Silicon Containing Coating Patents (Class 427/452)
  • Patent number: 6329021
    Abstract: A material wire for producing wear-resistant and tribologically favorable surface coatings from a supereutectic Al/Si alloy by thermal spraying. The material wire is a filling wire that has a sheath made of metallic aluminum and a filling made of one or more additional alloy components.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: December 11, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Tilmann Haug, Patrick Izquierdo, Wolfgang Reichle
  • Patent number: 6326319
    Abstract: There is provided a method for applying a lower viscosity coating liquid onto a semiconductor wafer substrate so as to prevent adhesion loss and to maintain low defect level characteristics. This is achieved by priming the substrate with a bonding agent at a temperature in the range of 18° C. to 50° C. for a short amount of time. This is performed prior to the application of a liquid solvent. As a result, there is overcome the problems of poor adhesion to the substrates and high defect levels in the coated UTR films.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: December 4, 2001
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Christopher L. Pike, Khanh B. Nguyen, Christopher F. Lyons
  • Patent number: 6322857
    Abstract: A material in powder or wire form on a nickel basis for the production of a coating with a high level of resistance to corrosion and wear by means of a thermal coating process is of the following composition (in percent by weight): C 0.005-1.0;  Cr 10.0-26.0; Mo  8.0-20.0; Fe  0.1-10.0; Si 3.0-7.0; B 1.0-4.0; Cu 0.1-5.0; Ni Balance. The material in powder form can be alloyed and sprayed out of the melt or agglomerated out of different alloyed and non-alloyed metal powders. The coating material can also be used in the form of a filling wire or an alloyed and cast bar material.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: November 27, 2001
    Assignee: Castolin, S.A.
    Inventors: Ingo Kretschmer, Peter Heimgartnér, Gary Robert Heath
  • Patent number: 6312763
    Abstract: A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a yttrium silicate.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: November 6, 2001
    Assignees: United Technologies Corporation, General Electric Co., NASA
    Inventors: Harry Edwin Eaton, Jr., William Patrick Allen, Nathan S. Jacobson, Kang N. Lee, Elizabeth J. Opila, James L. Smialek, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra
  • Patent number: 6308408
    Abstract: An integral, lightweight combustion chamber/nozzle assembly for a rocket engine has a refractory metal shell defining a chamber of generally frusto-conical contour. The shell communicates at its smaller end with a rocket body, and terminates at its larger end in a generally contact contour, which is open at its terminus and which serves as a nozzle for the rocket engine. The entire inner surface of the refractory metal shell has a thermal and oxidation barrier layer applied thereto. An ablative silica phenolic insert is bonded to the exposed surface of the thermal and oxidation barrier layer. The ablative phenolic insert provides a chosen inner contour for the combustion chamber and has a taper toward the open terminus of the nozzle. A process for fabricating the integral, lightweight combustion chamber/nozzle assembly is simple and efficient, and results in economy in respect of both resources and time.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: October 30, 2001
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: W. Neill Myers, Charles S. Cornelius
  • Patent number: 6296909
    Abstract: A process for depositing a mullite coating on a silicon-based material, such as those used to form articles exposed to high temperatures and including the hostile thermal environment of a gas turbine engine. The process is generally to thermally spray a mullite powder to form a mullite layer on a substrate, in which the thermal spraying process is performed so that the mullite powder absorbs a sufficient low level of energy from the thermal source to prevent evaporation of silica from the mullite powder. Processing includes deposition parameter adjustments or annealing to maintain or reestablish phase equilibrium in the mullite layer, so that through-thickness cracks in the mullite layer are avoided.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: October 2, 2001
    Assignee: General Electric Company
    Inventors: Irene T. Spitsberg, Hongyu Wang, Raymond W. Heidorn
  • Patent number: 6284325
    Abstract: A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a calcium alumino silicate.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: September 4, 2001
    Assignees: General Electric Company, United Technologies Corporation, The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventors: Harry Edwin Eaton, Jr., William Patrick Allen, Robert Alden Miller, Nathan S. Jacobson, James L. Smialek, Elizabeth J. Opila, Kang N. Lee, Bangalore A. Nagaraj, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra
  • Patent number: 6284324
    Abstract: A method for protecting a synthesis gas generator burner heat shield includes coating the burner heat shield with an overlay alloy coating composition of the formula MCrAlY wherein M is selected from the group consisting of iron, nickel, and cobalt. In a preferred embodiment, the coating includes from about 20-40 weight % Co, 5-35 weight % Cr, 5-10 weight % Ta, 0.8-10 weight % Al, 0.5-0.8 Y, 1-5 weight % Si and 5-15 weight % Al2O3.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: September 4, 2001
    Assignee: Eastman Chemical Company
    Inventor: Gary Scott Whittaker
  • Patent number: 6277448
    Abstract: This invention relates to methods whereby nanoparticle precursor solutions are used in conventional thermal spray deposition for the fabrication of high-quality nanostructured coatings. The method allows combining nanoparticle synthesis, melting, and quenching into a single operation.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: August 21, 2001
    Assignees: Rutgers the State University of New Jersey, University of Connecticut
    Inventors: Peter R. Strutt, Bernard H. Kear, Ross F. Boland
  • Patent number: 6269663
    Abstract: The deposit of natural or synthetic silica comprises a preform (1) set into rotation (7) in front of a plasma torch (3) which moves back and forth substantially parallel to a longitudinal direction (L) of the preform (1), a feed duct (9) for feeding the plasma with grains of natural or synthetic silica (11), characterized in that the same feed duct (9) feeds the plasma with a fluorine or chlorine compound, preferably a fluorine compound, mixed with a carrier gas (15). Sodium or lithium contained in the grains of natural or synthetic silica reacts with the fluorine or chlorine of the fluorine or chlorine compound, making it possible to improve the optical quality of fibers built up with the natural or synthetic silica at reduced cost.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: August 7, 2001
    Assignee: Alcatel
    Inventors: Alain Drouart, Benoit Gouez, Yves Lumineau, Pierre Ripoche, Jean-Florent Campion
  • Patent number: 6258417
    Abstract: A method of producing a nanocomposite coating without gaseous precursor reactants. A non-nanocrystalline particulate containing a polymorphic material in an atmospheric phase is introduced into a high-velocity gas jet. The projected particulate is allowed to impact a substrate at a velocity effective to cause at a least a portion of the polymorphic material to transform to a nanocrystalline, high pressure phase.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: July 10, 2001
    Assignee: Research Foundation of State University of New York
    Inventors: Ramasis Goswami, Sanjay Sampath, John Parise, Herbert Herman
  • Patent number: 6254938
    Abstract: A method for applying a porous coating incorporating a tricomponent powder mixture deposited on a hard substrate (i.e. metallic or ceramic) by plasma spraying. The coating has high adhesion strength to the substrate, with outstanding thermo-mechanical characteristics and with good resistane to thermal or mechanical action. The mixure includes aluminum oxide and/or titanium oxide powder and glass powder as the coating's microstructure forming materials; aluminum and/or titanium power metal binder and aluminum hyroxide and/or titanium hydroxide powder as a material assuring the formation of coating's microstructure. Plasma spraying includes passing the powder through the plasma beam, simultaneously melting of the metal oxide, partially alloying components into separate plasma beam zones—the hydroxide to the colder zone, and the metal to the hotter zone. The aluminum particles reach the substrate first and develop the adhesion of the sprayed layer to the substrate.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: July 3, 2001
    Assignee: LTU, LLC
    Inventors: Liudvikas Pranevicius, Rimantas Pakamanis
  • Patent number: 6254935
    Abstract: A method for applying a barrier layer which comprises a barium-strontium aluminosilicate to a silicon containing substrate which inhibits the formation of cracks.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: July 3, 2001
    Assignee: United Technologies Corporation
    Inventors: Harry E. Eaton, Thomas H. Lawton
  • Patent number: 6238843
    Abstract: A method of preparing a planographic printing member is disclosed. In one embodiment, the method comprises forming a hydrophilic layer by thermally spraying a hydrophilic particulate material onto an ablatable layer. Typical hydrophilic materials are SiO2, Al2O3, Cr2O3, TiO2 and ZrO2. Spraying a plasma containing the hydrophilic material in an inert gas atmosphere is preferred method for forming the hydrophilic layer.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: May 29, 2001
    Assignee: Kodak Polychrome Graphics, LLC
    Inventors: Kevin Barry Ray, Christopher David McCullough
  • Publication number: 20010001366
    Abstract: Natural or synthetic silica is deposited on a preform set into rotation in front of a plasma torch which moves back and forth substantially parallel to a longitudinal direction of the preform, a first feed duct feeds the plasma with grains of natural or synthetic silica while a second feed duct feeds the plasma with a fluorine or chlorine compound, preferably a fluorine compound, mixed with a carrier gas Any sodium or lithium contained in the grains of natural or synthetic silica react with the fluorine or chlorine of the fluorine or chlorine compound, thereby making it possible to improve the optical quality of fibers drawn from a preform built up with natural or synthetic silica, and to do so at reduced cost.
    Type: Application
    Filed: March 5, 1998
    Publication date: May 24, 2001
    Inventors: ALAIN DROUART, BENOIT GOUEZ, YVES LUMINEAU, PIERRE RIPOCHE, JEAN-FLORENT CAMPION
  • Patent number: 6159553
    Abstract: A coating of whisker shaped beta silicon nitride grains are formed upon a silicon nitride substrate by sintering over a period of several hours, and the resulting product has a porous reaction bond coating strongly adhered to the silicon nitride substrate.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: December 12, 2000
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Chien-Wei Li, Thomas Edward Strangman
  • Patent number: 6131533
    Abstract: A hard carbon film is formed over an inner surface of a guide bush by fixing an auxiliary electrode support member for supporting an auxiliary electrode of a jig for forming a film in a center bore of the guide bush by an auxiliary electrode insulation member, disposing an auxiliary electrode in alignment with the axis of the center bore so as to face the inner surface, disposing legs, and a first electrode plate, a second electrode plate, and the insulation member which are fixed to the legs are placed on the bottom of a vacuum vessel placing the guide bush on the first electrode plate contacted electrically with a power source, while the projection of the auxiliary electrode support member projecting out of the auxiliary electrode insulation member is contacted electrically with the second electrode plate.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: October 17, 2000
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Osamu Sugiyama, Yukio Miya, Ryota Koike, Takashi Toida, Toshiichi Sekine
  • Patent number: 6129954
    Abstract: A process for depositing a mullite coating on a silicon-based material, such as those used to form articles exposed to high temperatures and including the hostile thermal environment of a gas turbine engine. The process is generally to thermally spray a mullite powder to form a mullite layer on a substrate, in which the thermal spraying process is performed so that the mullite powder absorbs a sufficient low level of energy from the thermal source to prevent evaporation of silica from the mullite powder. Processing includes deposition parameter adjustments or annealing to maintain or reestablish phase equilibrium in the mullite layer, so that through-thickness cracks in the mullite layer are avoided.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 10, 2000
    Assignee: General Electric Company
    Inventors: Irene T. Spitsberg, Hongyu Wang, Raymond W. Heidorn
  • Patent number: 6123999
    Abstract: A method for preparing a scratch and abrasion resistant surface on unroughened aluminum or stainless steel cookware, for subsequent coating with a nonstick polymer resin, such as a fluoropolymer, in a liquid and/or powder medium. The scratch and abrasion resistant surface consists of a thermally sprayed aluminum or stainless steel, respectively. A metal coated substrate produced by this method and an article subsequently coated with a fluoropolymer surface by this method are also described.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: September 26, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Vinci Martinez Felix, Pidatala Krishna Mohan, William Francis McHale
  • Patent number: 6106903
    Abstract: A mass of molybdenum disilicide-silicon carbide composite material is prepared by providing a mixture of molybdenum disilicide-silicon carbide precomposited powder, and plasma spraying the precomposited powder onto a substrate using argon-shrouded plasma spray deposition, to form a plasma-sprayed mass. The plasma-sprayed mass may be subsequently heat treated.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: August 22, 2000
    Assignee: Plasma Technology, Inc.
    Inventor: Kamleshwar Upadhya
  • Patent number: 6099915
    Abstract: In a method of coating easily oxidisable materials by plasma powder build-up welding of additive materials in powder form using alternating current or direct current with superimposed alternating current to produce a plasma transferred arc for powder build-up welding in accordance with patent application No 196 26 941.5 a CuNi-alloy is used as an additive welding material with additions (in % by weight) of:______________________________________ Fe below about 10; Cr below about 5; B below about 4; Si below about 4; C with about 1.5; ______________________________________with a degree of mixing of more than 40% by volume.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: August 8, 2000
    Assignee: Castolin S.A.
    Inventor: Michael Dvorak
  • Patent number: 6086945
    Abstract: A method of forming a polycrystalline silicon thin layer, which comprises the steps of forming a silicon thin film on a surface of a heat resistant substrate by making use of polycrystalline silicon fine particles as a raw material, and heating the silicon thin film thereby to recrystallize the silicon thin film and hence to enlarge an average particle diameter of the polycrystalline silicon fine particles. The silicon thin film is formed by depositing the polycrystalline silicon fine particles directly on the surface of the substrate, and meets a relationship represented by the following formula (1)W.sub.A /(V.sub.S .multidot.d.sub.S).gtoreq.0.95 (1)wherein W.sub.A is the weight of the polycrystalline silicon fine particles which is actually deposited on the surface of the substrate, V.sub.S is a volume of the silicon thin film which is deposited on the surface of the substrate, and d.sub.S is a density of silicon (Si).
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: July 11, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Kamata, Hiroki Inagaki, Seiichi Suenaga, Hiromitsu Takeda
  • Patent number: 6080360
    Abstract: A coating for a cylinder bore of a reciprocating engine with an iron, aluminum, or magnesium base comprises a hypereutectic aluminum/silicon alloy. The alloy is applied to a cylinder wall by thermal spraying.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: June 27, 2000
    Assignee: DaimlerChrysler AG
    Inventors: Harald Pfeffinger, Micheal Voit, Tilman Haug, Patrick Izquierdo, Herbert Gasthuber, Wolfgang Reichle, Axel Heuberger, Franz Rueckert, Peter Stocker, Helmut Proefrock
  • Patent number: 6024824
    Abstract: The present invention provides a method of making sheet articles, for example, abrasive articles, retroreflective articles (such as traffic signs), pavement marking articles, or traction or non-skid articles. The method includes passing particles through a thermal sprayer to heat the particles and impinging the heated particles into a polymeric sheet so that the particles are at least partially embedded in the polymeric sheet. Preferably, the polymeric sheet is heated before impingement of the heated particles. One preferred method of softening the sheet is by a thermal sprayer that is used to heat the particles. A preferred thermal sprayer is a flame sprayer having a nozzle for emitting a flame, where the nozzle has a cross-web width and a downweb thickness, the width being substantially greater than the thickness.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: February 15, 2000
    Assignee: 3M Innovative Properties Company
    Inventor: John E. Krech
  • Patent number: 6015595
    Abstract: An apparatus for forming a film on a substrate includes a gas inlet and an insert attached to the gas inlet, the insert including a deposition source material such as lithium. To form the film on the substrate, the substrate is mounted in a vacuum chamber. After the vacuum chamber is pumped clown to a subatmospheric pressure, a first process gas such as argon is provided through the gas inlet and insert and into a plasma region proximate the substrate. Power is then coupled to generate a plasma inside of the insert which heats the insert and causes the deposition source material to vaporize. The deposition source material vapor is mixed with a plasma polymerizable material in the plasma region proximate the substrate causing a plasma enhanced chemical vapor deposition (PECVD) thin film such as silicon oxide including the deposition source material (e.g. lithium) to be deposited on the substrate.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: January 18, 2000
    Inventor: John T. Felts
  • Patent number: 6004362
    Abstract: A method for fabricating a tool used in cutting, grinding and machining operations, is provided. The method is used to deposit a mixture comprising an abrasive material and a bonding material on a tool surface. The materials are propelled toward the receiving surface of the tool substrate using a thermal spray process. The thermal spray process melts the bonding material portion of the mixture, but not the abrasive material. Upon impacting the tool surface, the mixture or composition solidifies to form a hard abrasive tool coating.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: December 21, 1999
    Assignees: Lockheed Martin Energy Systems, Lockheed Martin Energy Research Corp.
    Inventors: Roland D. Seals, Rickey L. White, Catherine J. Swindeman, W. Keith Kahl
  • Patent number: 5997957
    Abstract: A process for the deposition of thick coatings with a thickness >1 mm on products made of copper or alloys thereof, wherein said products are subjected to the following operations: surface activation of the product made of copper or alloys thereof; optional heat stabilization to a temperature below the ones causing deterioration of the chemical and physical properties of the copper or alloys thereof; deposition of a first layer, for example of Ni or alloys thereof; optional interdiffusion heat treatment; optional activation of the surface of the first layer; thermal stabilization of said product at a temperature of between 20.degree. and 400.degree. C.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: December 7, 1999
    Assignee: Centro Sviluppo Materiali S.p.A.
    Inventors: Luca Bertamini, Edoardo Severini, Mario Tului
  • Patent number: 5997248
    Abstract: A granular composition is applied to tips of rotor blades utilized in a gas turbine engine wherein the blade tips rub against an abradable ceramic layer. Individual grains each have a core of silicon carbide and a layer of aluminum nitride on the core. A layer of a cladding metal may be bonded to the aluminum nitride. The composition also may include particles of cubic boron nitride and/or particles of metal alloy blended with the grains of silicon carbide.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: December 7, 1999
    Assignee: Sulzer Metco (US) Inc.
    Inventors: Farshad Ghasripoor, Richard K. Schmid, Mitchell R. Dorfman
  • Patent number: 5993915
    Abstract: A method of fusing a thermal spray coating to a base material employs infrared heating. The thermal spray coating is applied to the base material in a conventional manner. The infrared heater applies unidirectional heat in a first time-temperature relation to the coating during a fusing phase to melt individual coating platelets into a dense layer and to metallurgically bond the coating to the base material. In a base material that is heat treatable, the base material can be heat treated subsequent to the fusing phase. Initial heat treating of the base material occurs during the fusing phase. Continued heat treating of the base material is achieved after the thermal spray coating fusing phase by a second application of time-temperature from the infrared heater. A cold wall process can be used to aid in the quenching phase of the heat treating process.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: November 30, 1999
    Assignee: Adaptive Coating Technologies, LLC
    Inventor: John D. Krebsbach
  • Patent number: 5985205
    Abstract: Structural ceramic matrix composite material to be employed as automotive engine parts and the like is provided with erosion-resistant qualities in several ways. For one, an erosion-resistant material is applied to the surface as by plasma spraying. The erosion-resistant material can also be mixed with the fibers of the material, particularly near the surface.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 16, 1999
    Assignee: Northrop Grumman Corporation
    Inventors: Steven Donald Atmur, Thomas Edward Strasser
  • Patent number: 5917652
    Abstract: All-ceramic retroreflective elements which may be used in pavement markings comprising an opacified ceramic core and ceramic optical elements partially embedded into the core.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: June 29, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James P. Mathers, Kathleen M. Humpal, Roger W. Lange
  • Patent number: 5888587
    Abstract: A method of applying a silica having fluorine therein by spraying silica simultaneously with a fluorine-containing gas by a POD method plasma torch.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: March 30, 1999
    Assignee: Alcatel N.V.
    Inventor: Jean-Florent Campion
  • Patent number: 5874134
    Abstract: A method and apparatus for the controlled synthesis and assembly of nanoparticles into nanostructured materials, including nanocomposites, includes a source of nanoparticles and a hypersonic impaction apparatus. The nanoparticles are impacted on a substrate through hypersonic impaction to thereby provide nanostructured materials as well as nanophase materials.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: February 23, 1999
    Assignee: Regents of The University of Minnesota
    Inventors: Nagaraja P. Rao, Steven L. Girshick, Peter H. McMurry, Joachim V. R. Heberlein
  • Patent number: 5869146
    Abstract: Coatings containing at least 85% by volume crystalline mullite with less than 15% by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: February 9, 1999
    Assignee: United Technologies Corporation
    Inventors: Philip H. McCluskey, Harry E. Eaton, Jr., Daniel R. Godin, George E. Foster, H. David Harter, Stephen Chin, Glenn A. Cotnoir, Charles A. Ellis
  • Patent number: 5853816
    Abstract: This invention is relating to a sputter cathode (1) with a layer of material that is applied to a substrate by sputtering, wherein this layer (3) contains low electrical conductivity particles (3a) of which a certain quantity are at least coated by a film (3b) of electrically conductive material, or which form an aggregate with a conductive material, so as to give this layer (3) sufficient electrical conductivity to be able to be applied to the substrate by means of sputtering.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: December 29, 1998
    Assignee: Emiel Vanderstraeten
    Inventor: Johan Vanderstraeten
  • Patent number: 5830540
    Abstract: A method and apparatus for reactive plasma surfacing includes at least two electrodes between which reactive gases are passed. The reactive gases are ionized by the arc between the electrodes, creating a plasma of heated, ionized, reactive gases. The plasma is then applied to a surface to be treated, causing a chemical reaction between the plasma and the surface and resulting in a new diffusional substrate surface on the treated object. The process occurs at substantially atmospheric pressure, and may include an inert gas to shield the process from the surrounding environment.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: November 3, 1998
    Assignee: Eltron Research, Inc.
    Inventor: Jim Bowers
  • Patent number: 5825565
    Abstract: In order to produce lightweight mirror structures or other reflecting components, preformed silicon elements of sufficient wall thickness are applied to a CFC or CMC substrate structure with the dimensions of the component to be produced, at a temperature in the range 1300.degree. C. and 1600.degree. C. either in vacuum or in a protective atmosphere. In this way a mirror structure or reflector is formed directly. It is possible to work at temperatures in the range of 300.degree. C. to 600.degree. C. when the silicon is applied in the form of a preform such as a wafer, which is joined to the substrate by way of a zone of a melt eutectic incorporating a nonferrous metal, which is preferably gold. The surfaces are subsequently coated.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: October 20, 1998
    Assignees: Industrieanlagen-Betriebsgesellschaft GmbH, Daimler-Benz Aerospace AG
    Inventors: Ulrich Papenburg, Ernst Blenninger, Peter Goedtke, Michael Deyerler
  • Patent number: 5783255
    Abstract: A high quality shaped article of silicon carbide is efficiently produced by using a carbon substrate suitable for the production of a silicon carbide film without generating cracking or breakage. In a method of producing a shaped article of silicon carbide while using a carbonaceous material as a deposition substrate by decomposing halogenated organic silicone compound by a reduction pyrolysis at a high temperature, forming a silicon carbide film layer on a surface of the substrate by CVD and removing the carbon substrate, the carbon substrate is formed of a composite of graphite and amorphous carbon obtained by shaping and firing a mixture of a powdery graphite and an organic substance.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: July 21, 1998
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Yoshihisa Suda, Yasushi Yamamoto
  • Patent number: 5776550
    Abstract: The invention relates to an oxidation inhibitor coating for high-melting metals selected from the group of molybdenum, tungsten, tantalum and niobium and/or alloys thereof. The oxidation inhibitor coating comprises 1 to 14% by weight boron, 0.1 to 4% by weight carbon and the balance silicon.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: July 7, 1998
    Assignee: Schwarzkopf Technologies Corporation
    Inventors: Joachim Disam, Hans-Peter Martinz, Manfred Sulik
  • Patent number: 5731041
    Abstract: The invention is to a method for producing a high surface substrate. A mask is positioned (31) over a substrate to define a deposition area. Thereafter at least two dissimilar materials are simultaneously deposited (32) through the mask onto the deposition area. Then one of the deposited materials is selectively removed (33) to provide a high surface area deposited substrate.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: March 24, 1998
    Assignee: Texas Instruments Incorporated
    Inventors: Donald C. Abbott, Mohendra S. Bawa
  • Patent number: 5714243
    Abstract: A dielectric image receiving member is disclosed which comprises a substrate layer, a porous plasma-sprayed dielectric layer formed on the surface of the substrate layer, and a dielectric polymeric coating material filling at least those pores opening at the surface of the oxide layer. Most preferably, the plasma-sprayed layer is a metal oxide and the coating material is a glass resin.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: February 3, 1998
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Donald J. Teney, Dennis A. Abramsohn, Santokh S. Badesha, Donald S. Sypula
  • Patent number: 5700309
    Abstract: A method of repairing an oxide-based refractory body by projecting a powder mixture against a hot surface of the body and in the presence of oxygen to provide a refractory repair mass includes providing a powder mixture composed of particles of at least one refractory oxide; fuel particles which react in an exothermic manner with the oxygen to form a refractory oxide and which are particles composed of at least one element selected from the group consisting of magnesium, aluminum, silicon, and mixtures thereof; and particles of silicon carbide present in an amount which is effective to provide a reduced porosity of the refractory repair mass and which does not exceed 10% by weight based on the weight of the powder mixture; and projecting the powder mixture against a hot surface of the oxide-based refractory body and in the presence of oxygen. Preferably, the powder mixture contains at least 1%, most preferably from 1 to 5%, by weight of the particles of silicon carbide.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: December 23, 1997
    Assignee: Glaverbel
    Inventors: Alexandre Zivkovic, Jean-Pierre Meynckens, Bernard Somerhausen
  • Patent number: 5695825
    Abstract: A hard-facing material source is an article whose net composition is, in weight percent, from about 20 to about 35 percent chromium, from about 2 to about 5 percent boron, from about 1 to about 2.5 percent silicon, from 0 to about 0.5 percent carbon, from about 0.5 to about 2 percent manganese, and from about 0.2 to about 1.0 percent titanium, balance iron and incidental impurities. The article may be a powder or a hollow tube with a powder packed therein. The hard-facing material source is thermally applied to a substrate by spraying or welding.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: December 9, 1997
    Assignee: Amorphous Technologies International
    Inventor: David M. Scruggs
  • Patent number: 5650234
    Abstract: Several poly(ethylene glycol) mixed carbonates and their preparation are closed. These carbonates are synthesized by conversion of polyethylene glycol first to the chloroformate then by reaction with the hydroxyl group of N-hydroxybenzotriazole or 2-hydroxypyrimidine or N-hydroxy-2-pyrrolidinone. These mixed carbonate analogs smoothly react with amino groups in aminoglycans and protein and amino containing surfaces to form stable, hydrolysis resistant carbamate linkages.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: July 22, 1997
    Assignee: Surface Engineering Technologies, Division of InnerDyne, Inc.
    Inventors: Eric Kurt Dolence, Chen-Ze Hu, Ray Tsang, Clifton G. Sanders, Shigemasa Osaki
  • Patent number: 5635002
    Abstract: Disclosed is a structure composed of a ragged base body with a ragged surface and a non-adhesive layer of a non-adhesive high polymer, in which the layer is fixed to at least the depressions of the ragged surface in such a way that the ragged profile of the body appears on the outer surface, reiterated by the layer. The ragged profile has a mean surface roughness Ra of 0.5 to 20 .mu.m and the mean distance Z between the adjacent projections forming the ragged profile is 20 to 1000 .mu.m. The non-adhesive high polymer may be a silicone high polymer having a silicone oil content of 10% or less. It has an effective surface tension of 32 dyn/cm or less. As the structure has improved releasing characteristics, adhesion of an adhesive substance to the structure may be effectively prevented without using any conventional releasing agent.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 3, 1997
    Assignee: Tokyo Silicone Co., Ltd.
    Inventors: Isamu Oikawa, Katsuhiko Maeda
  • Patent number: 5597644
    Abstract: A ceramic circuit board comprises a ceramic substrate having a glaze film formed thereon, the glaze film being overlaid with a functional thin film such as a ferromagnetic film serving as a magnetic sensor, for example. The ceramic substrate is made of a low-firing ceramic material such as a glass ceramic material which can be sintered at a temperature below 1000.degree. C. by co-firing with the glaze film. Preferably, the ceramic substrate has a recess on its top surface, and the glaze film is embedded in the recess such that the difference in level between the ceramic substrate and the glaze film is 20 .mu.m or less.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Sumitomo Metal Ceramics, Inc.
    Inventors: Hideaki Araki, Junzo Fukuta, Masashi Fukaya
  • Patent number: 5576068
    Abstract: The present invention relates to a method of treating a packaging element, specially a sealing element, comprising the coating with a polymer film of at least those parts of said element which are liable to be in contact with the products packaged, wherein said coating is produced by polymerization, assisted by cold-far-remote-plasma, of at least one monomer chosen from siloxanes and silazanes of formula: ##STR1## in which: A represents an oxygen atom or the NH group and;R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 represent, independently, a hydrogen atom or an alkyl or alkoxy group having from 1 to 4 carbon atoms, preferably a methyl group. Application: stoppers intended for a medical or pharmaceutical use.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: November 19, 1996
    Assignee: Societe De Transformation Des Elastomers A Usages Medicaux Et Industriels
    Inventors: Laurent Caburet, Kamyar Asfardjani, Odile Dessaux, Pierre Goudmand, Charaffedine Jama
  • Patent number: 5569496
    Abstract: A layer of material is thermally sprayed onto a portion of the surface of a vehicle wheel rim drop well with an arc plasma spray gun. Before spraying, the drop well surface is prepared by removing any dirt, oil and oxides. The sprayed layer has a greater density than the metal forming the wheel rim and reduces the porosity of the drop well.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: October 29, 1996
    Assignee: Hayes Wheels International, Inc.
    Inventors: Daniel C. Wei, Romulo A. Prieto
  • Patent number: 5567490
    Abstract: The present invention resides in a white thermal control surface resistant to darkening due to exposure to X-rays and ultraviolet radiation. The surface comprises a substrate and a ceramic zirconium orthosilicate coating on said substrate. The zirconium orthosilicate coating is obtained by plasma-spray applying particles of zirconium orthosilicate onto the substrate. The particles of zirconium orthosilicate are doped with an oxide of a +3 valent metal. The metal ions of said +3 valent metal oxide are dispersed substantially uniformly throughout said particles.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 22, 1996
    Assignee: Martin Marietta Corporation
    Inventors: Harold A. Papazian, Donald F. Shepard, Edward A. Pierson, Michael J. Gordon
  • Patent number: 5543170
    Abstract: System and method for controlling alloy composition during molecular beam epitaxy growth of group III-V ternaries at high substrate temperature or under any conditions which give rise to significant desorption rates is described which incorporates desorption mass spectrometry in a real time feedback loop for continuous monitoring and control of layer composition by control of incident group V (e.g., arsenic) flux.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: August 6, 1996
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Keith R. Evans