Coating: (classes 204, 427/62) Patents (Class 505/818)
  • Patent number: 8530391
    Abstract: A device for coating at least one substrate or for producing at least one molding by means of at least one cold gas spraying pistol, wherein the cold gas spraying pistol and the substrate or molding to be coated are arranged in a vacuum chamber, and also a method for cold gas spraying relating thereto in such a manner that while eliminating the wire production, the coil winding and also the cast in procedure, a thoroughly compact coil without a degree of freedom of movement (elimination of the quench risk) can be produced, it is suggested that the particles have at least to some extent an electrically conducting, in particular superconducting, property and at least to some extent an electrically poorly conducting or electrically insulating property.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 10, 2013
    Assignee: Linde Aktiengesellschaft
    Inventor: Matthias Bohn
  • Patent number: 8486864
    Abstract: The present invention relates to a method for producing a phase-separated layer useful as a flux pinning substrate for a superconducting film, wherein the method includes subjecting at least a first and a second target material to a sputtering deposition technique in order that a phase-separated layer is deposited epitaxially on a primary substrate containing an ordered surface layer. The invention is also directed to a method for producing a superconducting tape containing pinning defects therein by depositing a superconducting film on a phase-separated layer produced by the method described above.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: July 16, 2013
    Assignees: UT-Battelle, LLC, University of Tennessee Research Foundation
    Inventors: Tolga Aytug, Mariappan Parans Paranthaman, Ozgur Polat
  • Patent number: 8061016
    Abstract: A method of fabricating a superconducting coil is provided which includes fabricating individual coil windings by depositing, shaping and texturing superconductive material in situ on a former which has a substantially curved surface.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: November 22, 2011
    Assignee: 3-CS Ltd
    Inventor: Eamonn Maher
  • Patent number: 6740624
    Abstract: A method and an apparatus for spraying materials onto a substrate to produce a coating thereon is described which allows very thick layers of complex metal oxides to be produced. The apparatus and method are particularly suitable for producing superconducting coatings.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: May 25, 2004
    Assignee: Universiteit Gent
    Inventors: Serge Hoste, Frans Persyn, Isabel Van Driessche
  • Patent number: 6391829
    Abstract: According to one aspect of the invention a method is provided for forming a superconductor composite. A salt is heated to a melting temperature of the salt. Superconductor particles are added to the salt. A metal composition is added to the salt. The metal composition is decomposed into a metal substance and another substance. The metal substance plates out onto surfaces of the superconductor particles to form metal plated particles. The metal plated superconductor particles are removed from the salt.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: May 21, 2002
    Assignee: Nove Technologies, Inc.
    Inventor: Matthew J. Holcomb
  • Patent number: 6297199
    Abstract: There are disclosed an oxide superconductor which is made of an oxide superconductive bulk body (e.g. a rare earth element base copper-oxide superconductive bulk body) which has a resin impregnated layer (e.g. epoxy base resin impregnated layer), and, optionally, a proper amount of silver or a silver oxide; and a process for producing the above oxide superconductor which comprises impregnating a resin into an oxide superconductive bulk body by bringing the resin in liquid form into contact with the bulk body which is preserved in an atmosphere of reduced pressure. The above superconductor is capable of assuring a high trapped magnetic field and maintaining its performance for a long period of time without being affected by internal or external forces such as electromagnetic forces or thermal strains or by corrosive environments.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: October 2, 2001
    Assignees: International Superconductvity Technology Center, Railway Technical Research Institute
    Inventors: Masaru Tomita, Masato Murakami
  • Patent number: 5786306
    Abstract: A method is provided for fabrication of superconducting oxides and superconducting oxide composites and for joining superconductors to other materials. A coating of a molten alloy containing the metallic elements of the oxide is applied to a substrate surface and oxidized to form the superconducting oxide. A material can be contacted to the molten alloy which is subsequently oxidized joining the material to the resulting superconducting oxide coating. Substrates of varied composition and shape can be coated or joined by this method.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: July 28, 1998
    Assignee: Massachusetts Institute of Technology
    Inventors: Wei Gao, John B. Vander Sande
  • Patent number: 5670204
    Abstract: Nb--Sn precursor articles are described that include a Nb alloy article that is at least partially coated with a layer of a Sn alloy, such as a Sn--Cu alloy. The precursor articles described herein have a controlled concentration of the impurity elements As and S in the Sn alloy layer. The concentration of these elements in the Sn alloy layer is less than or equal to 50 ppm by weight. This invention also describes a method for making Nb--Sn precursor articles having a controlled concentration of As and S impurities.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: September 23, 1997
    Assignee: General Electric Company
    Inventors: Melissa Lea Murray, Bruce Alan Knudsen, Christopher Gus King, Mark Gilbert Benz, Robert John Zabala, Anthony Mantone
  • Patent number: 5552370
    Abstract: A method for making metal/ceramic superconductor thick film structures including the steps of preparing a silver/superconductor ink, applying the ink to a substrate, evaporating the ink's binder, decomposing a silver compound in the residue to coat the superconductor grains, sintering the coated superconductor grains, and oxygenating the superconductor grains through the silver coating. The resultant inter-granular silver increases the critical current and mechanical strength of the superconductor.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: September 3, 1996
    Assignee: Hewlett-Packard Company
    Inventors: John T. Anderson, V. K. Nagesh, Richard C. Ruby
  • Patent number: 5472936
    Abstract: A method for making triniobium tin foil is disclosed where the niobium-based foil with an oxide layer is passed continuously at a set speed into an enclosed chamber. The enclosed chamber has an inert atmosphere which is substantially oxygen free. Upon entering the chamber, the foil passes through a decomposition anneal furnace, a low temperature tin dip, and then a high temperature reaction anneal furnace before exiting the chamber as triniobium tin foil.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: December 5, 1995
    Assignee: General Electric Company
    Inventors: Mark G. Benz, Neil A. Johnson, Melissa L. Murray, Robert J. Zabala, Louis E. Hibbs, Jr., Bruce A. Knudsen
  • Patent number: 5376625
    Abstract: A thin film superconductor assembly is disclosed along with a method of fabricating same. The assembly comprises a self-supporting substrate defining at least a portion of a containment for a flow of cryogenic fluid, a dielectric layer adherent to a surface of the substrate, a thin film superconductor adherent to the dielectric layer and a moisture and oxygen impervious electrically insulating coating covering the thin film superconductor. A method of forming such thin film superconductor assembly, wherein the dielectric layer consists essentially of aluminum nitride, comprises growing the aluminum nitride dielectric layer integrally on the surface of the substrate.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: December 27, 1994
    Assignee: Ford Motor Company
    Inventor: Robert C. McCune
  • Patent number: 5252546
    Abstract: An organic superconductive material and a process for producing the same are disclosed, the material comprising a polymer having dispersed therein an organic superconductive substance comprising an electron donor and an electron acceptor.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: October 12, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yoshinobu Ueba, Yoshiyuki Okamoto
  • Patent number: 5162295
    Abstract: The invention provides a method for forming deposits of superconducting ceramics by sequentially electrodepositing layers of metals, of a type and in proportion suitable for forming a superconducting ceramic, to form a precursor metal deposit, followed by oxidizing the precursor deposit to form a superconducting ceramic deposit. Optionally, the electroplating steps are conducted in such a manner that a patterned precursor deposit results, to obtain a patterned superconducting deposit after oxidation.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: November 10, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Mohammad Behi, MacRae Maxfield, Ray Baughman, Helmut Eckhardt, Zafar Igbal
  • Patent number: 5100863
    Abstract: An improved method of manufacturing superconducting ceramics in the form of a thin film are described. The thin film is first formed of a superimposed structure composed of three films which contain a rare earth metal, an alkaline metal and copper respectively. Then the superimposed thin film is fired to convert to superconducting film.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: March 31, 1992
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shumpei Yamazaki
  • Patent number: 5057201
    Abstract: This invention relates to a process for producing a superconducting thin film, characterized in that a target made of a compound oxide containing Ba; one element M selected from a group consisting of Y, La, Gd, Ho Er and Yb; and Cu is used for carrying out physical vapor deposition to produce a thin film of perovskite type oxide or quasi-perovskite type oxide. The target may be made of preliminary sintered material which is obtained by preliminary sintering of a powder mixture including oxides, carbonates, nitrates or sulfates of Ba; one element M selected from a group consisting of Y, La, Gd, Ho Er and Yb; and Cu, or of finally sintered material which is obtained by a final sintering of preliminary sintered material at a temperature ranging from to 1, C., preferably from to 1, C. The physical vapor deposition is performed by high-frequency sputtering technique under Ar and O.sub.2 containing atmosphere, at a partial pressure of Ar ranging from 1.0.times.10.sup.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: October 15, 1991
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Nobuhiko Fujita, Naoji Fujimori, Hideo Itozaki, Saburo Tanaka, Keizo Harada, Tetsuji Jodai
  • Patent number: 4994434
    Abstract: A process is disclosed of producing on a crystalline silicon substrate a barrier layer triad capable of protecting a rare earth alkaline earth copper oxide conductive coating from direct interaction with the substrate. A silica layer of at least 2000 .ANG. in thickness is deposited on the silicon substrate, and followed by deposition on the silica layer of a Group 4 heavy metal to form a layer having a thickness in the range of from 1500 to 3000 .ANG.. Heating the layers in the absence of a reactive atmosphere to permit oxygen migration from the silica layer forms a barrier layer triad consisting of a silica first triad layer located adjacent the silicon substrate, a heavy Group 4 metal oxide third triad layer remote from the silicon substrate, and a Group 4 heavy metal silicide second triad layer interposed between the first and third triad layers.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: February 19, 1991
    Assignee: Eastman Kodak Company
    Inventors: Liang-Sun Hung, John A. Agostinelli
  • Patent number: 4983572
    Abstract: A superconductive body of an oxidic superconductive material having good mechanical properties is characterized in that the oxidic material forms a matrix through which finely divided particles are mixed at least the surface of which consists of a metal or a metal alloy. Particles in the form of fibres are preferably used and the surface of the particles consists of silver or gold.
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: January 8, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Gijsbertus De With
  • Patent number: 4914081
    Abstract: Processes are described for electroplating metal or alloy on superconducting oxides using either a nonaqueous bath or aqueous bath with suitably applied potential. Articles made in accordance with the electroplating process are also described.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: April 3, 1990
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Barry Miller, Joseph M. Rosamilia
  • Patent number: 4891355
    Abstract: A method of producing a superconducting circuit by forming a film having a superconducting phase on a substrate and applying a laser beam to a part of the superconducting phase to cause transition of the part of the superconducting phase into a non-superconducting phase.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: January 2, 1990
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Noriki Hayashi, Satoshi Takano, Kenji Miyazaki, Noriyuki Yoshida
  • Patent number: 4879270
    Abstract: The invention relates to an improvement in a method of forming deposits of superconducting ceramics. Generally, such ceramics are formed by electrodepositing a mixture of metals of the type, and in proportions sufficient to be oxidized into ceramic, onto a substrate. The electrodeposited mixture is then oxidized under conditions sufficient to result in a super conducting ceramic deposit. The improvement resides in conducting the electrodeposition in a manner which results in a patterned electrodeposition prior to conducting oxidation.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: November 7, 1989
    Assignee: Allied-Signal Inc.
    Inventors: MacRae Maxfield, Ray H. Baughman, Zafar Igbal, Helmut Eckhardt
  • Patent number: 4870051
    Abstract: A method of forming films of superconducting ceramics is disclosed. The method involves electrodepositing a mixture of metals of the type which can be oxidized into superconducting ceramic. Thereafter, the metals deposited are oxidized to form the superconducting ceramic deposit. Deposits made by this method are also disclosed.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: September 26, 1989
    Assignee: Allied-Signal Inc.
    Inventors: MacRae Maxfield, Ray H. Baughman, Zafar Iqbal, Helmut Eckhardt
  • Patent number: 4865681
    Abstract: A method of growing an epitaxial interface comprising the steps of select a crystalline substrate (e.g. Si) characterized by a crystal lattice substantially similar to the crystal lattice to be grown (e.g. CuCl); applying a magnetic field to the crystalline substrate; and growing a crystal layer on the selected substrate in the presence of a magnetic field. Preferably the crystal growth takes place from a liquid phase eutectic mixture (e.g. CuCl/NH.sub.4 Cl) at conditions near the eutectic point. The epitaxial interface produced is very reproducible, uniform and stable, yet the region appears to be highly strained due to the lattice mismatch. Anomalous superdiamagnetism, very low electrical resistivity and the ability to trap and channel light (index of refraction approaching infinity) are observed at the epitaxial interface at essentially ambient conditions suggestive of high temperature superconductivity.
    Type: Grant
    Filed: December 24, 1985
    Date of Patent: September 12, 1989
    Assignee: Board of Regents Acting for and on Behalf of the University of Michigan
    Inventor: Brenton L. Mattes
  • Patent number: 4857360
    Abstract: The quality of superconducting cavity resonators depends to a very great extent on the surface quality of the cavities. The invention relates to a process for the manufacture of superconducting cavity resonators with improved surface quality, whereby even complex shaped cavity resonators can be made with cavities coated with NbN.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: August 15, 1989
    Assignee: Kernforschungszentrum Karlsruhe GmbH
    Inventors: Jurgen Halbritter, Hartmut Baumgartner