Nonparticulate Metal Component Patents (Class 428/553)
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Patent number: 5447774Abstract: There is disclosed a composite slide member which suppresses the exposure of a porous metal layer even when the amount of cutting from a surface of the slide member increases, thereby enhancing an anti-seizing property without adversely affecting a rear resistance. The composite slide member includes a back plate, and a slide layer including a porous metal layer with a porosity of 50% to 80% and a composite synthetic resin composition impregnated and coated in pores of the porous metal layer. The porous metal layer is joined to a surface of the back plate. The porous metal layer is formed by sintering metal powder without applying pressure thereto, and an apparent density of the metal powder is 20% to 40% of its theoretical density. The porous metal and the composite synthetic resin are dispersed on a sliding surface of the slide layer in a substantially mixed condition.Type: GrantFiled: January 13, 1993Date of Patent: September 5, 1995Assignee: Daido Metal Company, Ltd.Inventors: Tadashi Tanaka, Hidehiko Tamura, Shigemasa Hakakoshi, Takahiro Niwa
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Patent number: 5443916Abstract: A method for impregnating a metal product with a hard wear-resistant surface area comprises providing a wear-resistant layer in the form of a sintered sheet having at least one "pin" integrally attached onto a surface of the sheet. This wear-resistant layer is attached onto the sand core and a metal melt is cast so as to produce the final product. This method can be used to produce a variety of metal products although cast iron, and in particular, ductile iron are preferred. Moreover, this process can effectively employ any of the hard phases which can be sintered, e.g., tungsten carbide, chromium carbide, and the like. Preferably, both the sheet and the "pins" are made from the same mixture of a wear-resistant material, an organic binder, and at least one plasticizer.Type: GrantFiled: August 27, 1993Date of Patent: August 22, 1995Assignee: Deere & CompanyInventor: Gopal S. Revankar
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Patent number: 5441818Abstract: An electro-deposition coated member comprises a substrate having thereon an electro-deposition coating film. The electro-deposition film contains a powder comprising a ceramic powder having an average particle diameter of from 0.1 to 5 .mu.m, the particle surfaces of which are coated with a metal, in an amount of from 5 to 50 parts by weight based on 100 parts by weight of the electro-deposition coating film. The electro-deposition coated member can be produced by a process comprising the steps of; subjecting a substrate to electro-deposition coating in a coating composition containing a resin feasible for electro-deposition and a powder comprising a ceramic powder having an average particle diameter of from 0.1 to 5 m, the particle surfaces of which are coated with a metal, the powder being contained in an amount of from 0.2 to 30 parts by weight based on from 100 to 150 parts by weight of the resin feasible for electro-deposition; and subsequently carrying out low-temperature curing.Type: GrantFiled: January 10, 1995Date of Patent: August 15, 1995Assignee: Canon Kabushiki KaishaInventor: Susumu Kadokura
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Patent number: 5432011Abstract: The present invention relates to alloys in which the essential constituent is aluminum, metal deposits produced from these alloys, substrates coated with these alloys and the applications of these alloys. The alloys of the present invention are characterized in that they have the following atomic composition: Al.sub.a Cu.sub.b Co.sub.b, (B,C).sub.c M.sub.d N.sub.e I.sub.f, a+b+b'+c+d+e+f=100, expressed as number of atoms, a.gtoreq.50, 0.ltoreq.b<14, 0.ltoreq.b'.ltoreq.22, 0<b+b'.ltoreq.30, 0.ltoreq.c.ltoreq.5, 8.ltoreq.d.ltoreq.30, 0.ltoreq.e.ltoreq.4, f.ltoreq.2, where M represents one of more elements chosen from Fe, Cr, Mn, Ni, Ru, Os, Mo, V Mg, Zn and Pd; N represents one or more elements chosen from W, Ti, Zr, Hf, Rh, Nb, Ta, Y, Si, Ge and the rare earths; I represents the inevitable production impurities; and they contain at least 30% by mass of one or more quasicrystalline phases.Type: GrantFiled: September 8, 1994Date of Patent: July 11, 1995Assignee: Centre National de la Recherche ScientifiqueInventors: Jean-Marie DuBois, Antoine Pianelli
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Patent number: 5429876Abstract: Disclosed is a copper-lead based bearing material having excellent corrosion resistance, comprising a steel back metal and a bearing layer of a copper-lead based bearing alloy, the latter consisting essentially, by weight, 0.5 to 10% Bi, 0.5 to 8% Sn, 15 to 30% Pb, 2 to 10% Ni, not greater than 0.2% P, the balance Cu and incidental impurities.By adding Bi in a copper-lead based bearing alloy it becomes possible to obtain excellent corrosion resistance without impairing the conformability and seizure resistance of the bearing material in comparison with the conventional copper-lead based bearing alloys.Type: GrantFiled: April 12, 1994Date of Patent: July 4, 1995Assignee: Daido Metal Company Ltd.Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Tsukimitsu Higuchi
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Patent number: 5427865Abstract: A solder preform (250) has solder particles of one alloy (210) arranged within a matrix of a second solder alloy (200). This arrangement forms a structure having the desired predetermined shape of the solder preform. The solder particles comprise one or more of the following elements: tin, lead, bismuth, indium, copper, antimony, cadmium, arsenic, aluminum, gallium, gold, silver. The particles have a predetermined melting temperature. The second solder alloy is compositionally distinct from the solder particles, and has a melting temperature that is lower than the melting temperature of the solder particles. The solder particles may comprise about 88% by weight of the solder preform, and the second solder alloy comprises about 12% by weight of the preform.Type: GrantFiled: May 2, 1994Date of Patent: June 27, 1995Assignee: Motorola, Inc.Inventors: William B. Mullen, III, Kingshuk Banerji, Edwin L. Bradley, III, Vahid Kazem-Goudarzi
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Patent number: 5424138Abstract: A copper-alloy slide bearing for a low-rigidity housing having a three-layer structure of a steel back-metal, a copper-alloy layer and an overlay, the back metal containing 0.03 to 0.26% by weight of carbon. During the production of the slide bearing, a bimetal is prepared in such a manner that a back-metal portion is rolled at a total rolling reduction of 10 to 35%, and the resultant bimetal is heat-treated at a relatively low temperature, so that the slide bearing includes a back metal having a 0.01% elastic limit of not less than 300 N/mm.sup.2. When the copper-alloy slide bearing is used in a low-rigidity housing of an internal combustion engine, the slide bearing is capable of more excellently following the deformation of the housing, as well as capable of providing more excellent intimate contact and more excellent fretting resistance, than a conventional multi-layer slide bearing.Type: GrantFiled: October 26, 1993Date of Patent: June 13, 1995Assignee: Daido Metal Co., Ltd.Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Tsukimitsu Higuchi
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Patent number: 5422188Abstract: A metallic coating on a part made from a ceramic composite is obtained from a powder obtained by mixing two powders: namely,a base powder A comprising 2 to 5% of a reactive element Ti or Zr, at least one melting element B or Si in proportions ensuring a liquidus temperature between 1000.degree. C. and 1300.degree. C. and additional metallic elements including at least 50% Ni or Ni+Co;a powder B in a weight ratio of 5 to 30%, the elements of which are chosen to impart to the part particularly desired surface properties such as anti-wear, anti-oxidation and/or anti-corrosion, and to ensure a liquidus temperature of powder B greater than that of powder A.Type: GrantFiled: May 1, 1992Date of Patent: June 6, 1995Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."Inventors: Georges L. Lagain, Bernard P. C. Sohier, Danilo Varela
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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: 5415944Abstract: A solder-clad printed circuit board (100) has solder particles of one alloy (120) arranged within a matrix of a second solder alloy (115). This arrangement forms a flat structure that is alloyed to the solder pads (105) on the substrate. The solder particles (120) have a predetermined melting temperature and are made from one or more of the following elements: tin, lead, bismuth, indium, copper, antimony, cadmium, arsenic, aluminum, gallium, gold, silver. The second solder alloy (115) is compositionally distinct from the solder particles, and has a melting temperature that is lower than the melting temperature of the solder particles. The solder particles may comprise about 88% by weight, and the second solder alloy may comprise about 12% by weight of the solder cladding.Type: GrantFiled: May 2, 1994Date of Patent: May 16, 1995Assignee: Motorola, Inc.Inventors: Vahid Kazem-Goudarzi, Edwin L. Bradley, III, Kingshuk Banerji, Henry F. Liebman
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Patent number: 5405573Abstract: The present invention addresses problems in the diamond saw blade and segment art. One aspect of the invention comprises a method for making handleable, strong, discrete, metal-clad abrasive pellets. This method comprises the steps of:(a) spraying onto a bed of gas-fluidized abrasive particles a slurry of metallic powder, a binding agent, and a volatile solvent until substantially all the abrasive particles are coated with at least about 20 wt-% of the metallic powder;(b) recovering the metal powder coated abrasive particles; and(c) heating said recovered coated particles under conditions to form a sintered continuous metal coating enveloping said abrasive particles. The resulting sintered metal-clad pellets form another aspect of the invention.Type: GrantFiled: May 4, 1992Date of Patent: April 11, 1995Assignee: General Electric CompanyInventors: Thomas J. Clark, Roger R. Matarrese, Roger W. McEachron, Sergio Sinigaglia
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Patent number: 5403669Abstract: An article coated with a thermal barrier coating system for high temperature use, has its thermal cyclic spallation life improved by the application of an aluminide to the outer portion of a bonding coating disposed on a substrate. The bond coating has a surface roughness in the range of about 200-600 microinches Ra prior to application of covering thermal barrier coating.Type: GrantFiled: March 28, 1994Date of Patent: April 4, 1995Assignee: General Electric CompanyInventors: Bhupendra K. Gupta, Jim D. Reeves, Bangalore A. Nagaraj
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Patent number: 5403670Abstract: The crack-resistant compound sleeve roll having a shell portion made of a sintered alloy and a core portion made of steel is produced by (a) charging an alloy powder consisting essentially, by weight, of 1.0-3.5% of C, 2% or less of Si, 2% or less of Mn, 10% or less of Cr, 3.0-15.0% of W, 2.0-10.0% of Mo and 1.0-15.0% of V, the balance being substantially Fe and inevitable impurities, into a metal capsule disposed around a roll core; (b) after evacuation and sealing, subjecting the alloy powder to a HIP (hot isostatic pressing) treatment at 1100.degree.-1300.degree. C. to form a shell portion; (c) after removing the metal capsule, subjecting the sintered shell portion to a heat treatment having hardening at 1140.degree.-1220.degree. C. and annealing at 540.degree.-620.degree. C.; and (d) chamfering edge portions of the roll on both axial ends thereof such that a boundary of the shell portion and the core portion exists in a chamfered surface.Type: GrantFiled: December 21, 1993Date of Patent: April 4, 1995Assignee: Hitachi Metals, Ltd.Inventors: Takuya Ohsue, Akira Noda, Hiroshi Fukuzawa, Itsuo Korenaga
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Patent number: 5399438Abstract: Disclosed is a stainless steel member with a high corrosion resistance suitable for a structural member used in highly corrosive environments, such as an edge seal plate of a molten carbonate fuel cell. This stainless steel member includes a base material consisting of stainless steel containing chromium, and a corrosion-protective layer formed on the surface of the base material. In this corrosion-protective layer, a granular heterophase containing chromium is precipitated in an ordered alloy consisting of aluminum and the constituent elements of the base material.Type: GrantFiled: September 14, 1993Date of Patent: March 21, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Tateishi, Kiyoshi Imai, Hideyuki Ohzu, Kazuaki Nakagawa, Yoshihiro Akasaka
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Patent number: 5397650Abstract: A composite spray coating comprises an iron base material, a spray coating film applied thereon and a diffusion layer of aluminum or aluminum-zinc alloy, and is used for hot-dip galvanization.Type: GrantFiled: June 7, 1994Date of Patent: March 14, 1995Assignee: Tocalo Co., Ltd.Inventors: Yoshio Harada, Kazumi Tani, Yoshihumi Kobayashi
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Patent number: 5397649Abstract: A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. Because of the YSZ intermediate layer, the coating is thermodynamically stable and resists swelling at high temperatures.Type: GrantFiled: August 26, 1992Date of Patent: March 14, 1995Assignee: AlliedSignal Inc.Inventors: James L. Schienle, Thomas E. Strangman
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Patent number: 5393613Abstract: Direct fabrication of three-dimensional metal parts by irradiating a thin layer of a mixture of metal powder and temperature equalization and unification vehicle to melt the metal powder and form a solid metal film. The vehicle also protects the molten metal from oxidation. The metal powder can contain an elemental metal or several metals, the vehicle can be an organic resin or an amalgam, and the irradiation can be selectively applied by a YAG laser.Type: GrantFiled: December 3, 1993Date of Patent: February 28, 1995Assignee: Microelectronics and Computer Technology CorporationInventor: Colin A. MacKay
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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: 5370942Abstract: An improved welding auxiliary material for producing welded joints between refractory metal parts of high-wattage electric light sources is described. The characteristic feature of the invention is that the welding auxiliary material has a porous structure surface layer sintered from a refractory metal powder having a melting point of above 2000.degree. C.Type: GrantFiled: January 8, 1992Date of Patent: December 6, 1994Assignee: Tungsram ReszvenytarsasagInventors: Janos Nagy, Gyula Busai
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Patent number: 5368947Abstract: An article having a slip-resistant surface and method of producing the same includes metallurgically bonding raised bead-like configurations of a compatible material at select locations on the article surface. The method includes injecting, substantially simultaneously with projecting a high power radiant energy beam, powder particles into a portion of the beam lying a distance away from the point of impingement on the surface portion of the article. The particles interact with the beam for a time period sufficient to cause at least partial melting of a substantial number of particles which are then transported to a selected point on the surface portion. The partially melted particles, along with completely and/or any substantially unmelted particles, are allowed to bond with the surface material thereby forming a raised configuration thereon. The process is repeated for forming another raised configuration at another selected location on the surface portion for thereby forming a slip-resistant article.Type: GrantFiled: August 12, 1991Date of Patent: November 29, 1994Assignee: The Penn State Research FoundationInventor: Paul E. Denney
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Patent number: 5364682Abstract: A composite sliding member includes a metal wire mesh or expanded metal impregnated and covered with a composition of 0.1-50% by volume of one or more of PFA, FEP and EPE, and 0.1-50% by volume of at least one of oxybenzoyl polyester, polyphenylene sulfide, thermosetting resin, metal lubricant, metal oxide, composite metal oxide, metal sulfide, metal fluoride, carbon-based self lubricant, fiber material, and ceramics, with the remainder being substantially PTFE.Type: GrantFiled: January 15, 1993Date of Patent: November 15, 1994Assignee: Daido Metal Company Ltd.Inventors: Tadashi Tanaka, Hidehiko Tamura, Nobutaka Hiramatsu, Takuya Tanaka
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Patent number: 5358793Abstract: A PTC device has two electrodes affixed to opposed surfaces. The electrodes consist of a metal foil having a conductive layer on their surfaces that contact the PTC material. The conductive layer has a thermal coefficient of expansion intermediate between the thermal coefficients of expansion of the metal foil and the PTC material. The intermediate value of the thermal coefficient of expansion of the conductive layer prevents peeling of the electrodes off the PTC element due to the variation of the temperature of the PTC device resulting from repeated voltage applications. In addition, improved adhesion of the electrodes to the PTC material reduces resistance changes after repeated temperature cycling.Type: GrantFiled: May 7, 1992Date of Patent: October 25, 1994Assignee: Daito Communication Apparatus Co., Ltd.Inventors: Toshiyuki Hanada, Mayumi Takata, Naoki Yamazaki, Isao Morooka, Kazuhiko Harazaki
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Patent number: 5354622Abstract: Disclosed herein is a multilayered sliding member comprising a lubricating composition comprising polytetrafluoroethylene and, as filler, 1-25 wt % of fibrous magnesium oxysulfate, fan-shaped magnesium oxysulfate or a mixture thereof, and a porous sintered metal layer formed on a steel backing,the lubrication composition being impregnated in and coated on a porous sintered metal layer formed on the steel backing.Type: GrantFiled: July 28, 1993Date of Patent: October 11, 1994Assignee: Oiles CorporationInventors: Takashi Nakamaru, Tadashi Watai, Akihiko Okimura, Sumihide Yanase
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Patent number: 5352538Abstract: A surface hardened aluminum part having excellent heat resistance and abrasion resistance obtained by forming, on the surface of an aluminum base material, an alloy layer that has a uniform composition and uniform hardness, being free from cracks. An aluminum alloy powder made of aluminum and metals each of which forms an intermetallic compound of high hardness with aluminum is prepared. This aluminum alloy powder is supplied onto the aluminum base material and the aluminum or aluminum alloy contained in the aluminum base material is alloyed with the aluminum alloy powder using a high-density energy heat source to form an alloy layer. The alloy layer thus formed has an intermetallic compound of high hardness uniformly distributed throughout the layer so that the hardness of the alloy layer is uniform and cracking is unlikely to occur.Type: GrantFiled: August 31, 1992Date of Patent: October 4, 1994Assignee: Komatsu Ltd.Inventors: Toshihide Takeda, Kaoru Adachi
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Patent number: 5352537Abstract: A metal matrix composite is produced by forming a rapidly solidified aluminum base alloy into powder. The powder is plasma sprayed onto at least one substrate having thereon a fiber reinforcing material to form a plurality of preforms. Each of the preforms has a layer of the alloy deposited thereon, and the fiber reinforcing material is present in an amount ranging from about 0.1 to 75 percent by volume thereof. The preforms are bonded together to form an engineering shape.Type: GrantFiled: December 7, 1992Date of Patent: October 4, 1994Assignee: AlliedSignal Inc.Inventors: Santosh K. Das, Michael S. Zedalis, Paul S. Gilman
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Patent number: 5340658Abstract: The invention provides composites made from a carbon-based material and a meallic material by joining them together by means of a brazing filler metal which is an alloy comprising, as essential components thereof, at least one element selected from among vanadium, niobium, titanium, zirconium and silicon and at least one element selected from among copper, silver, nickel and aluminum as well as welding nozzles made by joining a ring made of a carbon-based material to the tip of a metal nozzle using said brazing filler metal.Type: GrantFiled: August 13, 1992Date of Patent: August 23, 1994Assignee: Ishihara Chemical Co., Ltd.Inventors: Tadao Komatsu, Seiichiro Miyata
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Patent number: 5334460Abstract: A Cu-Pb system composite bearing has three layers including a backing metal, a bearing alloy layer formed on the backing metal, and an overlay formed on the bearing alloy layer. The Cu-Pb bearing alloy contains 2 to 10% Ni and 0.05 to 1.0% B. An example of the composition of the Cu-Pb system bearing alloy consists of 0.5 to 8% Sn, 15 to 30% Pb, 0.2% or less P, 2 to 10% Ni, 0.05 to 1.0% B and the balance of Cu and unavoidable impurities. The Cu-Pb bearing alloy must have a hardness over HV80. Ni and B contained in the bearing alloy decrease the affinity of the Cu-Pb bearing alloy for tin in the overlay of a tin-containing lead alloy. The corrosion resistance of the bearing is improved by plating the both surfaces of the composite bearing with Sn, Pb or an alloy thereof.Type: GrantFiled: December 2, 1992Date of Patent: August 2, 1994Assignee: Daido Metal CompanyInventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Kenji Sakai
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Patent number: 5328772Abstract: A multilayer sliding material for high-speed engine, comprising a steel back metal, a Cu or Cu-base alloy plating layer, a Cu-Pb bearing alloy layer, and an overlay, said steel back metal having 155 or more of Vickers hardness and 42 kgf/mm.sup.2 or more of 0.2% yield strength, a Cu-Pb bearing alloy layer containing 15-30 wt % of Pb and 0.5-2.0 wt % of Sn and having 0.25 cal/cm.s..degree. C. or more of thermal conductivity, 75 or more of Vickers hardness and 18 kgf/mm.sup.2 or more of tensile strength, said overlay of a lead base alloy containing 2-8 wt % of Sn and 3-11 wt % of In and having more than 250.degree. C. of melting start temperature. The material has a superior antiseizure property at high speed of engine. In particular, the rising of the melting start temperature of the metal of the overlay and the thermal conductivity of the bearing alloy provides a superior sliding property of plain bearing at high speed of engine.Type: GrantFiled: February 12, 1992Date of Patent: July 12, 1994Assignee: Daido Metal CompanyInventors: Tadashi Tanaka, Masaaki Sakamoto, Motomu Wada, Koichi Yamamoto, Hideo Ishikawa, Youji Nagai, Kenji Sakai
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Patent number: 5328773Abstract: An article of manufacture is disclosed having a first part constructed or powdered metal and having a lip which extends outwardly from one end of the first part. A second part, for example a steel stamping, has a first side, a second side and an opening extending between its sides. The opening is dimensioned so that, with the second part positioned on the end of the first part, the lip extends through the opening and outwardly from the second or outer side of the second part. The first and second parts are then mechanically secured together by deforming the lip so that a portion of lip overlies and entraps an edge portion of the second part between the deformed lip and the end of the first part.Type: GrantFiled: September 3, 1992Date of Patent: July 12, 1994Assignee: ICM/KrebsogeInventor: Norm Scott
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Patent number: 5326525Abstract: A process is disclosed for fabricating a metal aluminide composite which comprises providing a metal aluminide, such as titanium aluminide, or a titanium aluminide alloy, and a reinforcing fiber material, such as silicon carbide fiber, and placing an interlayer or diffusion barrier layer in the form of a metal selected from the group consisting of silver, copper and gold, and alloys thereof, between the metal aluminide and the reinforcing fiber material. The interlayer metal can be a foil of the metal or in the form of a coating, such as a silver coating, on the reinforcing fiber material. The metal aluminide, the reinforcing fiber material, and the metal interlayer, e.g., in the form of a packet of a plurality of alternate layers of metal aluminide alloy and reinforcing fiber material, each layer being separated by the metal interlayer, is pressed and heated at an elevated temperature, e.g., ranging from about 900.degree. to about 1200.degree. C., at which diffusion bonding occurs.Type: GrantFiled: July 11, 1988Date of Patent: July 5, 1994Assignee: Rockwell International CorporationInventor: Amit K. Ghosh
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Patent number: 5326646Abstract: A synchronizer ring comprises a ring body having a sliding portion, and a directly spray-coated wear-resistant film formed on a surface of the sliding portion. The film is made of a wear-resistant brass alloy which comprises Cu, Zn and at least one element selected from the group consisting of Al, Mn, Fe, Ni, Si, Co, Cr, Ti, Nb, V, Zr and Mo. The spray-coated film exhibits good wear resistance and good bonding strength.Type: GrantFiled: December 4, 1992Date of Patent: July 5, 1994Assignee: Chuetsu Metal Works Co., Ltd.Inventors: Kunio Nakashima, Masao Hosoda, Wataru Yago, Kazuyuki Inagaki
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Patent number: 5324592Abstract: A copper powder-free friction material which is made by sintering and intended for friction surfaces of couplings or brakes contains powdery and/or granular metallic and non-metallic components, at least 50% by weight of the non-ferrous heavy metal component being brass powder.Type: GrantFiled: March 20, 1992Date of Patent: June 28, 1994Assignee: Hoerbiger & Co.Inventors: Fred Blankenhagen, Hermann Putz
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Patent number: 5320919Abstract: A copper foil for an inner layer circuit of a multi-layered printed circuit board, which comprises a black metal plated layer formed on at least the rough surface which becomes a surface of an inner layer circuit of a copper foil having both sides roughened in advance, in order to enhance the bonding strength to a prepreg, make it safe from haloing and facilitate optical checking of the copper foil.Type: GrantFiled: May 28, 1991Date of Patent: June 14, 1994Assignees: Sumitomo Bakelite Company Limited, Circuit Foil Japan Co., Ltd.Inventors: Keiji Azuma, Kimikazu Katoh, Ryoichi Oguro, Takashi Inada
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Patent number: 5318214Abstract: A method for brazing together two parts at least one of which comprises a titanium aluminide material is described wherein a metallic layer of foil or powder is inserted between the parts in laminar contact with respective confronting surfaces thereof to be joined, the metallic layer comprising a metal which forms with titanium a eutectic composition having a characteristic fusion temperature lower than the fusion temperature of the metal, and the metallic layer and confronting surfaces of the parts are heated to a temperature of about the characteristic fusion temperature of the eutectic composition.Type: GrantFiled: November 18, 1987Date of Patent: June 7, 1994Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Matthew J. Lucas, Jr., Murray S. Smith, Jr.
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Patent number: 5314756Abstract: Disclosed is to improve corrosion resistance of rare-earth-element (RE)/transition-metal system permanent magnets by means of surface treatment, the magnets containing one or more of RE comprising yttrium, transition metals mainly comprising Fe. A conductive underlayer is formed on the surface of the magnet, on which an electroplated (hereinafter referred to as e-) Cu layer with the average crystal grain size not larger than 0.9 .mu.m is further formed. The underlayer may be any of an e-Ni layer, an electroless-plated Cu layer, an e-Cu layer by a cyanic Cu bath and another e-Cu layer by a bath of an alkaline organic acid salt of Cu containing phosphoric ester as a primary ingredient. A protective layer may be formed on the e-Cu layer, which is any of an e-Ni layer, an electroless-plated Ni-P layer, an e-Ni-alloy layer. The e-Cu layer is formed with a Cu pyrophosphate bath.Type: GrantFiled: November 25, 1992Date of Patent: May 24, 1994Assignee: Hitachi Metals, Ltd.Inventor: Atsushi Tagaya
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Patent number: 5302465Abstract: A thermal barrier coating system consists of two layers of a zirconia-yttria ceramic. The first layer is applied by low pressure plasma spraying. The second layer is applied by conventional atmospheric pressure plasma spraying. This facilitates the attachment of a durable thermally insulating ceramic coating directly t the surface of a highly oxidation resistant NiAl-based intermetallic alloy after the alloy has been preoxidized to promote the formation of a desirable Al.sub.2 O.sub.3 scale.Type: GrantFiled: October 26, 1992Date of Patent: April 12, 1994Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Robert A. Miller, Joseph Doychak
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Patent number: 5300366Abstract: Disclosed herein are a fluororesin composition for a sliding member comprising a fluororesin, at least one of fillers selected from the group consisting of glass fiber, glass powder, carbon fiber and carbon powder, and a phosphate, and a sliding member thereof.Type: GrantFiled: April 29, 1991Date of Patent: April 5, 1994Assignee: Oiles CorporationInventors: Takashi Nakamaru, Tadashi Watai, Masayuki Rokugawa, Kouichi Tsunoda, Tadayoshi Umeki, Takayuki Miyaji, Kenji Yamada
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Patent number: 5298336Abstract: The present invention provides a multilayer composite sliding material with excellent seizure resistance property having a steel plate or a steel plate having surfaces plated with copper or the like; a bond layer having a thickness of 0.05 to 0.5 mm, formed on the steel plate, and made of a sintered powder material consisting of 5 to 16% Sn, 0 to 15% Pb, 0 to 0.5% P and balance essentially Cu; and an alloy layer having a thickness of 0.1 to 1.0 mm, formed on the bond layer, and made of a sintered powder material consisting of 5 to 16% Sn, 1 to 12% MoS.sub.2 and balance essentially Cu. In a modified form of the alloy layer, not more than 20% Pb, not more than 1% P or not more than 12% Ni may be added. MoS.sub.2 powder may be coated with Cu or Ni.Type: GrantFiled: February 17, 1993Date of Patent: March 29, 1994Assignee: Daido Metal Company, Ltd.Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Tsukimitsu Higuchi
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Patent number: 5266414Abstract: An impregnated thermionic cathode includes a porous matrix of sintered tungsten-alloy particles containing less than six percent iridium and/or other platinum-group metal. The pores of the matrix are impregnated with a temporary process impregnant such as molten copper or an organic monomer, and upon solidification is machined to a desired shape. Thereafter the temporary process impregnant is removed, and the matrix pores again infiltrated with a barium oxide such as molten barium aluminate, or other alkaline earth. A thin, iridium-rich surface activating layer, preferably of about 50% iridium, is then applied to the emitting surface. The diffusion of surface activating iridium is substantially blocked; superior emission and lifetime is provided; and the cathode is relatively low cost and easy to fabricate.Type: GrantFiled: March 18, 1988Date of Patent: November 30, 1993Assignee: Varian Associates, Inc.Inventors: Gerard A. Goeser, Michael C. Green
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Patent number: 5264294Abstract: A material mixture comprises at least two metallic components with different properties on a nickel base with additions of up to 21% by weight of chromium and a total addition of up to 21% of the elements B, Si, Fe, the components thereof having been produced in accordance with different processes. In that respect there is to be provided a total addition of up to 21% of the elements B, Si, Fe, Mo and W. That material mixture comprises at least a component in powder form and at least one component in web form, preferably a foil or plate which is of a curved cross-section as the component in web form which surrounds the component in powder form.Type: GrantFiled: July 22, 1991Date of Patent: November 23, 1993Assignee: Castolin S.A.Inventors: Leon Noel, Hans T. Steine, Horst Seifahrt
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Patent number: 5236787Abstract: A coating for a metallic substrate has a metallic bond coat, a metallic seal coat and a centrally disposed layer of ceramic material. Transition layers comprising a controllably positioned mixture of metallic and ceramic materials are interposed, respectively, between the bond coat and the central layer of ceramic material, and between the seal coat and the central layer of ceramic material. The coating provides a desirable thermal barrier for internal engine components. Further, the coating is graded to avoid harmful internal thermal stress between dissimilar materials in the coating, and has a sealed external surface that is resistant to corrosion, erosion, hot gas infiltration, and wear during operation in an internal combustion engine.Type: GrantFiled: July 29, 1991Date of Patent: August 17, 1993Assignee: Caterpillar Inc.Inventor: John A. Grassi
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Patent number: 5226977Abstract: A method is provided for forming a thick and hard deposit having excellent thermal shock resistance on an engine valve made of a titanium material, particularly on its face and stem end, without allowing the formation of any brittle compound layer between the deposit and the valve material. An engine valve hardfaced on its face and stem end is also provided. A powder comprising a titanium material and 1 to 90% by weight of cobalt, or at least 25% by weight of a titanium material, 1 to 50% by weight of cobalt and 1 to 50% weight of a cobalt-based alloy is fused and deposited on an engine valve mad of a titanium material (e.g., on its face), and the deposited material is aged. The powder is prepared by mixing at least two powders, or from a molten alloy containing all of its constituents, to form a thick and hard deposit having excellent thermal shock and wear resistance on, e.g., the face of the engine valve and is, therefore, of high industrial utility.Type: GrantFiled: April 12, 1990Date of Patent: July 13, 1993Assignee: Nippon Steel CorporationInventors: Saburo Kitaguchi, Tohru Saito, Yasuo Tsukahara, Yasutoshi Nakada
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Patent number: 5223345Abstract: An extruder-housing part for a double-worm extruder for the plastification of thermoplastic synthetic resin and plastic mixtures has two chambers for receiving the worms and forming a figure eight cavity. A wear-resistant material formed as a hard-phase layer is provided to line the chambers. The extruder-housing part is a one-piece seamless structure with an isotropic lattice of powder metallurgical origin with a hot isostatic pressing configuration.Type: GrantFiled: February 20, 1992Date of Patent: June 29, 1993Assignee: Reifenhauser GmbH & Co. MaschinenfabrikInventors: Hartmut Kaiser, Peter Lulsdorf
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Patent number: 5212018Abstract: An improved electrode for a conductivity meter is provided formed of a titanium material cladded with platinum. The electrode is formed by immersing the titanium electrode form in an acid bath at an elevated temperature for approximately three hours. The surface of the electrode form is reduced in a relatively weak acid bath, and is then cladded by electrolysis with a platinum material to form a platinum black plating.Type: GrantFiled: January 9, 1991Date of Patent: May 18, 1993Assignee: Horiba, Ltd.Inventor: Yasukazu Iwamoto
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Patent number: 5196272Abstract: The corrosion resistance inherent in stainless steel is further improved by a cladding layer provided on the surface thereof. The cladding layer is formed of a coating material which is applied onto the surface of the stainless steel and, then, burnt to be fused by laser beams. The coating material contains a larger amount of Cr than that of the stainless steel. The thus fused material and a fused portion of the stainless steel are mixed with each other to form the cladding layer of remarkable corrosion resistance due to a larger amount of Cr contained therein. The formation of the cladding layer on the inner surface of a small diameter pipe is enabled by a coating film shaping device which has a jig for shaping the applied material into a film of a uniform thickness and by a laser irradiation torch which has an arrangement for emitting the laser means radially outward from the inside of the pipe.Type: GrantFiled: July 15, 1992Date of Patent: March 23, 1993Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Norio Morishige, Kenji Hirano, Kiyofumi Ishikawa, Shuji Furuya
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Patent number: 5194339Abstract: A discontinuously casting copper alloy mold is provided. The mold consists of an Ni-plating layer formed on an inner surface of a mold blank formed of copper or a copper alloy. An intermediate layer is provided of a spray coating of a powdered material consisting of two or more of Ni, Cr and Co and 0.1% to 1.0% by weight of Y.Type: GrantFiled: May 31, 1991Date of Patent: March 16, 1993Assignee: Sugitani Kinzoku Kogyo Kabushiki KaishaInventor: Nobuhiro Sugitani
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Patent number: 5186739Abstract: A cermet alloy and a drill formed of the cermet alloy include hard dispersed phases and binder metal phases. The hard dispersed phases include a metal atom group containing titanium and a nonmetal atom group containing nitrogen. The amount of titanium contained in the metal atom group is at least 0.5 and not more than 0.95 as an atomic ratio. The amount of nitrogen contained in the nonmetal atom group is at least 0.1 and not more than 0.7 as an atomic ratio. The hard dispersed phases further include a fine grained portion having a mean grain size of at least 0.2 .mu.m and not more than 0.6 .mu.m and a coarse grained portion having a mean grain size of at least 1 .mu.m and not more than 3 .mu.m. The volume ratio of the fine grained portion to the course grained portion is at least 0.3 and not more than 3. The proportion of the binder metal phases contained in the cermet is at least 5 percent by weight and not more than 30 percent by weight.Type: GrantFiled: October 19, 1990Date of Patent: February 16, 1993Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kazutaka Isobe, Toshio Nomura
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Patent number: 5158933Abstract: A method of forming a phase-separated composite material which utilizes sputtering in a thermal gradient at relatively high sputtering pressures generally above about 0.1 Torr sufficient to produce nanoscale particles which are embedded in a continuous phase matrix produced by normal sputtering. This method avoids the alloying and/or compound formation which prevents preparation of phase-separated composites by conventional co-sputtering, and the invention thus enables particulate composites to be formed from entirely new classes of materials. Microhardness testing shows that the phase-separated composites produced by the present invention have an increased hardness compared to the pure matrix material.Type: GrantFiled: November 15, 1990Date of Patent: October 27, 1992Inventors: Ronald L. Holtz, Gan-Moog Chow, Alan S. Edelstein
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Patent number: 5154780Abstract: This invention is characterized by working which improves metal formability. This is contrary to the usual result of working metals, where formability decreases during working.Type: GrantFiled: June 22, 1990Date of Patent: October 13, 1992Assignee: Aluminum Company of AmericaInventor: M. K. Premkumar