHInventors: GUANGQIANG JIANG, ATTILA ANTALFY
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Publication number: 20110284262Abstract: An anisotropic conductive adhesive (ACA) arrangement is disclosed, including a thermosetting resin disposed between a connector of a first structure and a connector of a second structure, and a plurality of ferromagnetic conductive particles dispersed through the thermosetting resin, wherein the plurality of ferromagnetic conductive particles form columns between the connector of the first structure and the connector of the second structure, and wherein a density of the ferromagnetic particles in the columns is substantially higher than a density of the plurality of ferromagnetic particles away from the columns.Type: ApplicationFiled: May 23, 2011Publication date: November 24, 2011Applicant: PURDUE RESEARCH FOUNDATIONInventors: William J. Chappell, Sungwook Moon, Nestor A. Rojas, Maria Bellorin
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Publication number: 20100047605Abstract: The invention relates to a sliding bearing comprising a back metal layer, a bearing layer applied to the back metal layer, at least one intermediate layer applied to the bearing layer and an overlay applied to the at least one intermediate layer, wherein the overlay consists of a tin matrix and a silver-tin intermetallic phase distributed in the tin matrix, wherein the silver-tin intermetallic phase is distributed homogeneously in the tin matrix and wherein the silver-tin intermetallic phase consists of particles, most of them, preferably more than 99% of them having a particle size ?1 micron.Type: ApplicationFiled: December 19, 2006Publication date: February 25, 2010Inventors: Christiane Knoblauch, Jose Valentim Lima Sarabanda
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Publication number: 20100028705Abstract: A tube joint (16) for joining dissimilar metal sections (12, 14) of a superheater or reheater tube (10) is formed using a hot isostatic press process. A first end of the tube joint (16) is formed from a first metal which has substantially the same chemical composition as that of one section (12) of the superheater or reheater tube (10), and a second end of the tube joint is formed from a second metal which has substantially the same chemical composition as a metal used to form the other section (14) of the superheater or reheater tube (10). Because the ends of the tube joint (16) are made of substantially the same metal as the respective tube sections (12, 14) to which they attach, the welds (18) may be performed using a standard fusion welding process, such as arc welding, and the need for dissimilar metal welding is eliminated.Type: ApplicationFiled: October 14, 2009Publication date: February 4, 2010Applicant: ALSTOM Technology LtdInventor: William A. Keegan
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Publication number: 20090220814Abstract: A metal matrix composite material comprising a pair of metal plates having a powder mixture disposed therebetween forming an intermediate layer is disclosed. The powder mixture includes a metal powder and a ceramic powder. The ceramic powder has a neutron absorbing function and includes a B4C powder. The intermediate layer has a theoretical density ratio at least 98%, and a percentage of a total thickness of the metal plates to an overall thickness of the intermediate layer is in a range of 15 to 25% and the ceramic powder has a neutron absorption rate of at least 90%.Type: ApplicationFiled: April 22, 2009Publication date: September 3, 2009Inventors: Toshimasa Nishiyama, Takutoshi Kondou, Hideki Ishii, Kazuto Sanada, Toshiaki Yamazaki
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Publication number: 20080160332Abstract: A method for manufacturing a brazed part is disclosed that includes coating a substrate surface to be joined by first cold spraying a braze filler metal powder upon the surface to clean the surface followed by further spray the powder to form a coating layer of a braze alloy upon the surface. The coated surface is assembled with another surface to be joined and brazed together to form the brazed part. The substrate and braze alloy may be nickel-based super alloy materials.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Manish DIGHE, Jeffrey Reid THYSSEN
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Patent number: 6991856Abstract: Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil is preferably a freestanding multilayered foil structure made up of alternating layers selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually any environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt or soften the joining material, which upon cooling will form a strong bond, joining two or more bulk materials.Type: GrantFiled: September 20, 2002Date of Patent: January 31, 2006Assignee: Johns Hopkins UniversityInventors: Timothy P. Weihs, Michael Reiss, Omar Knio, Albert Joseph Swiston, Jr., David van Heerden, Todd Hufnagel
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Patent number: 6783798Abstract: Thin, flexible composite materials, which are magnetic or magnetizable and processes for producing and using the materials. The composite material contains a laminate formed from a mixture of magnetic or magnetizable particles, binder particles (and optionally active particles), applied to and fused and/or coalesced with a first substrate. The composite preferably contains an additional second substrate fused to and/or coalesced with, the laminate on the side of the laminate opposite that of the first substrate.Type: GrantFiled: June 6, 2003Date of Patent: August 31, 2004Assignee: Koslow Technologies CorporationInventor: Evan E. Koslow
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Patent number: 6767649Abstract: A rotor (10) for a turbomachine, comprising at least one first, preferably disk-like rotor section (12), which is exposed to high operating temperatures and consists of a particularly creep-resistant material, in particular a nickel-based alloy, and at least one second, preferably disk-like rotor section (11), which is exposed to lower operating temperatures and consists of a less creep-resistant material, in particular steel, the first and second rotor sections (11, 12) being joined to one another by welding. In a rotor of this type, a crack-free welded joint is achieved by the fact that, to join the two rotor sections (11, 12), a transition region (13) is arranged between the two rotor sections (11, 12), which transition region is produced by powder metallurgy, is welded to one of the two rotor sections (11, 12) at least on one side, and on this side has the same composition as the rotor section to which it is welded.Type: GrantFiled: March 20, 2002Date of Patent: July 27, 2004Assignee: Alstom Technology LTDInventors: Markus Staubli, Hans Wettstein
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Patent number: 6753093Abstract: A heat spreader includes an electromagnetic soft iron sheet and a plating layer formed on the surface of the sheet. The plate is made of a rustproof metal. An electronic component is mounted on an aluminum base with an HITT substrate and the heat spreader in between. The heat spreader is manufactured at low cost and has a favorable property as a heat dissipating material.Type: GrantFiled: September 20, 2002Date of Patent: June 22, 2004Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Katsufumi Tanaka, Kyoichi Kinoshita, Takashi Yoshida, Tomohei Sugiyama, Eiji Kono
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Patent number: 6666994Abstract: The present invention provides a conductive adhesive and a packaging structure that can keep moisture-proof reliability even when a multipurpose base metal electrode is used. A conductive adhesive according to the present invention includes first particles having a standard electrode potential that is equal to or higher than a standard electrode potential of silver, and second particles having a standard electrode potential lower than a standard electrode potential of silver. A metal compound coating having a potential higher than that of metal particles as the first particles can be formed on a surface of an electrode having a potential lower than that of the metal particles.Type: GrantFiled: December 3, 2002Date of Patent: December 23, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Takezawa, Takashi Kitae, Yukihiro Ishimaru, Tsutomu Mitani, Tousaku Nishiyama
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Publication number: 20030206818Abstract: A clad article of a substrate of one powdered metal that is clad with a second dissimilar powdered metal. A separation layer may be provided between the substrate and the clad layer to separate these layers during consolidation and to facilitate bonding thereof. The consolidation operation may be performed by hot isostatic pressing of the powders within a deformable container.Type: ApplicationFiled: June 10, 2003Publication date: November 6, 2003Applicant: Crucible Materials Corp.Inventors: Frank J. Rizzo, Brian A. Hann, Joseph F. Perez
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Patent number: 6534194Abstract: In accordance with the invention a reactive multilayer foil is fabricated by providing an assembly (stack or multilayer) of reactive layers, inserting the assembly into a jacket, deforming the jacketed assembly to reduce its cross sectional area, flattening the jacketed assembly into a sheet, and then removing the jacket. Advantageously, the assembly is wound into a cylinder before insertion into the jacket, and the jacketed assembly is cooled to a temperature below 100° C. during deforming. The resulting multilayer foil is advantageous as a freestanding reactive foil for use in bonding, ignition or propulsion.Type: GrantFiled: May 1, 2001Date of Patent: March 18, 2003Assignee: Johns Hopkins UniversityInventors: Timothy P. Weihs, Michael Reiss
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Patent number: 6524721Abstract: The present invention provides a conductive adhesive and a packaging structure that can keep moisture-proof reliability even when a multipurpose base metal electrode is used. A conductive adhesive according to the present invention includes first particles having a standard electrode potential that is equal to or higher than a standard electrode potential of silver, and second particles having a standard electrode potential lower than a standard electrode potential of silver. A metal compound coating having a potential higher than that of metal particles as the first particles can be formed on a surface of an electrode having a potential lower than that of the metal particles.Type: GrantFiled: July 3, 2001Date of Patent: February 25, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Takezawa, Takashi Kitae, Yukihiro Ishimaru, Tsutomu Mitani, Tousaku Nishiyama
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Publication number: 20030035975Abstract: An adhesive composition is provided for bonding two or more different members which can give a bonded material having excellent heat resistance characteristics while inhibiting breakage of the materials to be bonded by reducing the expansion coefficient, the Young's modulus and the proof stress value. A method for bonding two or more different members using the adhesive composition, and a composite member comprising two or more different members bonded by the above method can be provided by the adhesive composition which comprises a hard solder and a mixture of at least two fine particle materials differing in wettability with the hard solder and which is controlled in expansion coefficient, Young's modulus and proof stress value.Type: ApplicationFiled: June 24, 2002Publication date: February 20, 2003Applicant: NGK Insulators, Ltd.Inventors: Masayuki Shinkai, Masahiro Kida
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Patent number: 6444330Abstract: A sandwich component, which comprises at least two massive metallic sheet metal parts located opposite one another and a metal powder layer to be expanded, which is arranged between the sheet metal parts, is shown, in which the sandwich component has additional reinforcing elements in individual cross-sectional areas, and the said reinforcing elements are connected in a positive-locking manner to the expanded metal powder layer surrounding same, and the said metal powder layer is in turn connected to the outer, massive metallic sheet metal parts in such a way that it cannot be detached without destruction.Type: GrantFiled: December 12, 2000Date of Patent: September 3, 2002Assignee: ZF Lemförder Metallwaren AGInventor: Olaf Abels
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Patent number: 6426154Abstract: The present invention provides a ceramic circuit board comprising: a ceramic substrate and a metal circuit plate bonded to the ceramic substrate through a brazing material layer; wherein the brazing material layer is composed of Al—Si group brazing material and an amount of Si contained in the brazing material is 7 wt % or less. In addition, it is preferable to form a thinned portion, holes, or grooves to outer peripheral portion of the metal circuit plate. According to the above structure of the present invention, there can be provided a ceramic circuit board having both high bonding strength and high heat-cycle resistance, and capable of increasing an operating reliability as electronic device.Type: GrantFiled: September 25, 2000Date of Patent: July 30, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Takayuki Naba, Hiroshi Komorita, Noritaka Nakayama, Kiyoshi Iyogi
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Publication number: 20010055694Abstract: A high strength spongy sintered metal composite sheet comprising a porous spongy sintered metal layer having continuous holes, and a high strength sintered, dense metal reinforcing layer having a porosity smaller than the porosity of the spongy sintered metal layer, laminated thereon, wherein the sintered, dense metal reinforcing layer has a thickness of 0.5-30% thickness with respect to the entire high strength spongy sintered metal composite sheet.Type: ApplicationFiled: April 8, 1999Publication date: December 27, 2001Inventors: MASAHIRO WADA, YOSHITAKA MAYUZUMI, KOJI HOSHINO, SABUROU WAKITA
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Patent number: 5963778Abstract: A preferred method for producing a pair of sputter targets includes the step of machining fist and second backing plates to form surfaces having near net profiles characteristic of an ion source, the sputtering material and the target shape. A preform is constructed which includes the first backing plate, a first powder layer abutting against the first backing plate, a spacer abutting against the first powder layer, a second powder layer abutting against the spacer, and the second backing plate abutting against the second powder layer. In an especially preferred form, the spacer comprises a pair of metal plates separated by a layer of bond-resistant material such as boron nitride. The preform is heated and isostatically pressed to consolidate the powder layers to form the pair of sputter targets and to diffusion bond the targets to corresponding backing plates. The method promotes the formation of uniformly even sputtering surfaces on the targets.Type: GrantFiled: August 26, 1998Date of Patent: October 5, 1999Assignee: Tosoh SMD, Inc.Inventor: David E. Stellrecht
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Patent number: 5875830Abstract: Metallic articles having heat transfer channels are produced by solidification of molten metallic material about pre-formed channel defining members such that a solidified metallic deposit having heat transfer channels is formed. The channel defining members may be in the form of either solid elements (which are subsequently removed to leave the channels), or conduit elements (which may remain permanently embedded in the article). Moulds, dies, cores and other tools for use in moulding or casting of plastics and metals are particularly suitably formed by the process, the heat transfer channels being used for cooling of the respective articles during use. The molten metallic material is preferably deposited by spray forming utilizing one or more sprays of molten metallic material.Type: GrantFiled: July 8, 1996Date of Patent: March 2, 1999Assignee: Sprayforming Developments LimitedInventors: Alfred Richard Eric Singer, Richard Michael Jordan, Allen Dennis Roche
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Patent number: 5812925Abstract: A method for joining a first metal surface to a second metal surface that includes providing powder metal particles substantially all of which have hardnesses lower than the hardnesses of the first and second metal surfaces, at normal temperatures; locating the particles in a layer between the first and second metallic surfaces, to form an assembly; heating the assembly to an elevated temperature or temperatures below the softening temperature of the first and second metallic surfaces; and effecting compression of the layer by and between the first and second surfaces at a pressure level or levels below the compressive yield strengths of the first and second surfaces, and above the compressive yield strengths of the particles, and for a time duration to effect a bond between the first and second metallic surfaces.Type: GrantFiled: October 23, 1996Date of Patent: September 22, 1998Inventor: Gunes M. Ecer
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Patent number: 5780164Abstract: A hard drive disk substrate is formed of a multi-phase ceramic-based material having at least two phases with amorphous phases being present in an amount less than about 1 volume percent based on the volume of the ceramic-based material or at least one phase being free metal. A process for producing the ceramic-based disk substrate is produced by forming a flat disk of a porous ceramic and then infiltrating the porous ceramic with a metal whereby a multi-phase ceramic-based computer hard drive disk is produced. Additionally, a step of passivating the porous ceramic by elevating it to a temperature of about 1300.degree. to about 1800.degree. C. before the infiltrating step may be performed, such that the surfaces are passivated and the reaction kinetics can be controlled during the infiltrating step. A preferred composite material is made of a multi-phase boron carbide composite material including grains having peaks with an average roughness value, Ra, of between about 1 to about 200 .ANG.Type: GrantFiled: June 29, 1995Date of Patent: July 14, 1998Assignee: The Dow Chemical CompanyInventors: Aleksander J. Pyzik, Uday V. Deshmukh, Chan Han, Kevin J. Nilsen, Donald J. Perettie, Arthur R. Prunier, Jr.
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Patent number: 5740515Abstract: An article of manufacture which is subject to erosive and corrosive attack in a high-temperature environment is formed of a substrate of nickel or cobalt-based superalloy, and a protective silicide coating disposed on the substrate. A thermal barrier layer of ceramic may be disposed between the superalloy and the silicide layer, and an MCrAlY layer may be disposed between the ceramic and the superalloy substrate. The silicide coating is preferably MoSi.sub.2.Type: GrantFiled: April 6, 1995Date of Patent: April 14, 1998Assignee: Siemens AktiengesellschaftInventor: Wolfram Beele
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Patent number: 5672435Abstract: Hard disk drive components, such as, sliders, load beams, support arms, actuators, actuator bearings, spacers, clamps, spindles, ball bearings, thrust bearings, journal bearings, base plates, housings, and covers, formed of a multi-phase ceramic-based material. One method of making the hard disk drive components includes (a) forming a porous body of ceramic; (b) infiltrating a liquid into the pores of the ceramic body; (c) solidifying the infiltrated liquid; and (d) machining the metal-infiltrated ceramic body to form the hard disk drive component.Type: GrantFiled: June 29, 1995Date of Patent: September 30, 1997Assignee: The Dow Chemical CompanyInventors: David W. Born, Uday V. Deshmukh, Timothy G. Fawcett, Richard T. Fox, Kevin J. Nilsen, Aleksander J. Pyzik
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Patent number: 5643683Abstract: A wet type sliding apparatus in which a multilayer sliding member is used in the presence of a lubricating oil, characterized in that the multilayer sliding member is composed of (1) a backing metal layer, (2) a porous, sintered layer provided thereon and (3) a surface layer consisting essentially of polyetheretherketone formed by impregnating and coating the porous, sintered layer with a sliding resin consisting essentially of polyetheretherketone. The above sliding member has a small friction coefficient and excellent wear resistance. In particular, the sliding noise can be more effectively inhibited by adjusting the face roughness of the surface layer of the sliding member to 2 .mu.m or less.Type: GrantFiled: January 24, 1996Date of Patent: July 1, 1997Assignee: Daido Metal Company Ltd.Inventors: Tadashi Tanaka, Hidehiko Tamura, Takahiro Niwa, Izumi Maruyama, Yoshihiro Fukutani
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Patent number: 5634189Abstract: A structural component is formed with an outer shell of sintered, solid, powder particles, and a porous core of sintered, hollow, bodies arranged in layers. The hollow bodies are of increased diameter in the layers in a direction from the outer periphery of the core towards the center of the core. The material of the outer shell and of the core is a metal or ceramic.Type: GrantFiled: November 14, 1994Date of Patent: May 27, 1997Assignee: Mtu Motoren-Und Turbinen Union Munchen GmbHInventors: Axel Rossmann, Wilfried Smarsly
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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: 5564064Abstract: A method for forming a gas-filled consolidated metal billet, involving preparing a metallic shell container, filling the shell with a metal core material and pressurized gas, and consolidating the shell and its contents to form the billet. The consolidated billet is further formed in the same manner as solid metal components by conventional wrought mill working technologies. After thus forming a shaped billet having a predetermined, desired geometry, it is subjected to a heat treatment that expands the gas trapped within the core, to produce in situ a metal body having an integral sandwich-type structure with a solid metal facing and a porous metal core.Type: GrantFiled: February 3, 1995Date of Patent: October 8, 1996Assignee: McDonnell Douglas CorporationInventor: Ricky L. Martin
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Patent number: 5510193Abstract: Metal carbide supported polycrystalline diamond (PCD) compacts having improved shear strength and impact resistance properties, and a method for making the same under high temperature/high pressure (HT/HP) processing conditions. A sintered polycrystalline cubic boron nitrite (PCBN) compact interlayer is provided to be bonded at a first interface to a sintered PCD compact layer, and at a second interface to a cemented metal carbide support layer comprising particles of a metal carbide in a binder metal. The supported compact is characterized as having a substantially uniform sweep through of the binder metal from the cemented metal carbide support layer, which sweep through bonds the sintered PCD compact layer to the sintered PCBN interlayer, and the sintered PCBN interlayer to the cemented metal carbide support layer.Type: GrantFiled: October 13, 1994Date of Patent: April 23, 1996Assignee: General Electric CompanyInventors: David B. Cerutti, Henry S. Marek
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Patent number: 5506061Abstract: A method for preparing deagglomerated fibres and/or particles and for providing the fibres and/or particles with a substantially uniform protective coating, the fibres and/or particles being of a material selected from the group consisting of carbides oxides, nitrides, silicides, borides, metals and graphite, including SiC, TiC, ZrC, WC, NbC, AlN, TiN, BN, Si.sub.3 N.sub.4, MgO, Al.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, Y.sub.2 O.sub.3, steel, tungsten, molybdenum and carbon, the method comprising (a) preparing an inorganic colloid sol, and (b) mixing the fibres and/or particles are deagglomerated and substantially homogeneously distributed. The fibres and/or particles, e.g. SiC whiskers provided with an aluminum oxide coating by treatment with an aluminum hydroxide-based sol, are used for the preparation of metal matrix composite materials, e.g. based on aluminum or an aluminum alloy.Type: GrantFiled: January 21, 1992Date of Patent: April 9, 1996Assignee: Forskningscenter RisoInventors: Bruno Kindl, Yi-Lin Liu, Niels Hansen
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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
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Patent number: 5422190Abstract: The present invention provides a new and useful via fill paste for use in the construction of electronic circuit devices. The unique via fill paste is capable of electrically connecting conductive layers made of dissimilar metals such as gold and silver. The via fill paste includes gold, silver, palladium and a refractory oxide. The refractory oxide comprises one or more metals selected from the group consisting of zirconium, yttrium, niobium, tantalum, lanthanum, thorium, hafnium, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.Type: GrantFiled: January 22, 1993Date of Patent: June 6, 1995Assignee: Ferro CorporationInventor: John H. Alexander
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Patent number: 5418072Abstract: A consumable brazing encapsulate is used for joining aluminum to metal surfaces, e.g. aluminum, copper, brass or steel surfaces, by brazing. The encapsulate comprises a mixture of particles of an eutectic forming metal selected from the group consisting of silicon, germanium, copper and zinc and particles of a brazing flux encapsulated in a layer or layers of aluminum or its alloys, said eutectic forming metal and flux being present in the following parts by weight per 100 parts by weight of the total aluminum in the encapsulate: (a) 7 to 15 parts of silicon and 7 to 45 parts of flux; (b) 25 to 120 parts of germanium and 100 to 250 parts of flux; (c) 40 to 70 parts of copper and 20 to 100 parts of flux; (d) 1300 to 2400 parts of zinc and 1000 to 2000 parts of flux; such that when the encapsulate is placed between aluminum surfaces to be joined and is heated, the eutectic forming metal and the encapsulating aluminum are totally converted in situ into an eutectic filler metal for joining the aluminum surfaces.Type: GrantFiled: September 20, 1993Date of Patent: May 23, 1995Assignee: Alcan International LimitedInventors: Antonio Baldantoni, Roland S. Timsit
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Patent number: 5387471Abstract: A coating for a part made of a nickel alloy of the following type: Cr: 15% to 20%, Co: 8% to 20%, Mo: 1.5% to 4%, Ti: 3% to 5%, Al: 3% to 3.5%, W: .ltoreq.3.8%, Fe: .ltoreq.1.2%, Nb: .ltoreq.0.9%, C: .ltoreq.0.1%, B: .ltoreq.0.01%, and Ta: .ltoreq.2.8%, the remainder being Ni, the coating having hardness of about 400 HV and including a plurality of layers (5', 5") of a wear-resistant cobalt-containing material of the following type: C: <1%, Cr: 26% to 30%, W: 18% to 21%, Ni: 4% to 6%, V: 0.75% to 1.15%, Fe: .ltoreq.3%, Mn .ltoreq.1%, Si: .ltoreq.1%, and B: .ltoreq.0.05%, the remainder being Co, said coating being characterized in that a buffer layer (5) is disposed between the part and the cobalt-containing layers (5', 5"), which buffer layer is made from a pre-alloyed powder having the following composition: Si: 0.7% to 2.9%, Cr: 11% to 26%, Fe: 0.5% to 3%, C: 0.35% to 0.85%, B: 0.3% to 1.35%, Ni: 20% to 69%, W: 3.6% to 16.8%, Mn .ltoreq.0.8%, and Co: 7% to 41.5%.Type: GrantFiled: August 26, 1993Date of Patent: February 7, 1995Assignee: European Gas Turbines SAInventors: Emmanuel Kerrand, Vincent Le Castrec, Didier Boucachard
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Patent number: 5384201Abstract: A carrier material for a tool for treating surfaces is composed of a metal alloy with a homogeneous, fine-grained structure. The carrier material is treated in a material removing manner to obtain a predetermined size and a roughness. Then an activating layer, a pure metal layer and a transition layer composed for example from nitrogen are applied, so that the outermost region of the tool contains a non-metallic hard layer. The non-metallic hard layer has a high hardness and elasticity so that the tool is suitable especially for treating surfaces of structural parts.Type: GrantFiled: March 18, 1993Date of Patent: January 24, 1995Assignee: Robert Bosch GmbHInventors: Ludwig Finkbeiner, Manfred Wilhelm
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Patent number: H1448Abstract: A high precision transfer lamination plate/mandrel is fabricated in a sanch construction design wherein an inner core is constructed of a low coefficient of thermal expansion (CTE) comprised of an iron-nickel alloy core member (e.g., Kovar or Invar) with stainless steel cladding on each side of the core member. The stainless steel is selected from AISI type 302, 304, or 316. The stainless steel cladding outer surface of the top and bottom plate to which an electroplated copper foil circuitry is applied must be free of pits, scratches, and defects so as to yield a continuous circuitry satisfactory for military electronics. A matched (CTE) of the transfer lamination plate/mandrel with a composite material to which the electronic circuitry is transferred results in adherence of the copper circuitry minimally to the plate/mandrel to avoid blistering and enables the transfer to be achieved without distortion of circuitry features due to CTE mismatch.Type: GrantFiled: August 24, 1992Date of Patent: June 6, 1995Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Herbert S. Goode, Jr.