Next To Group Viii Or Ib Metal-base Component Patents (Class 428/652)
  • Patent number: 6194087
    Abstract: A composite material for plain bearings comprises a backing layer, a bearing metal layer consisting of a copper alloy with a copper content of from 50 to 95 wt. % or an aluminum alloy with an aluminum content of from 60 to 95 wt. %, a diffusion barrier layer and an overlay, applied by electroplating, consisting of a lead-free, tin and copper-containing alloy. The invention provides a composite multilayer material whose overlay, applied by electroplating, does not exhibit any embrittlement even at relatively high temperatures, irrespective of the copper content. The overlay preferably comprises from 8 to 30 wt. % copper, 60 to 97 wt. % tin and 0.5-19 wt. % cobalt.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: February 27, 2001
    Assignee: Clyco-Metall-Werke Glyco B.V. & Co. KG
    Inventors: Hans-Ulrich Huhn, Dietmar Wiebach, Karl-Heinz Gruenthaler, Peter Spahn
  • Patent number: 6183880
    Abstract: This invention provides a composite foil comprising an aluminum carrier layer and an ultra-thin copper foil having a protective layer disposed between them comprising a porous copper layer and an interpenetrating zinc layer. A process for producing such composite foils comprises the steps of preparing the surface of the aluminum carrier, electrodepositing a porous copper layer on the aluminum carrier layer followed by electrodepositing a zinc layer, and then electrodepositing two layers of copper to form the ultra-thin copper foil. The composite foil provides a uniform bond strength between the aluminum carrier and the protective layer which is adequate to prevent separation of the carrier and ultra-thin copper foil during handling and lamination, but which is significantly lower than the peel strength of a copper/substrate bond, so that the carrier can easily be removed after lamination of the composite foil to an insulating substrate.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: February 6, 2001
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Junshi Yoshioka, Shinichi Obata, Makoto Dobashi, Takashi Kataoka
  • Patent number: 6183887
    Abstract: A composite structure including a substrate and a heat protection element on the substrate, wherein the heat protection element includes a quasicrystalline aluminium alloy of one or a number of quasicrystalline phases which are either quasicrystalline phases in the strict sense, or approximating phases, wherein the quasicrystalline phases exhibit a thermal diffusivity, measured at ambient temperature, lower than 2.5×10−6 m2/s, and a thermal diffusivity measured in the temperature range 650-750° C.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: February 6, 2001
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Jean-Marie Dubois, Pierre Archambault, Bernard Colleret
  • Patent number: 6180265
    Abstract: A method for forming a solder bump pad (22), and more particularly converting a wire bond pad (12) of a surface-mount IC device (10) to a flip chip solder bump pad (22), such that the IC device (10) can be flip-chip mounted to a substrate. The process generally entails an aluminum wire bond pad (12) on a substrate, with at least a portion of the wire bond pad (12) being exposed through a dielectric layer (16) on the substrate. A nickel layer (24) is then deposited on the portion of the wire bond pad (12) exposed through the dielectric layer (16). The nickel layer (24) is selectively deposited on the exposed portion of the wire bond pad (12) without use of a masking operation, such as by an electroless deposition technique. The nickel layer (24) completely overlies the aluminum wire bond pad (12), and therefore protects the bond pad (12) from oxidation due to exposure. Thereafter, the solder bump pad (22) is formed by depositing a solderable material on the nickel layer (24).
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: January 30, 2001
    Assignee: Delco Electronics Corporation
    Inventor: Curt A Erickson
  • Patent number: 6177204
    Abstract: A multi-layer magnetic material (10) has magnetic vectors (21,22) that point along a length (27) of the material (10). Opposing magnetic fields cause the vectors to snap past the perpendicular position with a rapid change in the resistance of the material. The material is used as a memory cell (37,38,39,41) of a memory (36).
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: January 23, 2001
    Assignee: Motorola, Inc.
    Inventors: Eugene Chen, Saied N. Tehrani
  • Patent number: 6171711
    Abstract: A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: January 9, 2001
    Assignee: United Technologies Corporation
    Inventors: Peter J. Draghi, Brian J. Shurman, Dale A. Simard, Peter Wrabel
  • Patent number: 6153320
    Abstract: A magnetic device uses laminated ferromagnetic layers containing antiferromagnetically coupled ferromagnetic films coupled together with improved antiferromagnetically coupling (AFC) films. The AFC films are formed of the binary and ternary alloys comprising combinations of Ru, Os and Re. The ferromagnetic film thicknesses, the AFC film thicknesses and the compositions of the films in the laminated layer can be varied to engineer the magnetic properties of the device. The magnetic devices whose properties are improved with the improved laminated layers include spin valve magnetoresistive read heads and magnetic tunnel junction (MTJ) devices for use as magnetic memory cells and magnetoresistive read heads.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: November 28, 2000
    Assignee: International Business Machines Corporation
    Inventor: Stuart Stephen Papworth Parkin
  • Patent number: 6153313
    Abstract: A coating system (20) for articles used in hostile thermal environments, such as turbine, combustor and augmentor components (10) of a gas turbine engine. The coating system (20) of this invention employs a NiAl-based intermetallic coating (24) containing 30 to 60 atomic percent aluminum so as to be predominantly of the .beta.-NiAl phase, but also contains alloying additions intended to increase the creep strength of the coating (24), and optionally contains alloying additions to getter impurities, increase fracture resistance, and promote oxidation resistance. For this purpose, the coating (24) preferably includes additions of chromium, titanium, tantalum, silicon, hafnium and/or gallium, and optionally contains additions of calcium, zirconium, yttrium, and/or iron.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: November 28, 2000
    Assignee: General Electric Company
    Inventors: Joseph D. Rigney, Ramgopal Darolia, William S. Walston, Reed R. Corderman
  • Patent number: 6150039
    Abstract: Method and structure are disclosed for forming a protective and/or reflectivity enhanced over coating layer, or layers, on a noble metal. A metallic binder layer, capable of forming a metallic bond with the noble metal and exhibiting good adhesion to the over coating layer, is deposited on the noble metal, utilizing physical vapor deposition, and the over coating layer is thereafter deposited on the metallic binder layer, again utilizing physical vapor deposition. The noble metal is preferably gold, but may be silver or an alloy of gold or silver, and may be deposited on a substrate. Each metallic binder layer is a thin layer, such as a layer of chromium, titanium, tantalum, nickel, cobalt, or an alloy thereof, and over coating is formed as a single dielectric layer of material or as a stack of alternating low and high indices of refraction dielectric layers.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: November 21, 2000
    Assignee: Research Electro-Optics, Inc.
    Inventors: Ramin Lalezari, Dale E. Long
  • Patent number: 6150037
    Abstract: Clad material comprises a metal substrate which is provided with a multiplicity of perforated openings therein and a metal foil which is laminated on the metal substrate to close the perforated openings. To produce such a clad material, at least one surface of the metal substrate and corresponding one surface of the metal foil are respectively subjected to a dry etching and the metal substrate and the metal foil are laminated in such a manner that the etched surfaces face each other. Alternately, only one surface of the metal substrate is subjected to a dry etching and the metal substrate and the metal foil are laminated in such a manner that the etched surface of the metal substrate defines a laminating surface. It may be possible to provide a nickel plating on the metal substrate or the metal foil. The clad material can be effectively used for producing safety valve chips which rupture accurately at low pressures which fall in a stable pressure range on a mass production basis.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: November 21, 2000
    Assignee: Toyo Kohan Co., LTD
    Inventors: Kinji Saijo, Kazuo Yoshida, Nobuyuki Yoshimoto, Yoshihiko Isobe
  • Patent number: 6146774
    Abstract: A medium-P/high-P type Ni--P plating coating, the hardness of which can be furthermore enhanced by heat treating, is used for plating on the surface of a sliding member. However, its wear resistance does not arrive at the desired level. In addition, although the P content of the conventional Ni--P--B electroless plating coating is lower than that of Ni--P electroless plating coating, P considerably disordered the crystallinity of Ni crystals and hence impaired the sliding characteristics. There is provided as a Ni--P--B electroless plating coating, which can eliminate the above described problems, a plating coating containing from 0.05 to 5% by weight of P and from 0.01 to 0.05% by weight of B. Furthermore, barrel polishing, shot blasting, laser-beam irradiation, high-frequency induction heating and the like are applied to the plating coating.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: November 14, 2000
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Shinichi Okamoto, Yasushi Yamaguchi, Yoshiaki Kitagawa
  • Patent number: 6143426
    Abstract: The optical recording medium of this invention includes: a first substrate having a first information surface; a semitransparent reflection film formed on the first information surface of the first substrate; a second substrate having a second information surface; a reflection film formed on the second information surface of the second substrate; and an adhesive layer for adhering the first substrate and the second substrate so that the first information surface and the second information surface face each other, wherein the thickness of the first substrate is 0.56 mm or more, the thickness of the adhesive layer is 30 .mu.m or more, and the total thickness of the first substrate and the adhesive layer is 0.68 mm or less.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: November 7, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mitsurou Moriya, Shin-ichi Tanaka, Yasuhiro Sugihara, Hiroshi Taniguchi, Michiyoshi Nagashima
  • Patent number: 6139976
    Abstract: The invention relates to an article of manufacture comprising: a substrate composed of a superalloy containing chromium and a base element selected from the group consisting of iron, cobalt, and nickel; and an enrichment layer containing chromium and placed on the substrate. Therein, the enrichment layer comprises a continuous matrix composed of a gamma-phase solid solution of chromium in the base element. The invention also relates to the manufacture of such an article. The article may in particular be a gas turbine component.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: October 31, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Norbert Czech, Knut Halberstadt, John Smith, Adrian Kempster
  • Patent number: 6136453
    Abstract: A bond coat and method of forming a bond coat for a thermal barrier coating system are set forth. The bond coat is a roughened bond coat and comprises a layer possessing an uneven, undulated, and irregular surface. The layer is formed of a metal powder mixture disposed on a substrate, such as a turbine component, by high velocity oxygen fuel spraying. The metal powder mixture comprises at least one of a first powder having a first melting point and a second powder having a second melting point that is higher than the first melting point. The bond coat's uneven, undulated, and irregular surface enhances prevention of de-bonding of elements in a thermal barrier coating system.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: October 24, 2000
    Assignee: General Electric Company
    Inventors: Ann Melinda Ritter, Melvin Robert Jackson, Yuk-Chiu Lau
  • Patent number: 6136451
    Abstract: A method of improving oxidation resistance of a platinum modified aluminide diffusion coating on a substrate involves electroplating the substrate with a platinum layer from an aqueous hydroxide based electroplating solution and aluminizing the substrate to grow the platinum modified aluminide diffusion coating on said layer. The electroplating solution preferably includes an alkali element and/or alkaline earth element that is incorporated in the platinum layer and in the aluminide diffusion coating formed thereon to significantly improve oxidation resistance of the coating.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: October 24, 2000
    Assignee: Howmet Research Corporation
    Inventors: Bruce M. Warnes, Thomas A. Legard, Nick S. DuShane, Jack E. Cockerill, Robert W. Beck
  • Patent number: 6136454
    Abstract: An aluminum or aluminum alloy surface which during use is exposed to sliding friction is coated to provide a chemical conversion coating of tin comprising 0.2-10.0 wt. % cobalt. For example, a swash plate type compressor has a cylinder block with cylinder bores disposed parallel to the axis of the cylinder block. A rotary shaft rotatably mounted within the cylinder block carries an aluminum swash plate. The swash plate has a coating preferably between 0.8 to 2.5 microns. The coating on the swash plate permits the use of low silicon alloy aluminum without the need of metal plating or high finish polishing.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: October 24, 2000
    Assignee: Ford Motor Company
    Inventor: Carl Edward Cordy
  • Patent number: 6129991
    Abstract: High temperature oxidation resistance of an aluminide diffusion overcoated MCrAlY coating system is substantially improved by CVD over-aluminizing the MCrAlY type overlay coating under CVD conditions that result in reduced concentrations of such tramp impurities as S and P in the aluminized MCrAlY overlay coating region of the coating system. The CVD aluminizing conditions yield an outwardly grown aluminide over-coat on the underlying MCrAlY type coating.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: October 10, 2000
    Assignee: Howmet Research Corporation
    Inventors: Bruce M. Warnes, William J. Shriver, Ronald J. Honick, Jr., Nick S. DuShane
  • Patent number: 6129996
    Abstract: An aluminum or aluminum alloy surface which during use is exposed to sliding friction has a chemical conversion coating of mostly tin with 0.2-10.0 wt. % cobalt and 0.1 to 12 wt. % bismuth. For example, a swashplate of a swashplate type compressor may be conversion coated on at least part thereof, that is the part that during use contact the shoes. Preferably, the coating is between 0.8 to 2.5 microns thick. The coating on the swash plate permits the use of low silicon alloy aluminum without the need of metal plating or high finish polishing.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: October 10, 2000
    Assignee: Ford Motor Company
    Inventor: Carl Edward Cordy
  • Patent number: 6127046
    Abstract: An intermetallic bond between a ferrous metal and a non-ferrous metal wherein an intermetallic bond layer that is substantially free of graphic inclusions joins the two. The graphite is effectively eliminated from the bond layer by either removing it from the ferrous metal or by sealing it off from the bond layer. Graphite removal may be accomplished in a variety of ways, including electrochemical cleaning and laser surface treatment. Alternatively, the graphite may be prevented from incursing into the bond region by sealing it off with a layer of metal, such as a chromium plating, that prevents it from penetrating through the bond layer and into the non-ferrous metal.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: October 3, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: John A. Worden, Gordon L. Starr, Yong-Ching Chen
  • Patent number: 6127047
    Abstract: High temperature alloys resistant to degradation and oxidation are provided. In accordance with preferred embodiments, alloys comprising from about 0.1 to about 50 atomic percent silicon, from about 10 to about 80 atomic percent aluminum, and at least one metal selected from the group consisting of chromium, iridium, rhenium, palladium, platinum, rhodium, ruthenium, osmium, molybdenum, tungsten, niobium and tantalum are formed. Shaped bodies and structural members comprising such alloys are also described as are methods for their fabrication.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 3, 2000
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Wayne L. Worrell, Kang N. Lee
  • Patent number: 6124011
    Abstract: Information-bearing discs are fabricated from a first disc and a second disc. The first disc has a first substantially planar surface and a second surface opposite to the first surface. The second surface has first information recorded on it by means of local changes in the distance of the second surface from the first surface. The second disc is thicker than the first disc and has opposite, substantially planar, third and fourth surfaces. The fourth surface may have second information recorded on it by means of local changes in the distance of the fourth surface from the third surface. The second disc is secured to the first disc so that the fourth surface faces the second surface.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: September 26, 2000
    Assignee: WEA Manufacturing, Inc.
    Inventor: Ellis E. Kern
  • Patent number: 6117284
    Abstract: A dual-layer DVD disc that does not require a stamping step (typically, as part of the 2P prior art manufacturing process) during its manufacture. A polycarbonate substrate is molded and coated with a semireflective data layer in the usual way. A PMMA substrate is molded and coated with a fully reflective data layer. Adhesive is placed on the semireflective data layer, and the fully reflective data layer is transferred from its PMMA substrate to the polycarbonate substrate. The polycarbonate substrate thus ends up with two data layers in conformance with the DVD specifications, and the PMMA substrate can even be recycled for another use.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: September 12, 2000
    Assignee: WEA Manufacturing, Inc.
    Inventor: William R. Mueller
  • Patent number: 6114053
    Abstract: A method of overlaying by a laser beam, comprises the steps of: relatively moving and irradiating a laser beam with respect to a base metal and simultaneously putting an other metal material than the base metal material on the base metal surface; and forming an overlay layer by melting the other metal material, wherein the overlay operation is performed in such a manner that an inclined angle .theta. with respect to the base metal surface of the beginning end portion surface becomes a range of 8.degree.<.theta.<27.degree..
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: September 5, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hidenobu Matsuyama, Shinji Nishino, Kouichi Kanai
  • Patent number: 6106960
    Abstract: A joined article is constituted by a first member made of aluminum nitride joined to each other through a joining layer, wherein a second member is made of a material selected from a ceramic material or a metal, and the joining layer involves a continuous phase made of a metal selected from the group consisting of copper, aluminum and nickel as a main component and 10% by weight of at least one active metal selected from the group consisting of magnesium, titanium, zirconium and hafnium relative to the joining layer.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: August 22, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Tomoyuki Fujii, Ryusuke Ushikoshi
  • Patent number: 6107239
    Abstract: The present invention discloses an exhaust gas catalyst for reducing the pollutant release containing in the exhaust gas. The catalyst includes a primary-core support carrier composed of gamma-phase aluminum oxide. The core-carrier is coated with Y.sub.2 O.sub.3 and ZrO.sub.2 such that the heat resistance is greatly improved. A two-layer active catalytic structure is formed over the core-carrier. An inner catalytic layer is formed with composition active catalytic elements with approximate weight ratios of La:Ce:Mn:Co:Pd:=10-15:10-15:6-10:6-10:0.1-0.3. An outer catalytic layer is then coated over the inner catalytic layer. The outer catalytic layer comprises catalytic active elements. The weight ratio of the active catalytic elements are Y:La:Zr:Cu:Cr:V:Pd:=1-3:2-6:2-6:6-10:10-15:2-6:0.1-0.3.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: August 22, 2000
    Assignee: LuChuang Environment Protection Science Co. Ltd.
    Inventors: Jianwu Qin, Pengming Jiang
  • Patent number: 6090497
    Abstract: A wear-resistant coated member comprising 26 to 80% by weight of silicon (Si), additional components if required and necessary, the remainder being aluminum (Al), and unavoidable impurities, wherein Si is in a fine particle, and has an average particle size in the range of 0.01 to less than 10 .mu.m, and Al matrix and 3% by weight or more of Si form solid solutions. The wear-resistant coated member has excellent wear resistance and machinability.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: July 18, 2000
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hiroyuki Mori, Kazuyuki Nakanishi, Hideoki Fukushima, Hideo Tachikawa
  • Patent number: 6089825
    Abstract: An air seal for use in a gas turbine engine includes reduced susceptibility to deflagration during operating conditions in which an excessive amount of seal material is liberated from the seal and ingested into the engine. The seal includes a seal substrate, and a thermally sprayed metallic bond layer applied to the seal substrate. The bond layer includes nickel and aluminum. The seal also includes a thermally sprayed abradable seal layer applied to the bond layer. The abradable material is composed of aluminum powder and silicon powder forming a metal matrix, and co-deposited methyl methacrylate particles embedded as filler in the metal matrix. The filler is less likely to deflagrate compared to conventionally used materials such as polyester.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 18, 2000
    Assignee: United Technologies Corporation
    Inventors: Frederick Clell Walden, George Lee Crawford, William John Dalzell, Jr.
  • Patent number: 6083598
    Abstract: In an optical disk obtained by pasting two substrates, air bubbles and the like are removed from an adhesive layer between the substrates pasted together, and the thickness irregularity of the adhesive layer is suppressed to an allowable value or less. A spacer having a predetermined thickness is concentrically placed on a substrate. An adhesive is applied onto a surface of the substrate on which the spacer is placed. Another substrate is placed on the surface of the substrate on which the adhesive is applied. The substrates are rotated about the spacer at a high speed. The excessive adhesive sandwiched between the substrates is expelled, together with air bubbles and the like, by using the centrifugal force produced by the rotation. With this process, an adhesive layer having a thickness determined by the thickness of the spacer is left between the two substrates.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: July 4, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiyuki Ohkubo, Kan Nishizaka
  • Patent number: 6077585
    Abstract: An optical recording medium having at least one aluminum nitride and silicon nitride composite dielectric layer is provided. The amount of aluminum nitride in the dielectric layer, x, is more than zero and less than or equal to about 95 mol %. The amount of silicon nitride in the layer is represented as (100-x) and is equal to or greater than about 5 and less than 100 mol %. The refractive index of the composite dielectric layer is between about 1.70 and 2.15. The composite dielectric layer is sandwiched between a transparent support such as a plastic transparent support and an optical recording layer adapted to be irradiated by laser light in order to read, write or erase information in order to protect the recording layer.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: June 20, 2000
    Assignee: Seiko Epson Corporation
    Inventor: Akira Aoyama
  • Patent number: 6063469
    Abstract: A triple substrate optical disk comprises a center substrate layer, a top substrate layer, a bottom substrate layer, a top adhesion layer bonding the top substrate layer to the center substrate layer and a bottom adhesion layer bonding the center substrate layer to the bottom substrate layer. The center substrate layer has a center substrate containing a top surface and a bottom surface thereof, a first recording layer deposited on the top surface of the center substrate and a second recording layer deposited on the bottom surface of the center substrate. The top substrate layer includes a top substrate and a third recording layer, wherein the top substrate has a top surface and a bottom surface thereof and the third recording layer is deposited on the bottom surface of the top substrate.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: May 16, 2000
    Assignee: SKC Limited
    Inventors: Su-Sun Ryu, Chang-Yong Lee
  • Patent number: 6051327
    Abstract: A non-corrosive metal on aluminum or aluminum alloy lamination is disclosed including a non-corrosive metal top sheet, an aluminum or aluminum alloy substrate, and an adhesive bonding the non-corrosive metal top sheet to the aluminum or aluminum alloy substrate to provide a non-corrosive metal on aluminum or aluminum alloy lamination product having lighter weight and less cost than a sheet product of the non-corrosive metal of identical thickness, wherein the lamination product withstands galvanic corrosion between the non-corrosive metal top sheet and the aluminum or aluminum alloy substrate. In one aspect, the non-corrosive metal top sheet is stainless steel. In one aspect, the non-corrosive metal top sheet is nickel or nickel alloy.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: April 18, 2000
    Assignee: Aluminum Company of America
    Inventors: Daniel Serafin, Paul B. Schultz, Albert L. Askin, Donald J. Stanko
  • Patent number: 6045929
    Abstract: A plain bearing having a metal backing, a bearing lining secured to the backing and an overlay plated to an interlayer, which is itself plated onto the bearing lining, is disclosed. The bearing lining is formed from an alloy based on aluminum or copper. The overlay is formed of an alloy of zinc with 0.5 to 25% by weight of a metal selected from nickel, cobalt and iron, and the material of the interlayer is selected from nickel and copper.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: April 4, 2000
    Assignee: T&N Technology Limited
    Inventors: David Raymond Eastham, Charan Preet Singh Johal
  • Patent number: 6042953
    Abstract: A bi-layer bump comprises a base layer composed of sprayed aluminum thick film having a thickness of about 20 .mu.m formed to cover the periphery of the passivation film formed on each pad electrode, a surface layer composed of sprayed copper thick film having a thickness of about 30 .mu.m formed on the base layer. According to the above-mentioned structure, a substrate on which bumps are formed which has an excellent electric property and connecting reliability, wherein an interlayer insulating layer, an active layer and a multi-layer wiring can be provided under the pad electrode can be obtained.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: March 28, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazufumi Yamaguchi, Tsutomu Mitani, Mitsuo Asabe
  • Patent number: 6037099
    Abstract: Opposed faces of two disk substrates are bonded by an adhesive layer whose characteristic parameters are set in predetermined ranges, particularly in the values of a product of Young's modulus and the film thickness in a range of 1.0.times.10.sup.-2 kg/mm to 3.0 kg/mm, a product of Young's module and the thermal expansion coefficient in a range not larger than 1.5.times.10.sup.-2 kg.multidot.mm.sup.-2 .multidot..degree. C..sup.-1, or a product of the thermal expansion coefficient and the film thickness in a range not larger than 2.0.times.10.sup.-5 mm /.degree. C. Preferably, the glass transition point of the used adhesive is set to a value in a range of 20.degree. C. to 80.degree. C., and the film thickness is set to a value in a range of 10 .mu.m to 100 .mu.m.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: March 14, 2000
    Assignee: Victor Company of Japan Ltd.
    Inventors: Takashi Oogo, Junichi Iimura
  • Patent number: 6037067
    Abstract: A laminate material comprising a metal substrate and a laser overlaid layer of a high temperature abrasion resistant copper alloy suitable for the material of engine parts such as valve seats and valve guides, wherein the copper alloy consists essentially of aluminum in an amount ranging from 1.0 to 15.0% by weight; at least one element selected from the group consisting of vanadium, niobium and tantalum in the group VB of the periodic table of elements, in an amount ranging from 0.1 to 5.0% by weight; and balance containing copper and impurities. The copper alloy has a structure in which at least one of intermetallic compounds is dispersed, each intermetallic compound contains at least one metal selected from the group consisting of aluminum and copper and at least one element selected from the group consisting of elements of the group VB of the periodic table. This copper alloy exhibits also high oxidation resistance and corrosion resistance at high temperatures.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: March 14, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akira Fujiki, Makoto Kano
  • Patent number: 6022632
    Abstract: The invention includes a low activity localized aluminide coating for a metallic article made by positioning a coating material, preferably in the form of a tape, on a portion of the article. The coating material comprises a binder, a halide activator, an aluminum source, and an inert ceramic material. The coating material and the article are heated in an inert atmosphere between about 1800.degree. F. (982.degree. C.) and about 2050.degree. F. (1121.degree. C.) for between about four and about seven hours thereby producing a low activity localized aluminide coating having an outward diffusion aluminide coating microstructure characterized by two distinct zones, an inner diffusion zone and an outer zone including between about 20-28 percent, by weight, aluminum.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: February 8, 2000
    Assignee: United Technologies
    Inventors: Walter E. Olson, Norman Pietruska, Peter Jon Draghi
  • Patent number: 6020076
    Abstract: A joined ceramic structure including a ceramic member and a metallic joining member joined to each other through a joining layer made of a brazing material wherein a metallic member is buried in the ceramic member in the state that a metal-exposed portion is formed through partial exposure of the metallic member from such a joining surface of the ceramic member as contacting said joining layer, and the ceramic member and the metal-exposed portion are also joined to the joining layer along the joining surface of the ceramic member.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: February 1, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Tomoyuki Fujii, Ryusuke Ushikoshi
  • Patent number: 5993592
    Abstract: An apparatus and method for gluing disc halves together during manufacturing of data storage optical discs including a main support on which a first disc half is arranged in an elastic-deformation condition. A second disc half, optionally resiliently deformed to a conical configuration, is arranged under an auxiliary support axially opposed to the main support. An adhesive dispenser delivers an adhesive along the outer circumferential edge of the first disc half, following a rotation imparted to the dispenser about the respective axis. The dispensed adhesive spreads by gravity along the glued surface of the first disc half and is thereby evenly spread thereon. The second disc half is then lowered onto the first disc half to achieve mutual pairing of the first and second disc halves.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 30, 1999
    Assignee: Tapematic U.S.A. Inc.
    Inventor: Luciano Perego
  • Patent number: 5989733
    Abstract: A CVD outwardly grown platinum aluminide diffusion coating on a nickel or cobalt base superalloy substrate wherein the platinum modified aluminide diffusion coating is modified to include silicon, hafnium, and optionally zirconium and/or other active elements (e.g. Ce, La, Y, etc.) each in a concentration of about 0.01 weight % to about 8 weight % of the outer additive (Ni,Pt)(Al,Si) layer of the coating. A particular coating includes about 0.01 weight % to less than 2 weight % of each of silicon, hafnium, and zirconium in the outer additive layer, preferably with a Hf/Si ratio less than about 1 and, when Zr also is present, a Hf+Zr/Si ratio of less than about 1. A coating microstructure is provided characterized by an inner diffusion zone or region adjacent the substrate and the outer additive (Ni,Pt)(Al,Si) layer including hafnium silicide second phase particles or regions dispersed throughout the outer additive layer of the coating.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: November 23, 1999
    Assignee: Howmet Research Corporation
    Inventors: Bruce M. Warnes, Daniel L. Near, David C. Punola, William C. Basta
  • Patent number: 5989670
    Abstract: A multilayer optical disk having an information storage layer which can as well as be reproduced by a general purpose reproducing apparatus, for example, a compact disk player, and from which information can be read from other information storage layers by using an exclusive reproducing apparatus. The multilayer disk has a first substrate on which is formed a first information storage layer which is relatively highly reflective with respect to a light beam having a wavelength of 770-830 nm; and a second substrate on which is formed a second information layer which is relatively transparent with respect to a light beam having a first substrate on which is formed a wavelength of 770 mn to 830 nm but which is sufficiently reflective with respect to a light beam having a wavelength of 615-655 nm.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: November 23, 1999
    Assignee: Sony Corporation
    Inventors: Masahiko Kaneko, Nobuhiko Umezu, Katsuhisa Aratani, Ariyoshi Nakaoki
  • Patent number: 5980677
    Abstract: A method of laminating disc-shaped substrates which is capable of automatically bonding an adhesive agent to the disc-shaped substrates very effectively and continuously. The method of laminating disc-shaped substrates includes the steps of preparing an adhesive sheet body comprising a plurality of adhesive agents each covered with a release paper and bonded to the adhesive sheet body, peeling off the release paper from the adhesive agent, positioning each adhesive agent over a lower disc-shaped substrate, pressing the adhesive sheet body to bond the adhesive agent to the lower disc-shaped substrate, peeling off the adhesive sheet body from the lower disc-shaped substrate, placing an upper disc-shaped substrate on the lower disc-shaped substrate, and pressing the upper disc-shaped substrate against the lower disc-shaped substrate to integrally laminate the disc-shaped substrates.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: November 9, 1999
    Assignee: Kitano Engineering Co., Ltd.
    Inventors: Mikuni Amo, Youichi Nakagawa
  • Patent number: 5975852
    Abstract: A thermal barrier coating and a method for forming the coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly directed to increasing the spallation resistance of a thermal barrier coating system that includes a thermal insulating ceramic layer. The coating system of this invention generally includes a nickel aluminide alloy on which an aluminum oxide layer is formed, over which a ceramic layer is deposited so as to overlie and contact the aluminum oxide layer. The coating system does not include a bond coat, such as a diffusion aluminide or MCrAlY coating known in the prior art. The nickel aluminide alloy may be a binary NiAl alloy consisting essentially of nickel and aluminum in stoichiometric amounts, or may contain one or more oxygen-active elements.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: November 2, 1999
    Assignee: General Electric Company
    Inventors: Banalore A. Nagaraj, Jon C. Schaeffer, Mark A. Rosenzweig
  • Patent number: 5965279
    Abstract: An electrical conductor consisting of an at least partially aluminium-based central core coated by continuous electrodeposition with at least one metal layer, including pretreatment of the surface of the core, characterized in that the following are subsequently performed successively on the core,a) an electrochemical deposition of copper in an aqueous bath maintained at a temperature of between 20.degree. C. and 60.degree.C., containing KCN, CuCN, K.sub.2 CO.sub.3 and KNaC.sub.4 H.sub.4 O.sub.6 with a current intensity of between 1 and 10 A/dm.sup.2 ;b) rinsing at ambient temperature;c) an electrochemical deposition of tin in an aqueous bath maintained at a temperature of between 20.degree. C. and 60.degree. C., containing essentially tin dissolved in methanesulphonic acid and, optionally, additives, with a current intensity of between 1 and 100 A/dm.sup.2 ;d) rinsing with water at 60.degree.C.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: October 12, 1999
    Assignee: Axon'Cable SA
    Inventor: Ning Yu
  • Patent number: 5942302
    Abstract: A composition suitable for use as a polymer layer disposed on a semi-reflective layer in an optical medium, such as an optical storage medium. The polymer layer includes an acidic component that promotes adhesion of the polymer layer to the semi-reflective layer.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: August 24, 1999
    Assignee: Imation Corp.
    Inventors: Chau T. Ha, Wayne M. Hector, Cynthia J. Kwiecien
  • Patent number: 5939214
    Abstract: Composite materials for electronic packages are disclosed. The composite materials comprise a core layer and first and second cladding layers. The core and cladding layer compositions and thicknesses are selected to maximize thermal and electrical conductivity and to minimize the coefficient of thermal expansion of the composite. The composite material may be employed to fashion the package base, the leadframe, a heat spreader or combinations thereof. In one embodiment, a portion of the first cladding layer is removed so that an electronic device may be mounted directly to a high thermal conductivity core.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: August 17, 1999
    Assignee: Advanced Technology Interconnect, Incorporated
    Inventors: Deepak Mahulikar, Jacob Crane, Abid Ali Khan
  • Patent number: 5939162
    Abstract: Method and apparatus for producing a bonded composite disk including a first and a second disk component which are bonded together, using a mold including a first mold half having first concentric elements whose axial end faces cooperate with an annular information-bearing stamper or an annular blank stamper, to provide a first molding surface, and a second mold half having a second concentric elements whose axial end faces provide a second molding surface cooperating with the first molding surface to define a cavity for forming each of the first and second disk components.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: August 17, 1999
    Assignee: Kabushiki Kaisha Meiki Seisakusho
    Inventor: Ikuo Asai
  • Patent number: 5935673
    Abstract: To protect the optical surface of optical disc information recording media such as a compact disc (CD) or a digital versatile disc (DVD), that surface is coated with a removable layer of a material that does not significantly alter the optical properties of the disc. Whenever the coating layer may have become damaged, it is removed and replaced with a new layer.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 10, 1999
    Assignee: WEA Manufacturing Inc.
    Inventor: William R. Mueller
  • Patent number: 5925471
    Abstract: A plain bearing having a metal backing, a bearing lining secured to the backing and an overlay plated to an interlayer, which is itself plated onto the bearing lining, is disclosed. The bearing lining is formed from an alloy based on aluminum or copper. The overlay is formed of an alloy of zinc with 0.5 to 25% by weight of a metal selected from nickel, cobalt and iron, and the material of the interlayer is selected from nickel and copper.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: July 20, 1999
    Assignee: T&N Technology Limited
    Inventors: David Raymond Eastham, Charan Preet Singh Johal
  • Patent number: 5911949
    Abstract: An abrasion resistant copper alloy suitable for the material of an overlaid layer formed at the valve seat of an engine cylinder head formed of aluminum alloy. The copper alloy consists essentially of nickel in an amount ranging from 10 to 30% by weight; silicon in an amount ranging from 0.5 to 5.0% by weight; at least one element selected from the group consisting of molybdenum, tungsten, tantalum, niobium and vanadium, in an amount ranging from 2.0 to 15.0% by weight; and balance being copper and impurities.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: June 15, 1999
    Assignees: Nissan Motor Co., Ltd., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Ryuji Ninomiya, Takeshi Ojiro, Makoto Kano, Hidenobu Matsuyama
  • Patent number: 5906907
    Abstract: The object of the present invention is to provide an optical disc and a method of manufacturing thereof wherein defects and deterioration in the optical disc are minimized at the time of manufacture, during operation and storage thereof as well. The invention conceives an optical disc suitable for accomplishing the above object through spcifications such as providing a cross-sectional structure thereof comprising a pair of transparent substrates each provided with at least one layer of a recording film formed on the surface of information patterns thereof, with the pair being bonded and laminated with an adhesive, and further providing an instantaneous axial acceleration<2 G measured at room temperatures, a skew angle<5 mrad measured at room temperatures, and a skew angle<5 mrad measured after being left for one hour as heated to 80.degree. C. (otherwise, a shear mass<20 .mu.m measured after being left for one hour as heated to 80.degree. C.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: May 25, 1999
    Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.
    Inventors: Hiroaki Miwa, Ryoichi Sudo, Tetsuo Tajima, Eiji Koyama