Next To Group Viii Or Ib Metal-base Component Patents (Class 428/652)
  • Patent number: 5441788
    Abstract: A magnetic recording disk has a layered structure comprising a metal substrate, a layer of NiP atop the metal substrate, the NiP layer having a surface roughness of less than 2.0 nanometers RMS, a metal layer over the polished NiP layer, the metal layer having a desired textured outer surface as a result of the sputter deposition, the textured outer surface being characterized by a cobblestone-like metallic grain structure with between 10 and 100 grains per square micron, an RMS surface roughness of between 1.0 and 8.0 nanometers, and with peak heights as measured from the mean plane of the surface over a 10 micron square area of between 2.0 and 20.0 nanometers, a magnetic layer atop the metal layer.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: August 15, 1995
    Assignee: Hewlett-Packard Company
    Inventors: Darrel R. Bloomquist, Stephan P. Howe, Arun K. Agarwal
  • Patent number: 5437746
    Abstract: An aluminium alloy sheet for various discs having good platability is described. The alloy consists essentially of 2 to 6 wt % of Mg, 0.1 to 0.5 wt % of Zn, 0.03 to 0.40 wt % of Cu, 0.01 to 0.30 wt % of Fe and the balance of Al.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: August 1, 1995
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Eiki Usui, Masahiro Kawaguchi
  • Patent number: 5434012
    Abstract: A slide bearing which is preferably used in combination with a low-rigid aluminum alloy housing. The slide bearing has a high coefficient of thermal expansion so that it can satisfactorily follow up deformation of the housing, and the bearing also has an excellent heat radiation property. In the slide bearing, an overly bearing layer having a thickness of 3 to 50 .mu.m is provided on a copper alloy layer having a coefficient of thermal expansion of 15.times.10.sup.-6 /.degree.C. or more, a coefficient of thermal conductivity of 0.40 cal/cm sec .degree.C. or more and 0.2% proof stress of 295N/mm.sup.2 or more. As occasion demands, the slide bearing may be (1) provided with an intermediate layer between the copper alloy layer and the overlay bearing layer, or (2) flash-plated on an entirety surface of the bearing.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: July 18, 1995
    Assignee: Daido Metal Company, Ltd.
    Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Yoshikazu Mizuno, Tohru Kato
  • Patent number: 5432013
    Abstract: A sliding bearing has a back metal made of a copper alloy which has a high followability with respect to deformation of a light alloy housing, and with this construction, the sliding bearing is excellent in fretting resistance and migration resistance. The multi-layer sliding bearing for a light alloy housing includes an aluminum alloy bearing layer, and a back metal layer, the back metal layer being made of a copper alloy which has a thermal expansion coefficient of not less than 15.times.10.sup.-6 /.degree.C., a 0.2% yield strength of not less than 295 N/mm.sup.2 and a heat transfer coefficient of not less than 0.40 Cal/cm.cndot.sec.cndot..degree.C. A Pb-alloy overlay layer can be formed on the bearing layer. A bonding layer can be formed between the bearing layer and the back metal layer. A flash plating layer can be formed on an entire surface of the bearing.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: July 11, 1995
    Assignee: Daido Metal Co., Ltd.
    Inventors: Tadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Yoshiaki Sato, Tohru Kato
  • Patent number: 5424127
    Abstract: The invention relates to a ribbon or bead for coating by torch spraying and its use For depositing a quasi-crystalline phase on a substrate. The bead or ribbon (1) comprises a core having an organic binder and a powder or a mixture of powders able to Form a quasi-crystalline alloy, said core being surrounded by an organic material sheath. It makes it possible to deposit a quasi-crystalline alloy on a substrate whilst preparing said alloy in the flame (3) of a spraying apparatus and using commercial powders of the constituents of the quasi-crystalline alloy.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: June 13, 1995
    Inventors: Jean-Marie Dubois, Maurice Ducos, Robert Nury
  • Patent number: 5419972
    Abstract: An improvement is proposed for a frame-supported pellicle for dustproof protection of a photomask, which consists of a rigid frame and a transparent plastic membrane adhesively bonded to one end surface of the frame in a slack-free fashion, used in the photolithographic patterning work for the manufacture of fine electronic parts and devices. The improvement is obtained by providing the whole surface of the pellicle frame made from an alluminum alloy with a metallic plating layer of nickel or chromium so as to completely solve the heretofore unavoidable problem by the dust particle deposition on the pellicle membrane during transportation and handling as a consequence of dust particle formation by contacting with the inner surface of the holder case by virtue of the extremely high smoothness of the metal-plated frame surface.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: May 30, 1995
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Sakae Kawaguchi, Yuichi Hamada, Toru Shirasaki, Yoshihiko Nagata, Meguru Kashida, Yoshihiro Kubota
  • Patent number: 5415945
    Abstract: A dielectric ceramic composition for low temperature sintering according to the invention is a composition which is a solid solution having two components of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 and at least one additive component of Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3 and Pb(Cu.sub.1/3 Nb.sub.2/3)O.sub.3, and the mol percents of the components fall within the following ranges: Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 75.0-85.0; PbTiO.sub.3 0-15.0; at least one of Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3 and Pb(Cu.sub.1/3 Nb.sub.2/3)O.sub.3 5.0-16.5. Further, at least one of oxides of Mn, Mg, and Ca below 0.5 mol percent may be added to the above composite.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: May 16, 1995
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takeshi Azumi, Yasunobu Yoneda, Hiroshi Morii
  • Patent number: 5413838
    Abstract: Disclosed is a both-side roughened copper foil with a protection film, comprising a metal foil as soft as or softer than copper, or an organic type film having a melting point equal to or higher than a lamination temperature, laminated on one side of a copper foil with both sides roughened, the metal foil or organic film being continuously or continually bonded or adhered to the copper foil. It is possible to protect the ruggedness on the roughened surface at the time the both-side roughened copper foil is cut, packed, transported or stacked on another both-side roughened copper foil, simplify the press molding work, and improve the production efficiency particularly in the step of fabricating a copper-clad laminated board for a printed circuit board as well as the quality of the acquired copper-clad laminated board.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: May 9, 1995
    Assignees: Sumitomo Bakelite Company Limited, Circuit Foil Japan Co., Ltd.
    Inventors: Keiji Azuma, Kimikazu Katoh, Ryoichi Oguro
  • Patent number: 5389452
    Abstract: The object of the present invention is to provide an aluminum plate for fabrication which has an excellent formability, easy degrease after fabrication, coating properties, and less tendency of flawing, in which the aluminum plate for fabrication which is plated, and coated with a lubricant containing (A) a fatty acid ester of polyol, (B) an alkaline or alkaline metal salt of sulfonate, and (C) a controlling agent, and having saponification value of 20 or more.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: February 14, 1995
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Hiroki Nakajima, Kimikazu Ikemoto, Yoshirou Tomioka, Yutaka Suzuki, Shinichiro Nakamura, Masaru Adachi, Yuzo Kawakami, Kuniaki Matsui, Tsuneharu Mori
  • Patent number: 5352501
    Abstract: A longitudinal magnetic recording medium comprising a non-magnetic substrate having a texture with a arithmetric average roughness Ra in a circumferential direction of at least 20 .ANG. and a magnetic alloy layer comprising cobalt and chromium as the main components, formed on the substrate, wherein the magnetic alloy layer has (i) a feature that when the orientation degree of the hcp crystal structure is represented by the diffraction ray intensity of electron diffraction by transmission electron diffractiometry, the intensity ratio of the electron diffraction ring in the Co (002) plane between the circumferential direction and the radial direction of the substrate is at least 3, and (ii) a segregation structure having low chromium concentration regions surrounded by high chromium concentration regions, the diameters of the defined low chromium concentration regions being within a range of from 80 to 500 .ANG.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: October 4, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Yukihiro Miyamoto, Fumiaki Yokoyama
  • Patent number: 5348446
    Abstract: An airfoil for a gas turbine engine is constructed from a core body formed of a conventional nickel-based superalloy and leading and trailing edge components and squealer tip formed of a nickel aluminide alloy. The nickel aluminide components exhibit a high degree of thermal conductivity and efficiently transfer heat into the core body by direct conduction.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: September 20, 1994
    Assignee: General Electric Company
    Inventors: Ching-Pang Lee, Anne M. Isburgh, Paul S. Wilson
  • Patent number: 5316864
    Abstract: A sputtered magnetic recording disk is formed by a series of sequential sputtering processes within an environment of a low pressure inert gas. A disk substrate is abraded to provide a circumferential texturing of hills and valleys. The height of the hills and valleys are of a dimension not to interfere with a fly characteristic of a recording head, while the arithmetic average of the radial roughness is still sufficient to provide a magnetic switching field distribution of less than 0.20. A chromium nucleating layer is deposited on the textured substrate surface by a first sputtering process. A second sputtering process provide a magnetic layer of a cobalt alloy to provide C-axis orientation parallel to the substrate. A third sputtering process provides a protective carbon film. The output of any signal recorded on the magnetic thin film layer will have an amplitude modulation of less than twenty-five percent (25%).
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: May 31, 1994
    Inventor: Virgle L. Hedgcoth
  • Patent number: 5302434
    Abstract: A magnetic recording disk based on conventional disk technology has both an extremely smooth top surface and high coercivity, and is incorporated in a contact recording disk file which requires an extremely smooth head-disk interface and a disk with high coercivity. A superfinished untextured NiP coating on a disk substrate is oxidized to form a NiO film. The NiO film permits the subsequently sputter deposited magnetic layer to have much higher coercivity, which enables the disk to be used in contact recording applications. The NiO film and the later deposited layers making up the disk, including the top protective overcoat, conform to the smooth surface of the polished NiP, thus preserving the extremely smooth surface of the top layer of the disk, which is required for the head-disk interface in contact recording disk files. In the preferred process for forming the NiO film on the substrate, the substrate is annealed in air at a temperature below that which would cause the NiP film to crystallize.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 12, 1994
    Assignee: International Business Machines Corporation
    Inventors: Mary F. Doerner, Dan S. Parker, Anthony W. Wu, Tadashi Yogi
  • Patent number: 5292592
    Abstract: In an optical information recording medium comprising a substrate (11) of polycarbonate, a recording layer, and a reflecting layer (14) covering the reflecting layer and containing Al, an alloy layer (17) of a Ni-Cr alloy is deposited on the reflecting layer to sufficiently protect transmission of moisture into the reflecting layer. A covering layer (18) of ultraviolet curable resin may be deposited on the alloy layer. The recording layer is formed on the substrate and includes a magneto-optical layer (13) sandwiched between first and second interference layers (15, 16). For protecting transmission of moisture into the substrate, it is preferable that an additional layer (21) of SiO.sub.2 is deposited on the substrate opposite to the recording layer.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: March 8, 1994
    Assignee: NEC Corporation
    Inventor: Masaki Itoh
  • Patent number: 5292594
    Abstract: The present invention is designed to improve a method of deposition of coatings upon a metal or alloy substrate. The coating comprises aluminum or aluminide material interdiffused with a transition metal deposited by chemical vapor deposition which utilizes organometallic precursors to facilitate the deposition of the transition metal. The improvement permits better control of the process and permits coating of complex substrates including those with internal passages or holes. In the embodiment involving a first deposition of aluminum or aluminide coating, applicants have achieved deposition thereon of the transition metal. Platinum is the preferred transition metal to be used in the subject method. A product is taught. This product can be a component from a gas turbine engine.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: March 8, 1994
    Assignee: Liburdi Engineering, Ltd.
    Inventors: Joseph Liburdi, Paul Lowden, Alina Aguero
  • Patent number: 5270123
    Abstract: A nickel base superalloy capable of being made into a single crystal article is provided with high temperature strength and improved stability by limiting the Presence of an undesirable SRZ constituent. Significant to the control of formation of such undesirable constituents is the control of the amount of Re in the alloy in combination with elements such as Al, Cr, Ta, Mo, Co and W. A solution heat treatment is provided for additional control.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: December 14, 1993
    Assignee: General Electric Company
    Inventors: William S. Walston, Earl W. Ross, Kevin S. O'Hara, Tresa M. Pollock
  • Patent number: 5266416
    Abstract: An aluminum-stabilized superconducting wire includes a superconducting wire member obtained by burying a superconducting filament in a copper matrix and an aluminum stabilizing member covered in an outer surface of the superconducting wire member, and the aluminum stabilizing member is constituted by an aluminum alloy having a 0.2 % proof resistivity of 4 kg/mm.sup.2 or more at a very low temperature and a residual resistance ratio of 250 or more. It is preferable that the aluminum alloy contains at least one element selected from 50 to 1,000 ppm of Zn, 50 to 150 ppm of Si, 50 to 400 ppm of Ag, 50 to 300 ppm of Cu, and 30 to 2,000 ppm of Ce, and that a balance is constituted by Al and an inevitable impurity.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: November 30, 1993
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Itaru Inoue, Yoshinori Nagasu, Keizo Kosugi, Takuya Suzuki
  • Patent number: 5254413
    Abstract: An aluminide coating is applied to a portion of the surface of an article that already has a thermal barrier coating system in place over another portion of its surface. The portion of the surface to be coated is contacted, at elevated temperature, with an aluminide coating source material that is a mixture of from about 18 to about 45 weight percent of a metallic source of aluminum and the balance ceramic particles. The metallic source of aluminum may be pure aluminum or an aluminum-containing alloy. No halide activator is present in the aluminide coating source material.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: October 19, 1993
    Assignee: General Electric Company
    Inventor: Antonio F. Maricocchi
  • Patent number: 5236788
    Abstract: A structural component made of an iron-base alloy is provided with a corrosion inhibiting coating which has three layers, namely a primary coating or layer, an intermediate layer, and a top coating or layer. A fourth sealing coat is optional. The primary coating is a nickel or cobalt coating. The intermediate layer comprises intermetallic compounds of nickel aluminide or cobalt aluminide. The top coating is an aluminum base or aluminum alloy base high-temperature lacquer including a binder. Such a combination coating is especially resistant to fretting, oxidation and etch corrosion. The component is suitable especially for parts of gas turbine engine housings. The intermediate layer is formed after application of the primary coating and of the top coating, by a heat treatment within a reaction temperature range in which intermetallic nickel aluminum or cobalt aluminum compounds are formed.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: August 17, 1993
    Assignee: MTU Motoren- Und Turbinen-Union Muenchen GmbH
    Inventors: Karl-Heinz Manier, Gerhard Wydra
  • Patent number: 5223349
    Abstract: A copper-clad aluminum composite wire has a core that is made of an Al-Mg alloy and circumferentially clad with copper or a copper alloy. The aluminum alloy is composed of 1.5 to 10.0 percent by weight of Mg, additives such as Cr and Mn, ordinary impurities, and aluminum whose content is such as to form the rest of the alloy composition. The copper or the copper alloy forms 20 to 40% of the cross-sectional area of the copper-clad aluminum composite wire. Such core material is drawn to reduce the cross-sectional area by 20% or more using a die whose half angle .alpha. is from 15 to 30 degrees to obtain an cladding wire; the cladding wire is further drawn to reduce the cross-sectional area by 70% or more using a drawing die whose half angle .alpha. is from 4 to 15 degrees at least once; and the thus drawn wire is subjected to annealing at temperatures from 200.degree. to 400.degree. C. for from one minute to 24 hours.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: June 29, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazunao Kudo, Kazuo Yamazaki
  • Patent number: 5162158
    Abstract: A magnetic thin film recording medium is provided for longitudinal recording of magnetic flux transitions, with the read-back signals enhanced due to a substantial reduction in media noise. The reduced noise level is the result of a unique vacuum deposition process for applying an underlayer to a substrate, prior to deposition of the magnetic thin film. In particular, the underlayer is deposited in a low temperature plasma process under increased pressure of argon or another inert gas and at reduced deposition rates, thus to create voids or interstitial areas which substantially isolate individual grains from their neighboring grains. The subsequently deposited magnetic thin film replicates the crystalline structure and orientation of the chromium underlayer, for relatively isolated grains in the recording layer. This results in lower media noise levels, approaching or equalling those characteristic of particulate media.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: November 10, 1992
    Assignee: Magnetic Peripherals Inc.
    Inventors: Jodie A. Christner, Rajiv Ranjan
  • Patent number: 5114798
    Abstract: A recording medium lubricated with a thin film of a substituted N-acyl sarcosine. The lubricant is dissolved in a volatile organic solvent (preferably hexane) and coated onto the recording medium. A particularly preferred lubricant is N-oleoyl sarcosine.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: May 19, 1992
    Assignee: Aluminum Company of America
    Inventors: Mei-Yuan Tsai, Vincent A. Paola
  • Patent number: 5082747
    Abstract: A magnetic thin film recording disk includes a substrate of a hard electroless plated nickel surface that has been textured to encourage a circular anisotropic orientation of crystal growth during a pass-by sputtering in a continuous production line. A thin film chromium nucleating layer that is substantially free of any oxidation that would affect the recording properties is subsequently deposited, and then a thin film magnetic layer of a cobalt alloy, having a desired circular anisotropic crystal growth, is deposited through the sputtering process. The resulting magnetic thin film recording disk is then coated with a thin film of a carbon protective material.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: January 21, 1992
    Inventor: Virgle L. Hedgcoth
  • Patent number: 5057196
    Abstract: A platinum-silicon powder is electrophoretically deposited on a nickel or cobalt base superalloy substrate. The deposited powder is heated to form a transient liquid phase on the substrate and initiate diffusion of Pt and Si into the substrate. An aluminum-chromium powder is then electrophoretically deposited on the Pt-Si enriched substrate and diffusion heat treated to form a corrosion- and oxidation-resistant Pt-Si enriched diffused aluminide coating on the substrate. The presence of both Pt and Si in the aluminide coating unexpectedly improves coating ductility as compared to a Pt-enriched diffused aluminide coating without Si on the same substrate material.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: October 15, 1991
    Assignee: General Motors Corporation
    Inventors: George E. Creech, Michael J. Barber
  • Patent number: 5041341
    Abstract: In accordance with the present invention, there are provided information recording media having a substrate and thereon a recording layer and a metallic layer, wherein the metallic layer is composed of an aluminum alloy containing (i) titanium and (ii) at least one metal selected from among chromium, niobium and magnesium. The information recording media thus provided are excellent in corrosion resistance and small in dependence of the recording power on linear velocity.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: August 20, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kiyotaka Shindo, Koichi Igarashi, Kunihiko Mizumoto, Hidehiko Hashimoto
  • Patent number: 5028493
    Abstract: A porous metal supporting a composite portion of an aluminum alloy is formed by means of pressing a pair of surfaces thereof, and then chromium is cemented by diffusion before the molten aluminum alloy is penetrated thereinto. Thus, not only the mechanical strength of the interface between the aluminum alloy and the porous metal, but also the wear resistance of the composite portion can be improved.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: July 2, 1991
    Assignee: Izumi Industries, Ltd.
    Inventors: Yoshihiro Suzuki, Toshio Ogiwara, Masaaki Kudo
  • Patent number: 4933239
    Abstract: A protective coating system for superalloys is described. The coating is an active element enriched aluminide, and can be formed by aluminizing an overlay coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the overlay coating and into the substrate. The coating system exhibits desirable oxidation resistance and resistance to thermal fatigue cracking, due to the presence of oxygen active elements in the overlay.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: June 12, 1990
    Assignee: United Technologies Corporation
    Inventors: Walter E. Olson, Dinesh K. Gupta
  • Patent number: 4929499
    Abstract: An Ni-P (Nickel-Phophorous) undercoating is provided under particulate (spin-coated) magnetic media. Particulate media, largely due to the way it is applied to the disk, is less expensive than thin film media. Described are the systems and methods to utilize the undercoat for particulate media.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: May 29, 1990
    Assignee: Magnetic Peripherals Inc.
    Inventors: Bahram Shadzi, Christopher A. Weaver
  • Patent number: 4927715
    Abstract: Herein disclosed are an overlay alloy used for surface layer of a sliding material and consisting, by weight, of Cu within the range of 0.1 to 6%, In within the range of 1 to 10% and the balance Pb and incidental impurities, and a composite sliding material comprising an surface layer consisting of said overlay alloy. The overlay alloy can further include Sn not more than 8%.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: May 22, 1990
    Assignee: 501 Daido Metal Company Ltd.
    Inventor: Sanae Mori
  • Patent number: 4916026
    Abstract: Sliding layers overlays produced by cathode sputtering comprise a matrix-forming metallic material and at least one other material which is substantially insoluble in the matrix have greatly improved mechanical and corrosion resistance properties, if the insoluble material has a lower melting point than the matrix material, and if the diameters of the particles of the insoluble material are statistically normally distributed with mean x<0.8 .mu.m. Such overlays are produced with the temperature of the substrate maintained below 150.degree. C. during the sputtering process. Coating rates of >0.2 .mu.m [of layer thickness] per minute may be used informing such overlays.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: April 10, 1990
    Assignee: Balzers Aktiengesellschaft
    Inventors: Erich Bergmann, Harald Pfestorf, Jurgen Braus
  • Patent number: 4906532
    Abstract: Disclosed are processes and articles for the preparation of composite electroless coatings which comprise a metal and/or metal alloy, plus particulate matter, the latter having at least two distinct nominal sizes.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: March 6, 1990
    Assignee: Surface Technology, Inc.
    Inventor: Robert A. Spencer, Jr.
  • Patent number: 4891274
    Abstract: A hot-dip aluminium coated steel sheet having excellent corrosion resistance and heat resistance, comprising a steel substrate containing 3 to 18% chromium, not more than 0.02% carbon, 0.1 to 1.5% manganese, 0.005 to 0.08% aluminium, not more than 0.1% silicon, with the balance being iron and unavoidable impurities, and aluminium coating on said sheet substrate. The coated sheet may further comprises a coating layer of nickel or nickel-iron alloy (Ni: 1 to 99%) beneath the aluminium coating, or an Al-Fe-Si-Ni-Cr alloy coating layer of 1 to 10.mu. in thickness and containing 0.05 to 5% nickel, 0.2 to 10% chromium, beneath the aluminium coating.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: January 2, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Seijun Higuchi, Kenichi Asakawa, Takayuki Ohmori, Koji Umeno, Nobuyoshi Okada, Minoru Fujinaga, Fumio Yamamoto, Katsuhiko Yabe
  • 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: 4882236
    Abstract: The present invention discloses a rigid magnetic recording disk and a method of making the same. The substrate is formed by metallurgically bonding at least a first and second layer of clad materials. The hardness and mechanical strength of the first layer is substantially greater than the second layer. The first layer has a thickness which is from about 0.2% to about 20% the thickness of the second layer. The unbonded surface of the first layer is substantially flat and asperity free. The second layer is less dense than the first layer. A magnetic layer is deposited on the unbonded surface of the first layer.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: November 21, 1989
    Assignee: Olin Corporation
    Inventors: Charles W. Smith, Sheldon H. Butt, Eugene Shapiro
  • Patent number: 4877696
    Abstract: A composite sliding structure has a surface layer, a bond layer bonded to the surface layer, an intermediate layer bonded to the bond layer and a backing layer bonded to the intermediate layer. The surface layer is an alloy consisting essentially of 0.1-6.0% Cu and the balance Pb, an alloy consisting essentially of 0.1-6.0% Cu, 0.5-16.0% In and the balance Pb, an alloy consisting essentially of 0.5-16% In and the balance Pb, or any one of these alloys also containing 4% or less Sn. The bond layer is Cu, an alloy consisting essentially of 0.5-20.0% Zn and the balance Cu, an alloy consisting essentially of 0.1-4.0% Sn and the balance Cu, Ni, an alloy consisting essentially of 0.5-20.0% Zn and the balance Ni, or an alloy consisting essentially of 0.1-4% Sn and the balance Ni. The intermediate layer is Al, an alloy consisting essentially of 1.0-13.0% Si, 1.5-6.0% Zn and the balance Al, an alloy consisting essentially of 1.5-13.0% Si and the balance Al, an alloy consisting essentially of 0.1-4.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: October 31, 1989
    Assignee: Daido Metal Company
    Inventor: Takashi Muto
  • Patent number: 4869972
    Abstract: Disclosed is a fuse material consisting of aluminum or a rollable aluminum alloy having a copper plating deposited thereon and optionally being provided with a tin plating deposited on the copper plating. A fuse made of the fuse material shows a small temperature rise and has an extended useful service life as compared to conventional fuses.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: September 26, 1989
    Assignee: Yazaki Corporation
    Inventor: Yuuji Hatagishi
  • Patent number: 4853296
    Abstract: There is proposed an electrode plate for a color display device such as a liquid crystal display device, which comprises a transparent substrate, a color filter disposed on the substrate, a transparent electrode formed on the color filter, and a metal conductor containing nickel and formed on the transparent electrode. The metal conductor may be a multi-layer structure wherein one of the layers is a nickel of a nickel alloy layer.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: August 1, 1989
    Assignee: Toppan Printing Co., Ltd.
    Inventor: Kenzo Fukuyoshi
  • Patent number: 4830932
    Abstract: Light alloy articles comprising a body of light alloy having a composite layer of heat-resistant fibers and light alloy and bonded to said body, and a surface layer of heat-resisting alloy sprayed onto said composite layer exhibit improved integrity and heat resistance when the heat-resisting alloy is plasma sprayed onto one surface of a preform of fibers and the light alloy is then cast to the opposite surface of the preform such that an interfacial layer is defined between the composite layer and the surface layer in which the fibers and light alloy are integrally incorporated with the heat-resisting alloy.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: May 16, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tadashi Donomoto, Atsuo Tanaka, Yoshiaki Tatematsu
  • Patent number: 4824482
    Abstract: Diffusion aluminizing, when applied to titanium is effected with little or no activator to produce more uniform case and less etching.Workpieces are very rapidly pack-diffusion coated by using an excess of energizers in the pack, heating the retort containing the packed workpieces at a rate that brings the workpieces to diffusion-coating temperature and then completing the diffusion coating, all in less than 50 minutes, then cooling the retort.Diffusion aluminizing can also be applied to foils and powder to make pyrophoric product after leaching out much of the introduced aluminum. Powder can also be diffusion boronized. Pyrophoric boron-containing iron or nickel powder mixed with Ba(NO.sub.3).sub.2 will ignite to cause generation of large quantity of NO.sub.2 gas, and generation is improved when powdered boron and/or an oxidizer like NaClO.sub.3 is added.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: April 25, 1989
    Assignee: Alloy Surfaces Company, Inc.
    Inventor: Alfonso L. Baldi
  • Patent number: 4810591
    Abstract: In construction of a composite type metal gasket having a hard metal substrate, use of Cu, Cu-base alloy, Al or Al-base alloys for covering layers well enhances sealing effect and consolidates substrate-covering bonding.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: March 7, 1989
    Assignees: Hamamatsu Gasket Seisakusho Limited, Nippon Gakki Seizo Kabushiki Kaisha
    Inventor: Yakichi Sakai
  • Patent number: 4794047
    Abstract: The method of manufacturing a magnetic recording medium according to the present invention comprises a first step in which a ferromagnetic metal layer of a predetermined thickness is formed on a substrate, and a second step contiguous to said first step and in which another ferromagnetic metal layer is formed by applying a bias voltage to the substrate. Since the ferromagnetic metal layer formed at the second step is excellent in corrosion resistance, even if a protective layer such as a carbon layer incurs a pit defect when the medium is being produced or even when the protective layer is separated, the ferromagnetic metal layer in consideration will not be corroded, thus preventing any error from occurring in data recording or reproduction.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: December 27, 1988
    Assignee: Hitachi, Ltd.
    Inventor: Susumu Funamoto
  • Patent number: 4755438
    Abstract: An aluminum film deposited copper material capable of being effectively used as a wiring and a heat sink for various electronic elements, an electrical wire, a cable, and the like while preventing diffusion and penetration of copper atoms into a different element. The copper element includes an aluminum film formed on a copper base according to an ion beam deposition techniques. Thus, the aluminum film may be deposited on the copper base with adhesion and denseness sufficient to block diffusion or exudation of copper atoms into the deposited aluminum film. Also, the aluminum film may be deposited in a thickness sufficient to ensure physical and electrical characteristics of copper.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: July 5, 1988
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Kiyoshi Morimoto, Toshinori Takagi
  • Patent number: 4753852
    Abstract: A magnetic recording medium for high density recording comprising a non-magnetic substrate, a Cr undercoat and a magnetic Ni-Cr-Co alloy thin layer formed on the substrate. The magnetic alloy thin layer has a thickness of from 400 to 1200 angstrom and a Cr content of from 3 to 17 atomic percent. As a result, improved magnetic characteristics and corrosion resistance of the medium are ensured.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: June 28, 1988
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Makoto Mizukami, Toshio Kato, Toshikazu Nishihara, Toshiro Abe, Akihiro Kimura
  • Patent number: 4745036
    Abstract: In the manufacture of semiconductor device packages, a jumper chip, comprising a substrate and a gold alloy attached thereto, with improved bonding characteristics is provided. By applying a coating of gold on both sides of the gold alloy prior to attaching the gold alloy to the substrate, the bonding of the gold alloy to the substrate and to the gold coating of the cavity in a device package is improved. Scrubbing of the jumper chip on the gold coating of the cavity is obviated. The additional gold layers applied to the gold alloy are distinct and visible on a photograph of a cross-section of the jumper chip.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: May 17, 1988
    Assignee: Cominco Ltd.
    Inventors: Robert L. Trevison, William E. McKee, Larry B. Hunnel
  • Patent number: 4710433
    Abstract: Methods are disclosed for the manufacture of optical conductive transparent windows and coatings having high transparency over a wide bandwidth combined with a large acceptance angle of incidence. Particulars for making windows and coatings with gold films of high transparency and low sheet resistance using specified nucleating and barrier layers are given. Examples include windows and coatings constructed for operation in the infrared and ultraviolet.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: December 1, 1987
    Assignee: Northrop Corporation
    Inventors: James M. Rowe, Rudolph W. Modster
  • Patent number: 4696867
    Abstract: An alloy for use as a bearing lining on a metal backing comprising, by weight, 1 to 11% silicon, 8 to 35% tin, and 0.2 to 3% copper, the balance being aluminum. The lining is first cast as a billet annealed, cold rolled, annealed and cold rolled a second time and then bonded to the metal backing. The lining optionally carries a soft overlay.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: September 29, 1987
    Assignee: AEPLC
    Inventor: Barry J. Eastwood
  • Patent number: 4686151
    Abstract: An enhanced substrate for magnetic data storage devices incorporating a metallic thin film magnetic recording medium attached to the substrate by wet plating processes. In one embodiment the substrate is composed of a single phase alloy. The substrate can then be processed by conventional magnetic data storage device fabrication procedures with the resultant storage device having fewer surface coating irregularities and magnetic characteristic inconsistencies than conventional magnetic data storage devices. In an alternative embodiment a layer of a single phase alloy is first deposited onto a conventional substrate. The single phase alloy may be incorporated in both rigid storage devices where a magnetic data read-write head floats above the surface of the storage device or flexible magnetic storage devices in which the read-write head is in intimate contact with the storage device.
    Type: Grant
    Filed: April 9, 1985
    Date of Patent: August 11, 1987
    Assignee: Dynamic Disk
    Inventor: Daniel X. Wray
  • Patent number: 4678716
    Abstract: Aluminum silicon alloys are used as cores for highly conductive metal coated particles to be incorporated in resins for use as electromagnetic interference shielding. High temperature processing conditions are used after coating of the particles to improve internal and external corrosion resistance of gaskets and filled resins into which the particles are incorporated for shielding use.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: July 7, 1987
    Assignee: Chomerics, Inc.
    Inventor: Wen-Shian V. Tzeng
  • Patent number: 4677032
    Abstract: A thin film metal alloy medium for vertical recording has a magnetic film structure of individual films, each film being made up of a non-magnetic layer and a magnetic layer. In a preferred embodiment of the medium, each of the layers is a cobalt-chromium-tantalum (CoCrTa) alloy, the tantalum concentration being varied in the different layers in order to provide either the non-magnetic or the magnetic properties to the layers. The medium also includes a soft magnetic underlayer film structure between the substrate and the magnetic film structure to provide a magnetic flux return path. Each film in the underlayer film structure comprises a CoCrTa non-magnetic layer and a CoCrTa magnetic layer, each magnetic layer being sufficiently thin such that the underlayer film structure exhibits in-plane magnetization with no perpendicular magnetic anisotropy.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: June 30, 1987
    Assignee: International Business Machines Corporation
    Inventor: Clifford J. Robinson
  • Patent number: 4675239
    Abstract: A perpendicular magnetization amorphous thin film of an alloy of samarium, cobalt and bismuth having an easy magnetizing axis perpendicular to a plane of substrate, and the preparation thereof. According to the thin film, a large saturation magnetization is obtained along an easy magnetizing direction perpendicular to the plane of substrate. The thin film can be prepared by depositing samarium, cobalt and bismuth on the substrate without any applying a bias voltage to the substrate.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: June 23, 1987
    Assignees: Yoshifumi Sakurai, Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshifumi Sakurai, Koji Saiki