Oxide-containing Component Patents (Class 428/632)
  • Patent number: 5041342
    Abstract: In a multilayered ceramic substrate having a ceramic substrate fireable in low temperatures and a metal member for input/output brazed to the ceramic substrate, an intermediate layer including a ceramic component is arranged between the ceramic substrate and the metal member in such a manner that thermal coefficients .alpha..sub.1, .alpha..sub.2 and .alpha..sub.3 between a room temperature and near a brazing temperature of the metal member, the ceramic component in the intermediate layer and the ceramic layer, respectively, maintains a relation of .alpha..sub.1 >.alpha..sub.2 >.alpha..sub.3. Moreover, the ceramic substrate fireable in low temperatures is constructed by first ceramic layer having a flexural strength more than 25 kg/mm.sup.2 and a second ceramic layer having a dielectric constant less than 7.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: August 20, 1991
    Assignee: NGK Insulators, Ltd.
    Inventors: Yuhji Umeda, Tadashi Otagiri, Go Suzuki
  • Patent number: 5035957
    Abstract: Disclosed are coated metal articles having protective coatings which are applied to substrate metals by coating the metal surface, e.g. by dipping the substrate metal in a molten alloy of the coating metals, and then exposing the coating at an elevated temperature to an atmosphere containing a reactive gaseous species which forms an oxide, a nitride, a carbide, a boride or a silicide. The coating material is a mixture of the metals M.sub.1 and M.sub.2, M.sub.1 being zirconium and/or titanium, which forms a stable oxide, nitride, carbide, boride or silicide under the prevailing conditions. The metal M.sub.2 does not form a stable oxide, nitride, carbide, boride or silicide. M.sub.2 serves to bond the oxide, etc. of M.sub.1 to the substrate metal. Mixtures of M.sub.1 and/or M.sub.2 metals may be employed. Eutectic alloys of M.sub.1 and M.sub.2 which melt substantially lower than the melting point of the substrate metal are preferred.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: July 30, 1991
    Assignee: SRI International
    Inventors: Robert W. Bartlett, Paul J. Jorgensen, Ibrahim M. Allam, David J. Rowcliffe
  • Patent number: 5029149
    Abstract: An object, which is particularly destined for use in horology or jewelry, includes a substrate which constitutes the framework and which is preferably formed from injected cast aluminium. A decorative and protective coating overlays the substrate, such coating consisting of a deposit of a first layer of aluminium in a substantially pure state and a second layer capping the first, said second layer being constituted of aluminium oxide formed from the first layer. The object may be a watch case or a bracelet link.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: July 2, 1991
    Assignee: ETA S.A. Fabriques d'Ebauches
    Inventors: Jacques Muller, Andre Triponez
  • Patent number: 5028495
    Abstract: A composite foil brazing material for joining ceramics to each other or to metal, which is made up of a core of Ti and outer layers of Ni or Ni alloy containing less than 80% of Cu, with the core and the composite foil having the respective sectional areas whose ratio is 5/10 to 9/10.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: July 2, 1991
    Assignee: Sumitomo Special Metal Co., Ltd.
    Inventors: Kenji Hirano, Minoru Suenaga, Masaaki Ishio
  • Patent number: 5023147
    Abstract: A ceramics-metal joined body which excels in high temperature characteristics and joint strength is formed by metallizing the surface of ceramics such as oxides, carbides, borides, nitrides, and composites thereof, and joining a metallic member through a solder to the metallized surface.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: June 11, 1991
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hirohiko Nakata, Takao Nishioka, Nobuya Oooka, Kenya Motoyoshi
  • Patent number: 5023146
    Abstract: Disclosed are a black surface-treated steel sheet, which comprises a steel sheet or plated steel sheet and a electrodeposited composite plating coating formed in a deposition amount of 0.1 to 5 g/m.sup.2 on the surface of the steel sheet or plated steel sheet, the plating coating containing metallic zinc or Zn--Ni alloy and oxides or hydrous oxides and sulfur compound, and a process for the preparation of a black surface-treated steel sheet, which comprises carrying out the electrolysis in an acidic aqueous solution containing Zn.sup.2+ and, as the main components, at least one member selected from the group consisting of Fe.sup.2+, Co.sup.2+ and Ni.sup.2+, and oxidative ion, and a thio compound, by electrolysis a steel sheet or plated steel sheet as the cathode, and water-washing and drying the treated steel sheet.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: June 11, 1991
    Assignee: Nippon Steel Corporation
    Inventors: Katsushi Saito, Yujiro Miyauchi, Toshimichi Murata, Yoshio Shindo
  • Patent number: 5019891
    Abstract: A semiconductor device and the method of fabricating the semiconductor device include a semiconductor substrate and a plurality of conductor films formed on the substrate. Each of the conductor films is made of aluminum alloy including at least one element selected from palladium and platinum and, more preferably, further including at least one element selected from lithium, beryllium, magnesium, manganese, iron, cobalt, nickel, copper, lanthanum, cerium, chromium hafnium, zirconium, cadmium, titanium, tungsten, vanadium, tantalum, and niobium, with a protective film which includes oxide of the selected one of palladium and platinum being formed on the side wall of the conductor film.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: May 28, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Jin Onuki, Yasushi Koubuchi, Shinichi Fukada, Katuhiko Shiota, Kunio Miyazaki, Tatsuo Itagaki, Genji Taki
  • Patent number: 5019458
    Abstract: The invention provides a protected silvered substrate of the type comprising in combination, a substrate having a layer of substantially silver deposited thereon, a layer of aluminum oxide secured to the silver layer, and a layer of silicon dioxide secured to the layer of aluminum oxide, characterized by a layer of zinc sulfide between the layer of substantially silver and the layer of aluminum oxide to improve the adhesion of the alumina to the silver and front surface mirrors and low emissivity glass utilizing the same.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: May 28, 1991
    Assignee: Luz Industries Israel, Ltd.
    Inventors: Zvi Elgat, Joel P. Warschawski
  • Patent number: 5017439
    Abstract: A process for treating the surface of a die-cast article including the steps of chemically cleaning the surface, cleaning the surface with an argon plasma, depositing an ion vapor generated metallic coating, mechanically treating the deposited coating, and chromate converting the mechanically treated coating. Preferably, the die-cast metal article consists essentially of an aluminum or magnesium alloy while the metallic coating is aluminum. The mechanical treatment may be carried out by bead blasting, tumbling or barreling and may be followed by walnut shell polishing.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: May 21, 1991
    Assignee: Seagate Technology, Inc.
    Inventors: Amarjit S. Brar, Prativadi B. Narayan
  • Patent number: 5015537
    Abstract: An improved ornamental member including at least two types of Cr or Ti hard films of different color tones disposed by ion plating on a substrate is prepared. The laminate includes a combination of Cr and Ti hard films including a stainless steel colored Cr hard film layer containng Cr, N and C as the main constituents, a gold colored Ti hard film having Ti and N as the main constitutents, a dark grey Ti hard film having Ti, N and C as the main constituents, a blue Ti hard film having Ti and O as the main constituents and a brown Ti hard film having Ti, O and C as the main constituents. The thickness of a single year of hard film is between about 0.2 and 1.5 .mu.m and the total film thickness at the laminated portion is less than about 3 .mu.m. Preferably, each hard film layer is between about 0.2 and 0.8 .mu.m.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: May 14, 1991
    Assignee: Seiko Epson Corporation
    Inventors: Akira Uchiyama, Kiyohiro Imai
  • Patent number: 5015536
    Abstract: A metal shaft is joined to a permanent magnet by a seal formed of a thin layer of a metal on the magnet which forms a bond with the magnet. A layer of a solorable metal provided on the thin layer and a layer of a low melting point solder contacting the metal shaft and layer of solderable metal.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: May 14, 1991
    Assignee: North American Philips Corporation
    Inventors: Richard C. Sweet, Jose M. I. Azevedo, Robert L. Bronnes
  • Patent number: 5013612
    Abstract: An improved active metal braze filler material is provided in which the coefficient of thermal expansion of the braze filler is more closely matched with that of the ceramic and metal, or two ceramics, to provide ceramic to metal, or ceramic to ceramic, sealed joints and articles which can withstand both high temperatures and repeated thermal cycling without failing.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: May 7, 1991
    Assignee: Ford Motor Company
    Inventors: Thomas K. Hunt, Robert F. Novak
  • Patent number: 5011745
    Abstract: Process for the production of contact strips on substrates, especially on plates of mineral glass. These substrates are provided with an electrically conductive surface coating which is coated on the side facing away from the substrate with at least one surface layer of a dielectric material. For the production of the contact strips, a noble metal suspension in a liquid is deposited according to the invention on the surface layer in the pattern of the contact strips. Then the substrate with the pack of layers is exposed to a heat treatment at at least 100.degree. C. until a lowered total resistance occurs through the conductive surface coating between the contact strips.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: April 30, 1991
    Assignee: Leybold Aktiengesellschaft
    Inventors: Anton Dietrich, Klaus Hartig, Hans-Christian Schaefer, Joachim Szczyrbowski
  • Patent number: 5011744
    Abstract: A colored zinc composite-plated steel sheet which comprises a steel sheet or a plated steel sheet, a colored composite-plating film comprising zinc and an oxide of a coloring metal such as nickel, cobalt, iron, chromium, tin or copper and provided on the steel sheet at a coverage of 0.1-5 g/m.sup.2 and a transparent guard coat of 3 .mu.m or less thick provided on the film is obtained by carrying out electrolysis in an acidic aqueous solution containing zinc ion, a coloring metal ion and nitrate ion, nitrite ion, perchlorate ion, chlorate ion, condensed phosphate ion and having a pH of 1-4 using the steel sheet or plated steel sheet as a cathode at a current density of 5-100 A/dm.sup.2 and a current quantity of 20-200 coulomb/dm.sup.2.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: April 30, 1991
    Inventors: Katushi Saito, Yoshio Shindou, Toshimichi Murata, Fumio Yamazaki, Takashi Shimazu
  • Patent number: 5009966
    Abstract: The invention discloses a coated substrate product comprised of a titanium of titanium alloy substrate, at least one thin interlayer composed of a non-reactive noble metal and a hard outer coating selected from the group comprised of a ceramic, a hard metal, a hard metal compound and a diamond-like carbon, wherein at least the non-reactive noble metal interlayer which is immediately adjacent to the titanium or titanium alloy substrate is deposited onto the substrate by means of an electroless plating procedure, and the hard outer coating is deposited onto the non-reactive interlayer(s) by means of known chemical and physical vapor deposition techniques. The invention also discloses a method for making these coated substrate products.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: April 23, 1991
    Inventors: Diwakar Garg, Carl F. Mueller, Leslie E. Schaffer, Paul N. Dyer
  • Patent number: 5006419
    Abstract: A structural component of titanium or titanium alloy is provided with a protective coating made substantially of an oxidation resistant and diffusion inhibiting base layer (2), an intermediate layer (3) forming a titanium fire inhibiting layer, and a cover layer (4) forming a passivating sealing layer. These layers are applied by various methods.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: April 9, 1991
    Assignee: MTU Motoren-und Turbinen-Union Muenchen GmbH
    Inventors: Richard Grunke, Lothar Peichl, Franz Puchinger, Gerhard Wydra
  • Patent number: 5001019
    Abstract: Joined ceramic and metal is characterized by ceramic and metal thermally joined through an intermediate layer. The intermediate layer is composed of 20-70% by weight of silver, 1-20% by weight of palladium, 10-60% by weight of nickel and 1-10% by weight of titanium. The joined ceramic and metal has sufficient joining strength both at normal temperature and at high temperature, because the joined ceramic and metal suffers little deterioration even at high temperature. Since the joined ceramic and metal has the characteristics of ceramic such as resistance to heat, corrosion and wear, it can be used for a structure operated at high temperature such as a gas turbine engine, a turbo charger rotor, a piston, a suction valve, and an exhaust valve.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: March 19, 1991
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Masaya Ito, Katsumi Miyama
  • Patent number: 4999258
    Abstract: Surface treated steel sheets having excellent rust resistance and weldability, suitable for manufacturing various kinds of cans, produced by a process comprising applying 0.2 to 1 g/m.sup.2 of tin coating on a surface of a nickel coated cold rolled steel sheet, applying 0.01 to 0.3 g/m.sup.2 of zinc coating on the tin coating in such an amount that the ratio of the zinc coating amount to the tin coating amount is in a range from 2 to 30% by weight, and heating the coatings to alloy substantially all of the zinc into the tin coating layer with substantially no non-alloyed zinc left on the tin coating.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: March 12, 1991
    Assignee: Nippon Steel Corporation
    Inventors: Ryousuke Wake, Kazuya Ezure
  • Patent number: 4996116
    Abstract: A direct (metal-metal compound eutectic) bond process is improved by disposing a eutectic/substrate-wetting enhancement layer on the substrate prior to performing the direct bond process to bond a metal foil to the substrate. Where the metal is copper, the direct bond process is rendered more effective than prior art direct bond processes on alumina and beryllia and makes the direct bond process effective on tungsten, molybdenum and aluminum nitride, all of which were unusable with the prior art direct bond copper process. A variety of new, useful structures may be produced using this process. The eutectic/substrate-wetting enhancement layer is preferably a noble-like metal or includes a noble-like metal such as platinum, palladium and gold.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: February 26, 1991
    Assignee: General Electric Company
    Inventors: Harold F. Webster, Constantine A. Neugebauer, James F. Burgess
  • Patent number: 4985313
    Abstract: An article of manufacture, for example a conductor for an electrical wire or cable, is provided with a refractory coating preferably formed from a refractory metal or semi-metal oxide or nitride and preferably deposited on the surface of the article by a vacuum deposition process such as a sputter ion plating method. Adhesion of the refractory coating, especially at high temperatures may be improved, and migration of the substrate metal through the coating may be suppressed by varying the stoichiometry of the coating through its thickness and/or by the provision of a metallic or refractory intermediate layer. The articles are particularly suitable for use in circuit and signal integrity cables.The vacuum deposited refractory layer may constitute the sole refractory, or additional refractory layers may be deposited by other methods e.g. a sol-gel method.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: January 15, 1991
    Assignee: Raychem Limited
    Inventors: Richard J. Penneck, James M. O'Brien, Stephen J. Duckworth, Nicholas J. G. Smith
  • Patent number: 4985312
    Abstract: The invention provides a heat reflecting glass plate with a multilayer coating on a transparent glass plate. The multilayer coating comprises a film of indium-tin oxide (ITO) of Al=N deposited on the glass surface, a heat reflective film of Ag or Cu deposited on the ITO or AlN film to a thickness of 40-200 .ANG., a metal Zn film deposited on the Ag or Cu film to a thickness of 20-200 .ANG. and an ITO or AlN film as the outermost layer. The multilayer coating may further comprise at least one set of the Ag or Cu film, metal Zn film and ITO or AlN film such that each Ag or Cu film overlies an ITO or AlN film and is overlaid with a metal Zn film and that the outermost layer is an ITO or AlN film. The multilayer coating is excellent in the fundamental characteristics as a heat reflecting and transparent coating and also in moisture resistance.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: January 15, 1991
    Assignee: Central Glass Company, Limited
    Inventors: Koichi Furuya, Hiroshi Nakashima, Yasunobu Iida, Nobuyuki Takeuchi, Masato Nakamura
  • Patent number: 4983576
    Abstract: A superconducting structural body comprisinga superconducting ceramics anda metal sheath surrounding the superconducting ceramics,the metal sheath includingan Ag portion anda non-Ag metal portion, the Ag portion existing from inner to outer faces of the metal sheath, and the superconducting ceramics portion existing in the structural body and the non-Ag metal portion used as a structural material for the metal sheath as the outermost indirectly contacting each other through the Ag material.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Sadaaki Hagino, Motokazu Suzuki, Shigeru Nishikawa, Kenichi Hayashi
  • Patent number: 4978586
    Abstract: The invention relates to a steel substrate with metal coatings for the reinforcement of vulcanizable elastomers, as well as a method for the continuous manufacture of a thus coated substrate and elastomer objects reinforced with said substrate.The substrate is provided with a first coating and a second coating at least covering part of the first one and a bonding layer being present between the two said coatings. The second coating comprises e.g. cobalt that can be applied by plasma sputtering. The coating combination can be easily adapted to the specific elastomer compositions and the reinforcement requirements aimed at.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: December 18, 1990
    Assignee: N. V. Bekaert S.A.
    Inventors: Daniel Chambaere, Wilfred Coppens, Hugo Lievens, Roger De Gryse, Robert Hoogewijs, Joost Vennik, Lucien Fiermans
  • Patent number: 4970126
    Abstract: This invention relates to a highly corrosion-resistant, multi-layer coated steel sheet, and includes an undercoat film obtained by galvanization or zinc-alloy plating and a chromate coated film thereon, on which a resin-composition film is further applied, comprising an organic high-molecular weight resin having a glass transision temperature of 343.degree. to 423.degree. K. and soluble in organic solvent and hydrophobic silica.For the purpose of improvement of corrosion preventiveness, a sparingly water soluble Cr compound may be contained in this resin composition film. Together with this sparingly water soluble Cr compound, a di- or tri-alkoxysilane compound may be also contained in the resin composition film.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: November 13, 1990
    Assignees: Nippon Kokan Kabushiki Kaisha, Kansai Paint Co., Ltd.
    Inventors: Takeshi Adaniya, Masaaki Yamashita, Takahiro Kubota, Norio Nikaido, Yoshiaki Miyosawa, Tadashi Nishimoto, Kazuhiko Ozawa
  • Patent number: 4966816
    Abstract: A pack assembly for use in hot rolling a material sensitive to heat loss, such as gamma titanium aluminide. The pack assembly has a pair of opposed deformable metal cover plates adjacent opposite outer major surfaces of at least one flat product of the material to be hot rolled positioned between the cover plates. A continuous thermal barrier is positioned between each of the outer major surfaces of each of the cover plates.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: October 30, 1990
    Assignee: Titanium Metals Corporation of America (TIMET)
    Inventors: Tommie L. Wardlaw, Paul J. Bania
  • Patent number: 4963974
    Abstract: The present invention relates to an electroless gold plating solution, a method of plating by using the same, and an electronic device plated with gold by using the same.According to the present electroless gold plating solution, the plating solution components contain no cyanide ions, the amount of a reducing agent used is small, and gold plating can be carried out without causing the gold plating on conducting paths having a fine interval between them to short-circuit the conducting paths.Therefore, according to the method of gold plating by using said electroless gold plating solution, a plating method that is safe in the plating work and in the treatment of its waste liquor can be accomplished. The method has a feature that the method can provide an electronic device on which parts can be mounted highly densely, and wherein the joint reliability to the parts is high.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: October 16, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Jiro Ushio, Osamu Miyazawa, Akira Tomizawa, Hitoshi Yokono, Naoya Kanda, Naoko Matsuura, Setsuo Ando, Hiroaki Okudaira
  • Patent number: 4959277
    Abstract: The present invention relates to a process for surface treatment for cathodic electrodeposit coating of a zinc-plated or zinc alloy-plated steel sheet comprising coating and drying a protective coating material on said steel sheet chromate-treated beforehand, to form a protective film before subjecting the sheet to the cathodic electrodeposit coating, which comprises coating a protective coating material having as a principal constituent of film-forming organic component a block isocyanate-containing prepolymer containing in one and the same molecule respectively at least one blocked isocyanate group, hydroxyl group, and tertiary amono group and containing 10-100 parts by weight of silica sol relative to 100 parts by weight of said prepolymer, in an amount of 0.3 g-4 g/m.sup.2, and then heat-drying the same.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: September 25, 1990
    Assignees: Nihon Parkerizing Co., Ltd., Mitsubishi Kasei Corporation
    Inventors: Kenshi Saeki, Takao Ogino, Noriaki Yoshitake, Takumi Honda, Akira Nishihara, Hiroshi Okita, Yukio Tsuge, Haruo Iizuka
  • Patent number: 4957594
    Abstract: A zinc- or zinc alloy-coated steel sheet having an excellent spot-weldability, comprising: a base steel sheet; one or more layers coated on the steel sheet, at least one of the coated layers containing zinc as a major component; and an oxidized layer formed on the outermost of the coated layers and containing zinc in an amount of from 0.03 to 3.0 g/m.sup.2, the oxidized layer containing at least one of zinc oxide and zinc hydroxide.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: September 18, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Kazumasa Yamazaki, Yaichiro Mizuyama, Takashi Horita, Shinichi Suzuki
  • Patent number: 4948678
    Abstract: The present invention provides an organic composite plated steel sheet highly susceptible to cationic electrodeposition comprising a steel substrate plated with one selected from the group consisting of zinc, a zinc alloy, a zinc composite alloy, or aluminum, and a first layer of a less soluble chromate film having a water soluble content of 5% or less formed on the substrate in an amount of 10 to 150 mg as the total amount of chromium per square meter, and a second layer as a solid thin coating film of 0.1 to 2 .mu.m formed on the first layer, the second layer being formed with a coating composition containing 10 to 50% by weight of solids comprising:(a) 30% by weight or more of a bisphenol A type epoxy resin having a number average molecular weight of 300 to 100,000 based on the total solids in the coating composition;(b) a weight ratio of at least one curing agent selected from the group consisting of polyisocyanate compounds and block polyisocyanate compounds to the epoxy resin solid of 0.1 to 2.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: August 14, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Yoshio Shindou, Takashi Shimazu
  • Patent number: 4940495
    Abstract: A light transmitting electrically conductive stacked film, useful as a light transmitting electrode, including a first light transmitting electrically conductive layer, having a first optical thickness, a second light transmitting layer, having a second optical thickness different from the optical thickness of the first layer, and an electrically conductive metallic layer interposed between and in initimate contact with the first and second layers.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: July 10, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael F. Weber, Nang T. Tran, Frank R. Jeffrey, James R. Gilbert, Frank E. Aspen
  • Patent number: 4929514
    Abstract: A magnetic thin film materials system (10, 10') is provided, comprising a thin magnetic film (16) formed on a non-magnetic underlayer (14) formed on a substrate (12). In particular, the magnetic film comprises a composition consisting essentially of CoCrPt, with Cr ranging from about 10 to 20 at %, Pt ranging from about 1 to 20 at % and the balance Co. The underlayer consists essentially of chromium. The magnetic layer ranges in thickness from about 200 to 1,200 .ANG., while the non-magnetic underlayer ranges in thickness from about 500 to 5,000 .ANG.. The platinum control film coercivity, while chromium provides corrosion resistance. In addition, chromium controls the recorded magnetic transition noise properties. An increase in Cr content in these alloys beyond about 10 at % increases the corrosion resistance and unexpectedly lowers the transition noise significantly. Coercivities of from about 500 to greater than 2,000 Oe and magnetization-thickness products from 1 to 6.times.10.sup.-3 emu/cm.sup.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: May 29, 1990
    Assignee: Hewlett-Packard Company
    Inventors: Bangalore R. Natarajan, Robert G. Walmsley
  • Patent number: 4927714
    Abstract: The coated article includes a refractory metal substrate having an oxidation resistant intermetallic layer formed in situ thereon; e.g., a fused refractory metal silicide layer, and a ceramic layer applied on and adhering to the intermetallic layer to provide enhanced high temperature properties and improved resistance to premature catastrophic failure in high temperature oxidizing environments where dissimilar materials are present that may destructively react with the intermetallic layer.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: May 22, 1990
    Assignee: Barson Corporation
    Inventor: Seymour Priceman
  • Patent number: 4923764
    Abstract: An article having a colored surface comprises an article having a working surface and a coating applied on the working surface comprising a cermet composed of alumina and one of chromium and nichrome and exhibiting a black silver color.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: May 8, 1990
    Assignee: Seikosha Co., Ltd
    Inventors: Kouji Hirose, Hitoshi Ito, Kazuhito Yoshida
  • Patent number: 4917968
    Abstract: A structure which is resistant to corrosion at high temperatures comprises a ductile layer of a platinum group metal, such as iridium, and a layer of a refractory metal having a high strength at high temperatures, such as rhenium. A solid solution of the two metals is present between and metallurgically bonded to the two metal layers. Further, the structure may include a layer of ceramic such as zirconia or hafnia on the exposed face of the platinum group metal layer.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: April 17, 1990
    Assignee: ULTRAMET
    Inventors: Robert H. Tuffias, John Harding, Richard Kaplan
  • Patent number: 4916002
    Abstract: A microminiature tip and tip assembly is fabricated using microelectronic fabrication techniques. A masking aperture is formed in a dielectric layer which overlies a (100) silicon substrate. For a square aperture, a pyramidal pit is anisotropically etched into the surface of the silicon substrate. Tungsten is selectively deposited in the pit to form a pyramid-shaped microminiature point. Continued deposition of tungsten fills the aperture to form a base portion of the tip which integrally locks the tip to the dielectric layer, which is fabricated to form a support member for the tip.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: April 10, 1990
    Assignee: The Board of Trustees of the Leland Jr. University
    Inventor: Thomas E. Carver
  • Patent number: 4916022
    Abstract: A ceramic thermal barrier coating system for superalloy components subjected to high operating temperatures, such as gas turbine engine airfoils, is disclosed which includes a titania doped interfacial layer between the metallic substrate and the ceramic overcoat in order to better resist failure by spalling.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: April 10, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Patricia A. Solfest, Thomas E. Strangman
  • Patent number: 4913980
    Abstract: A method of protecting ferrous metal structures from oxidative attack in an aqueous, corrosive, oxidative environment by applying a thin, impervious coating of an oxide of titanium, zirconium, tantalum or niobium (or a mixture of two or more such oxides). The coating is applied as an alloy (preformed or form in situ) of the respective metal and a more noble metal such as nickel, cobalt, copper or iron and the alloy is preferably thermally oxidized under conditions to oxidize the titanium, zirconium and/or niobium without oxidizing the more noble metal, which serves to bind the oxide coating to the substrate. Alternatively the alloy may be applied, and then oxidized by the conditions of use.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: April 3, 1990
    Assignee: S R I International
    Inventors: David J. Rowcliffe, Ibrahim M. Allam, Paul J. Jorgensen
  • Patent number: 4913973
    Abstract: The present invention is directed to a novel anode suitable for producing high purity, pore-free coper foil at high speed and low cost under severe conditions. The anodes of the present invention are capable withstanding high acid concentrations, current densities and temperatures which would rapidly destroy the prior art anodes. This is accomplished by producing the anodes of the present invention by a new and novel process which results in structural superior anodes. The anodes of the present invention are produced by first electrodepositing on a valve metal substrate platinum to a thickness of at least about 150 microinches to about 400 microinches. The next step in the process involves "densification" of the platinum layer by heat treatment so as to close the pores of the platinum layer. This results in a substantially closed pore platinum layer.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: April 3, 1990
    Assignee: Engelhard Corporation
    Inventor: Mark J. Geusic
  • Patent number: 4910097
    Abstract: A corrosion preventive steel sheet having an organic coating layer is described. The steel sheet is comprised of a zinc alloy-plated steel sheet, and a chromate layer and an organic coating layer formed in this order on at least one side of the steel sheet. The organic coating layer is formed from a coating composition comprised of 100 parts by weight of a water-soluble urethane resin and from 5 to 80 parts by weight of colloidal silica. A method for making the corrosion preventive steel sheet is also described.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: March 20, 1990
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Shingo Nomura, Hirohiko Sakai, Kanji Nakamura, Etuo Yamamoto
  • Patent number: 4910095
    Abstract: An electroplated composite steel strip having a high corrosion resistance comprises a steel strip substrate and a corrosion resistant coating layer which comprises at least a base plating layer comprising a zinc-based metal matrix, a number of corrosion-preventing fine solid particles consisting essentially of core fine particles of, for example, chromate, phosphate, aluminum, molybdenum or titanium compounds, and encapsulated by very thin coating membranes consisting of, for example, SiO.sub.2, Al.sub.2 O.sub.3, ZrO.sub.2 or TiO.sub.2, and optionally a number of additional fine particles consisting essentially of, for example, SiO.sub.2, TiO.sub.2, Cr.sub.2 O.sub.3, Al.sub.2 O.sub.3, ZrO.sub.2, SnO.sub.2 or Sb.sub.2 O.sub.5.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: March 20, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Teruaki Izaki, Makoto Yoshida, Masami Osawa, Seijun Higuchi, Sato Hisaaki
  • Patent number: 4902581
    Abstract: A transparent article for reflecting solar energy comprising a metal oxide film which exhibits color by absorption and interference effects and a highly reflective metal film is disclosed along with a sputtering method for its production.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: February 20, 1990
    Assignee: PPG Industries, Inc.
    Inventor: Russell C. Criss
  • Patent number: 4898789
    Abstract: A multiple-layer, high transmittance, low emissivity coated article is disclosed comprising at least two infrared reflective metal layers alternatingly combined with at least three metal oxide antireflective layers to produce a coating with superior low emissivity and low visible reflectance, especially for use to reduce heat load in automobiles.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: February 6, 1990
    Assignee: PPG Industries, Inc.
    Inventor: James J. Finley
  • Patent number: 4898791
    Abstract: In a solderable layer system in which a conductor layer which is partially covered with a layer of solder is applied to a support, the solder layer consists of an alloy in which a reducing agent is contained. The alloy is preferably brass.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: February 6, 1990
    Assignee: VDO Adolf Schindling AG
    Inventor: Dieter Schurig
  • Patent number: 4898790
    Abstract: A multiple-layer, high transmittance, low emissivity coated article which can be subjected to high temperature processing such as bending, annealing, tempering, laminating or glass welding as a result of primer layers comprising metal and metal oxide is disclosed.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: February 6, 1990
    Assignee: PPG Industries, Inc.
    Inventor: James J. Finley
  • Patent number: 4891273
    Abstract: A multiple coated composite steel strip having an excellent corrosion (rust) resistance, weldability and paint adhesion, and thus useful for car bodies, comprises a steel strip substrate, a first metal coating layer, a second chlorate coating layer formed by an electrolytic chromate treatment method, containing 40 to 120 mg/m.sup.2 of chromium and having a content of Cr.sub.2 O.sub.3 of 45% by weight or more, and a third resinous coating layer comprising a homopolymer or copolymer of acrylic acid, methacrylic acid, acrylic acid ester or methacrylic acid ester and 15% to 40% of colloidal silica particles having a very small size of 1 to 12 m .mu.m.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: January 2, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Hisao Odashima, Yoshihiko Hirano, Teruyoshi Hiraoka
  • Patent number: 4889775
    Abstract: The present invention relates to a highly corrosion resistant surface-treated steel plate. The steel plate of the invention comprises a zinc deposition or zinc alloy deposition film as the undercoat deposition layer, a chromate film formed on the undercoat deposition layer and a film of a resin composition formed on the chromate film. This resin composition comprises a substrate resin formed by adding at least one basic nitogen atom and at least two primary hydrogen groups to terminal of an epoxy resin, silica and sparingly water soluble Cr compound. The resin composition may comprise a polyisocyanate compound as the curing agent. Moreover, the resin composition may comprise a silane compound as the crosslinking agent for the substrate resin and silica.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: December 26, 1989
    Assignees: Nippon Kokan Kabushiki Kaisha, Kansai Paint Co., Ltd.
    Inventors: Takeshi Adaniya, Masaaki Yamashita, Takahiro Kubota, Akira Enatsu, Norio Nikaido, Yoshiaki Miyosawa, Tadashi Nishimoto
  • Patent number: 4886712
    Abstract: The suitability of the kind of steel strip known as black plate, optionally coated with small quantities of tin or nickel for food packaging, is greating improved by ensuring the presence of a layer of P-type semiconducting oxide on the surface thereof.The quality of the plate is yet further improved by coating the oxide surface with a thin chromic passivation layer that also contains a P-type semiconducting oxide.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: December 12, 1989
    Assignee: Nuova Italsider S.p.A.
    Inventors: Nazzareno Azzerri, Leonardo Giorgi
  • Patent number: 4885215
    Abstract: An exterior stainless steel sheet is provided comprising a stainless steel substrate and a coating layer formed on one surface of the steel substrate from Al, Al alloy, Zn or Zn alloy to a thickness of 0.1 to 70 .mu.m, preferably 1 to 70 .mu.m. A Zn or Zn-Ni alloy plated stainless steel strip is prepared by degreasing a stainless steel strip, substantially activating the surface of the strip, and electroplating the strip in a zinc or zinc-nickel alloy plating bath at pH 3.5 or lower. During electroplating of one side, the other side of the strip not to be plated is covered with a protective film. A stainless steel sheet comprising a stainless steel substrate and a coating layer formed on one surface of the steel substrate from Zn or Zn alloy to a thickness of 0.1 to 50 .mu.m, preferably 1 to 50 .mu.m is useful in preparing welded pipes.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: December 5, 1989
    Assignee: Kawasaki Steel Corp.
    Inventors: Keiichi Yoshioka, Kenji Watanabe, Yasushi Kato
  • Patent number: 4885213
    Abstract: A sprayed member which has a ceramic-sprayed layer formed on the surface of a parent material of an aluminum alloy through a sprayed bond layer. A diffusion layer occupies 20 to 50% of the entire interface between the bond layer and the parent material. The interface between the diffusion layer and the parent material and the interface between the bond layer and the parent material are finely roughened to have a height of several microns. The diffusion layer and the fine roughness are formed by preheating the surface of the parent material at a temperature ranging from 260.degree. to 500.degree. C. prior to spraying the parent material with a material for the bond layer so that they can together enhance the adherency between the bond layer and the parent material.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: December 5, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noritaka Miyamoto, Miyuki Koujiya, Joji Miyake, Takashi Iomoda, Hidetoshi Ohsawa, Tetsuo Nagami
  • Patent number: 4883721
    Abstract: A multi-layer of thin film for application to a transparent substrate such as glass provides excellent visible light transmission while controlling both near infra-red solar energy and far infra-red reflected energy. The film comprises a layer of sputtered zinc, tin, or bismuth oxide, a layer of sputtered silver or silver alloy, a layer of sputtered titanium or stainless steel and a final layer of zinc, tin, or bismuth oxide. The product exhibits a nominal visible light transmittance of 55% and a reflectance less than about 15% for incident light on the substrate (glass) side at visible light wavelengths and reflectance less than about 6% for incident light on the film side in the visible wavelengths. Emissivity is less than 0.15. A method of fabricating the product is also disclosed.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: November 28, 1989
    Assignee: Guardian Industries Corporation
    Inventors: Raymond Nalepka, Russell Huffer