Superconductor Layer Next To Free Metal Containing Layer Patents (Class 505/236)
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Patent number: 10934438Abstract: Coatings and methods of using and producing the same are provided. In an exemplary embodiment, a coating includes a first ligand and a second ligand different than the first ligand. The first ligand includes a first carboxylic moiety, a first aromatic moiety, and a first linking moiety connecting the first carboxylic moiety to the first aromatic moiety. the first linking moiety includes an alkene. The second ligand includes a second carboxylic moiety. The coating includes a metal that is a lanthanoid metal, and the coating includes a coating resin.Type: GrantFiled: April 23, 2018Date of Patent: March 2, 2021Assignee: AXALTA COATING SYSTEMS IP CO., LLCInventors: Eric J. Schelter, Alexander V. Zabula, Robert C. Nahas, Jerome R. Robinson, Eric C. Houze, Gaurang Bhargava, Michael Kerins, Jr.
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Patent number: 9356220Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.Type: GrantFiled: August 4, 2014Date of Patent: May 31, 2016Assignee: Ambature, Inc.Inventors: Douglas J. Gilbert, Timothy S. Cale
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Publication number: 20150031548Abstract: A superconducting element (1) has a metallic substrate (2), an insulating layer (3), a superconductor layer (5) and a metallic protective layer (6), wherein the insulating layer (3) is arranged between the substrate (2) and the superconductor layer (5). In cross-section of the superconducting element (1), the insulating layer (3) extends at both ends past the area (BSL) of the substrate (2) covered by the superconductor layer (5) to galvanically separate the superconductor layer (5) and the metallic protective layer (6) from the substrate (2). The thickness D of the insulating layer (3) is selected in such a fashion that the superconducting element (1) has a transverse breakdown voltage between the metallic substrate (2) and both the superconductor layer (5) as well as the metallic protective layer (6) of at least 25 V. The superconducting element has a reduced risk of being damaged in case of a quench.Type: ApplicationFiled: July 10, 2014Publication date: January 29, 2015Inventor: Alexander Usoskin
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Publication number: 20140336054Abstract: Operational characteristics of an high temperature superconducting (“HTS”) film comprised of an HTS material may be improved by depositing a modifying material onto appropriate surfaces of the HTS film to create a modified HTS film. In some implementations of the invention, the HTS film may be in the form of a “c-film.” In some implementations of the invention, the HTS film may be in the form of an “a-b film,” an “a-film” or a “b-film.” The modified HTS film has improved operational characteristics over the HTS film alone or without the modifying material. Such operational characteristics may include operating in a superconducting state at increased temperatures, carrying additional electrical charge, operating with improved magnetic properties, operating with improved mechanic properties or other improved operational characteristics. In some implementations of the invention, the HTS material is a mixed-valence copper-oxide perovskite, such as, but not limited to YBCO.Type: ApplicationFiled: January 31, 2014Publication date: November 13, 2014Applicant: Ambature, Inc.Inventors: Douglas J. Gilbert, Timothy S. Cale
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Patent number: 8862193Abstract: A connector assembly of a superconducting fault current limiter includes a first superconducting tape element, an electrical connector electrically coupled to the first superconducting element at a first region of the electrical conductor, and a second superconducting tape element electrically coupled to the electrical connector in a second region of the electrical connector. The electrical connector comprises a unitary structure. The first superconducting tape element, the electrical connector, and the second superconducting tape element comprise may comprise a layer.Type: GrantFiled: December 29, 2010Date of Patent: October 14, 2014Assignee: Varian Semiconductor Equipment Associates, Inc.Inventor: Kasegn D. Tekletsadik
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Patent number: 8796181Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.Type: GrantFiled: June 13, 2012Date of Patent: August 5, 2014Assignee: Digital Signal CorporationInventors: Douglas J. Gilbert, Timothy S. Cale
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Patent number: 8731629Abstract: A junction box is provided which allows serial connection of the individual conductors of at least one high temperature superconductor (HTS) wire bundle. The junction box includes an electrical interface device disposed within a junction box housing. The interface device is configured receive both ends of each conductor of each HTS wire bundle, and to provide a superconductive electrical connection between respective first ends of conductors to respective second ends of other wire bundle conductors to form at least one superconductive multi-turn electromagnetic winding.Type: GrantFiled: March 28, 2008Date of Patent: May 20, 2014Assignee: American Superconductor CorporationInventors: Christopher G. King, James F. Maguire
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Patent number: 8700110Abstract: A rolled superconducting article includes: a cylindrical bobbin having a post in a cylindrical shape; a superconducting strip wound on the cylindrical bobbin in a rolled shape with a predetermined tension applied, wherein the superconducting strip is formed of a superconducting thin film, which is coated with a metal coating layer on a facing surface of the superconducting thin film, and a stabilizing substrate wound on the superconducting strip, wherein the stabilizing substrate is coated with a metal coating layer on a facing surface of the stabilizing substrate; an anti-bonding substrate wound on an outer surface of the stabilizing substrate with a predetermined tension applied; wherein the superconducting thin film is thermally adhered to the stabilizing substrate by heat-treating the rolled superconducting strip with the anti-bonding substrate wound therearound.Type: GrantFiled: May 31, 2012Date of Patent: April 15, 2014Assignee: Korea Electrotechnology Research InstituteInventors: Hong Soo Ha, Sang Soo Oh, Dong Woo Ha, Kyu Jung Song, Rock Kil Ko, Ho Seop Kim
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Publication number: 20140100119Abstract: A superconducting structure (1) has a plurality of linked band-segments (2), with each linked band-segment (2) having a substrate (3) and a superconducting layer deposited onto it (4). The linked band-segments (2) are joined to one another by superconducting layers (4) that face each other. Each linked band-segment (2) is joined to two additional band-segments (7a, 7b) in such a way that the superconducting layers (4) of the two additional band-segments (7a, 7b) and of the linked band-segment (2) face each other. The additional band-segments (7a, 7b) together substantially overlap the total length (L) of the linked band-segment (2). This provides for a superconducting structure, which exhibits high superconductivity and which is very suitable for long distances.Type: ApplicationFiled: October 7, 2013Publication date: April 10, 2014Inventors: Klaus Schlenga, Alexander Usoskin
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Patent number: 8658571Abstract: The invention relates to a method for the wet chemical production of an HTSL on a carrier, wherein an HTSL precursor solution comprising no trifluoroacetate may be utilized if the same is heated to a temperature Ts during the heat treatment of the HTSL precursor, wherein the remaining substances of the HTSL precursor solution form at least a partial melt, which is below the temperature at which RE2BaCuOx is formed, and which is deposited from the liquid phase while forming a peritectic.Type: GrantFiled: March 18, 2010Date of Patent: February 25, 2014Assignee: BASF SEInventors: Isabel van Driessche, Pieter Vermeir, Serge Hoste, Michael Baecker
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Patent number: 8644899Abstract: A coated conductor with a substantially round cross section has a high temperature superconductor layer which is sandwiched between an inner substrate layer and an outer substrate layer to place the high temperature superconductor layer in the region of neutral strain axis.Type: GrantFiled: July 15, 2010Date of Patent: February 4, 2014Assignee: NexansInventors: Arnaud Allais, Mark O. Rikel, Jürgen Ehrenberg, Christian-Eric Bruzek
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Publication number: 20130324415Abstract: The invention provides an oxide superconducting thin film, including: a base material; a superconducting layer containing a plurality of RE-based superconductor units including a rare earth element, CuO chains, and CuO2 planes; and an edge dislocation adjacent to the long CuO chain with respect to the layering direction. The CuO chains include long CuO chains that are present in the RE-based superconductor units in the vicinity of an interface between the superconducting layer and a layer adjacent to the base material side of the superconducting layer. The invention further provides an oxide superconducting thin film including a base material and an RE-based superconductor which includes CuO2 planes, CuO single chains and CuO double chains, and further includes a heterologous chain portion and a homologous chain portion.Type: ApplicationFiled: March 12, 2013Publication date: December 5, 2013Applicant: Furukawa Electric Co., Ltd.Inventor: Furukawa Electric Co., Ltd.
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Publication number: 20130196856Abstract: In some embodiments of the invention, superconducting structures are described. In certain embodiments the superconducting structures described are thin films of iron-based superconductors on textured substrates; in some aspects a method for producing thin films of iron-based superconductors on textured substrates is disclosed. In some embodiments applications of thin films of iron-based superconductors on textured substrates are described. Also contemplated is the formation of a film of iron-based superconductor having a thickness and an in-plane lattice constant formed on a textured substrate having a thickness and an in-plane lattice constant similar to the in-plane lattice constant of the iron-based superconductor.Type: ApplicationFiled: August 2, 2011Publication date: August 1, 2013Applicant: BROOKHAVENSCIENCE ASSOICATES, LLCInventors: Qiang Li, Weidong Si
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Publication number: 20130196858Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to BSSCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.Type: ApplicationFiled: March 15, 2013Publication date: August 1, 2013Applicant: Ambature, LLCInventor: Ambature, LLC
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Patent number: 8481460Abstract: A crystalline article includes a single-crystal ceramic fiber, tape or ribbon. The fiber, tape or ribbon has at least one crystallographic facet along its length, which is generally at least one meter long. In the case of sapphire, the facets are R-plane, M-plane, C-plane or A-plane facets. Epitaxial articles, including superconducting articles, can be formed on the fiber, tape or ribbon.Type: GrantFiled: June 21, 2012Date of Patent: July 9, 2013Assignee: UT-Battelle, LLCInventor: Amit Goyal
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Patent number: 8476199Abstract: This invention provides a rare earth-type tape-shaped oxide superconductor having excellent mechanical strength and superconducting properties and a composite substrate using for the same. Non-oriented and non-magnetic Ni-9 at % W alloy tapes (11, 21) were bonded onto both sides of a non-oriented and non-magnetic hastelloy tape (100) by a normal temperature bonding process, and an Ni-3 at % W alloy tape (12) having a cubic texture was bonded onto the surface of the tape (11) by a normal temperature bonding process. Thereafter, the heat-treatment was given in a reducing atmosphere and a bonding layer (50a) etc. was formed on the adhesive interface of each layer. Next, a (Ce, Gd)O2 intermediate layer (13) and a Ce2Zr2O7 intermediate layer (14) by an MOD process, a CeO2 intermediate layer (15), a YBCO superconducting film (16) by a TFA-MOD method, and a silver stabilization layer (17) were stacked sequentially on the surface of the tape (12). A critical current value (Ic) of this superconductor showed 150 A.Type: GrantFiled: February 21, 2008Date of Patent: July 2, 2013Assignees: International Superconductivity Technology Center, The Juridicial Foundation, SWCC Showa Cable Systems Co., Ltd.Inventors: Yuji Aoki, Tsutomu Koizumi, Yasuo Takahashi, Atsushi Kaneko, Takayo Hasegawa, Hiroshi Nakamura
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Publication number: 20130101832Abstract: The noble metal coating of the present invention is formed on a ceramic substrate. The noble metal coating has a thickness of less than 2 ?m and comprises a matrix metal and a ceramic fine particle. The matrix metal includes at least one metal selected from a group consisting of Pt, Pd, Ru, Rh, Os, Ir and Au as a main component. The content of the ceramic fine particle is preferably 3 to 30 parts by weight with respect to 100 parts by weight of the matrix metal. The ratio between the average particle size of the ceramic fine particle and the thickness of the noble metal coating is preferably 1/1.5 to 1/400.Type: ApplicationFiled: October 12, 2012Publication date: April 25, 2013Applicant: NGK INSULATORS, LTD.Inventor: NGK INSULATORS, LTD.
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Patent number: 8383959Abstract: A chamber or series of chambers is formed from layers of nested shells and used to manipulate a work product within the chambers. The shells are formed from highly ordered material structures, such as superconductors and metamaterials, and the work product is manipulated using energy that is directed from the outside of the chamber, through the nested shells and into the chamber. The nested shells have an open position and a closed position or have a bridge through which a working material can be passed from one set of nested shells to another set of nested shells. The superconducting shells can be type-1 or type-2, and the metamaterial shells can include any combination of a frequency agile metamaterial, a split ring resonator, an artificial structure of a wire medium, a unit cell of an artificial magnetic metamaterial, metamaterial superlattices and any combination thereof, or other highly ordered composite metamaterials.Type: GrantFiled: December 23, 2008Date of Patent: February 26, 2013Inventor: Stephen Burns Kessler
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Patent number: 8306590Abstract: Disclosed is a three layer process for making contact points to a high transition temperature superconductor (HTSC), particularly to (Bi,Pb)2 Sr2 Ca2 CU3019+x with and without silver in the superconductor. The contact structure is a three layer configuration with a perforated silver foil (3) sandwiched between two metal spray gun deposited silver layers (2,5) and subsequent heat treatment in air. The contact has been made on tubes and rods (1). The silver contacts are capable of carrying a continuous current of 200 Amps without adding any substantial heat load to the cryogen used to cool the HTSC. The contact resistance at 4.2 K is in the range of 1.5×10 (hoch?8) to 8.5? 10 (hoch?8) OHM in zero applied filed.Type: GrantFiled: July 23, 2010Date of Patent: November 6, 2012Assignee: Council of Scientific and Industrial ResearchInventors: Shrikant Ekbote, Gursharan Kaur Padam, Narendra Kumar Arora, Mukul Sharma, Ramesh Sethi, Mrinal Kanti Banerjee
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Patent number: 8290555Abstract: A superconducting wire having at least a superconducting thin film and a stabilizing film formed one on top of another in order on a substrate having a predetermined width and a predetermined length, the superconducting wire having at least one cut made along a direction of the length of the superconducting wire, the superconducting wire being bendable at the cut in a width direction.Type: GrantFiled: January 23, 2009Date of Patent: October 16, 2012Assignees: The Furukawa Electric Co., Ltd., International Superconductivity Technology Center, the Juridical Foundation, National University Corporation Yokohama National UniversityInventors: Masashi Yagi, Shinichi Mukoyama, Yuh Shiohara, Teruo Izumi, Naoyuki Amemiya
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Publication number: 20120258864Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.Type: ApplicationFiled: June 13, 2012Publication date: October 11, 2012Inventors: Douglas J. Gilbert, Timothy S. Cale
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Patent number: 8263531Abstract: Under one aspect, a laminated, spliced superconductor wire includes a superconductor joint, which includes (i) first and second superconductor wires, each wire including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer; and (ii) a conductive bridge, the conductive bridge including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer, wherein the cap layer of the conductive bridge is in electrically conductive contact with a portion of the cap layer of each of the first and second superconductor wires through an electrically conductive bonding material. The spliced wire also includes (b) a stabilizer structure surrounding at least a portion of the superconductor joint, wherein the superconductor joint is in electrical contact with the stabilizer structure; and (c) a substantially nonporous electrically conductive filler, wherein the filler substantially surrounds the superconductor joint.Type: GrantFiled: September 20, 2011Date of Patent: September 11, 2012Assignee: American Superconductor CorporationInventors: Alexander Otto, Eric R. Podtburg
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Patent number: 8238990Abstract: A superconducting joint that structurally binds a first superconducting segment to a second superconducting segment. The first and second superconducting segment each include corresponding areas containing a granular superconducting substance formed by a first element and a second element. The superconducting joint includes a solid non-superconducting binding formed from a source of the first element and a source of the second element combined to produce the granular superconducting substance around the solid non-superconducting binding to permit for the flow of superconducting current through the first superconducting segment and the second superconducting segment.Type: GrantFiled: April 16, 2009Date of Patent: August 7, 2012Assignee: ASG Superconductors, S.p.A.Inventor: Davide Nardelli
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Patent number: 8232232Abstract: An oxide target for laser vapor deposition, which is used when an oxide film is formed in a laser vapor deposition system, including: a fixed plate, an Ag-soldering layer bonded onto the fixed plate, an oxide-Ag mixed layer bonded onto the Ag-soldering layer; and an oxide layer bonded onto the oxide-Ag mixed layer.Type: GrantFiled: February 25, 2009Date of Patent: July 31, 2012Assignee: Fujikura Ltd.Inventor: Kazuomi Kakimoto
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Patent number: 8211833Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.Type: GrantFiled: June 4, 2010Date of Patent: July 3, 2012Assignee: Ambature, LLCInventors: Douglas J. Gilbert, Timothy S. Cale
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Patent number: 8204564Abstract: High-temperature superconductivity confined to nanometer-scale interfaces has been a long standing goal because of potential applications in electronic devices. The spontaneous formation of a superconducting interface in bilayers consisting of an insulator (La2CuO4) and a metal (La1?xSrxCuO4), neither of which is superconducting per se, is described. Depending upon the layering sequence of the bilayers, Tc may be either ˜15 K or ˜30 K. This highly robust phenomenon is confined to within 2-3 nm around the interface. After exposing the bilayer to ozone, Tc exceeds 50 K and this enhanced superconductivity is also shown to originate from a 1 to 2 unit cell thick interfacial layer. The results demonstrate that engineering artificial heterostructures provides a novel, unconventional way to fabricate stable, quasi two-dimensional high Tc phases and to significantly enhance superconducting properties in other superconductors.Type: GrantFiled: November 4, 2008Date of Patent: June 19, 2012Assignee: Brookhaven Science Associates, LLCInventors: Ivan Bozovic, Gennady Logvenov, Adrian Mihai Gozar
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Patent number: 8150486Abstract: The device has a quenchable superconductor (1), a first metallic member (2) electrically coupled with the quenchable superconductor (1), a second metallic member (3) electrically coupled to the first metallic member (2). The first metallic member (2) is thermally and electrically coupled with the quenchable superconductor (1) due to their direct surface contact. The superconducting device has a second metallic member (3) with a resistive element (4) and an electrical coupling (5) with the first metallic member (2). The resistive element (4) of the second metallic member (3) is thermally decoupled from the first metallic member (2). The first metallic member (2) has a substantially higher electrical resistance compared to the second metallic member (3).Type: GrantFiled: March 4, 2009Date of Patent: April 3, 2012Assignee: Bruker HTS GmbHInventor: Alexander Usoskin
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Patent number: 8148301Abstract: An oxide superconductor member is composed of a tape-shaped substrate, an intermediate layer formed on this substrate and an oxide superconductor thin film layer formed on this intermediate layer. A surface of the tape-shaped substrate is polished by continuously running the tape-shaped substrate. The polishing step includes initial polishing process and finishing process which are carried out such that the average surface roughness Ra of the substrate becomes 2 nanometers or less and the in-plane directionality of the intermediate layer becomes 5° or less after the polishing step.Type: GrantFiled: August 24, 2007Date of Patent: April 3, 2012Assignee: NIHON Micro Coating Co., Ltd.Inventors: Sanaki Horimoto, Takuya Nagamine, Takehiro Watanabe, Fumi Murokawa, Yuji Horie, Noriyuki Kumasaka, Masahiro Hosoi
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Patent number: 8143194Abstract: An oxide superconductor member is composed of a tape-shaped substrate, an intermediate layer formed on this substrate and an oxide superconductor thin film layer formed on this intermediate layer. A surface of the tape-shaped substrate is polished by continuously running the tape-shaped substrate. The polishing step includes initial polishing process and finishing process which are carried out such that the average surface roughness Ra of the substrate becomes 2 nanometers or less and the in-plane directionality of the intermediate layer becomes 5° or less after the polishing step.Type: GrantFiled: August 1, 2007Date of Patent: March 27, 2012Assignee: NIHON Micro Coating Co., Ltd.Inventors: Sanaki Horimoto, Takuya Nagamine, Takehiro Watanabe, Fumi Murokawa, Yuji Horie, Noriyuki Kumasaka, Masahiro Hosoi
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Patent number: 8088713Abstract: To prepare a superconducting fault-current limiting element having a high sharing electric field at low cost, a superconducting fault-current limiting element includes an insulator substrate; a superconductive thin film formed on the insulator substrate; and an alloy layer formed on the superconducting thin film, said alloy layer having a room-temperature resistivity higher by twice or more than the room-temperature resistivity of a pure metal, in which, when the superconducting thin film goes into a normal conductive state by an overcurrent, the overcurrent flowing through the superconducting thin film is transferred only to the alloy layer.Type: GrantFiled: June 17, 2005Date of Patent: January 3, 2012Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hirofumi Yamasaki, Mitsuho Furuse
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Publication number: 20110312500Abstract: Method of depositing a buffer layer of epitaxial metal oxide on a functionalised surface of a textured metal substrate, said method comprising the following steps: (1) a layer is deposited of a precursor of an oxide of the type A2?xB2+xO7 where A represents a metal of valency 3 or a mixture of several of these metals, and B a metal of valency 4, and x is a number between ?0.1 and +0.1, from a solution of carboxylates of said metals A and B, (2) said layer of oxide precursor is left to dry, (3) heat treatment is carried out in order to pyrolyse said oxide precursor and to form the oxide, at least part of said heat treatment being carried out under a flow of reducing gas.Type: ApplicationFiled: December 18, 2009Publication date: December 22, 2011Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Philippe Odier, Stéphanie Morlens, Cyril Millon, Tristan Caroff, Carmen Jimenez, Jean-Louis Soubetroux, Arnaud Allais, Mark Rikel
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Patent number: 8034746Abstract: Disclosed herein is a method of manufacturing round wire using superconducting tape, including the steps of: slitting superconducting tape into superconducting tape strips; silver-coating the slit superconducting tape strips; laminating the silver-coated superconducting tape strips to form a superconducting tape laminate having a square cross-section; holding the superconducting tape laminate; heat-treating the fixed superconducting tape laminate to cause diffusion junction between silver; and copper-plating the heat-treated superconducting tape laminate to have a circular section.Type: GrantFiled: June 30, 2009Date of Patent: October 11, 2011Assignee: Korea Electrotechnology Research InstituteInventors: Hong Soo Ha, Sang Soo Oh, Dong Woo Ha, Rock Kil Ko, Ho Sup Kim
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Patent number: 8030246Abstract: Under one aspect, a laminated, spliced superconductor wire includes a superconductor joint, which includes (i) first and second superconductor wires, each wire including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer; and (ii) a conductive bridge, the conductive bridge including a substrate, a superconductor layer overlying the substrate, and a cap layer overlying the superconductor layer, wherein the cap layer of the conductive bridge is in electrically conductive contact with a portion of the cap layer of each of the first and second superconductor wires through an electrically conductive bonding material. The spliced wire also includes (b) a stabilizer structure surrounding at least a portion of the superconductor joint, wherein the superconductor joint is in electrical contact with the stabilizer structure; and (c) a substantially nonporous electrically conductive filler, wherein the filler substantially surrounds the superconductor joint.Type: GrantFiled: July 23, 2007Date of Patent: October 4, 2011Assignee: American Superconductor CorporationInventors: Alexander Otto, Eric R. Podtburg
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Publication number: 20110212841Abstract: Method of making a low resistivity electrical connection between an electrical conductor and an iron pnictide superconductor involves connecting the electrical conductor and superconductor using a tin or tin-based material therebetween, such as using a tin or tin-based solder. The superconductor can be based on doped AFe2As2, where A can be Ca, Sr, Ba, Eu or combinations thereof for purposes of illustration only.Type: ApplicationFiled: February 15, 2011Publication date: September 1, 2011Inventors: Makariy Tanatar, Ruslan Prozorov, Ni Ni, Sergey Bud'ko, Paul Canfield
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Patent number: 8008233Abstract: A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula RE2?xB2+xO7 with RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and ?0.4?x?+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.Type: GrantFiled: June 30, 2008Date of Patent: August 30, 2011Assignees: Nexans, Cambridge Enterprise LimitedInventors: Dirk Isfort, Joachim Bock, Judith Louise Driscoll, Ahmed Kursumovic
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Patent number: 7910521Abstract: A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula RE2?xB2+xO7 with RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and ?0.4?x?+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.Type: GrantFiled: June 30, 2008Date of Patent: March 22, 2011Inventors: Dirk Isfort, Joachim Bock, Judith Louise Driscoll, Ahmed Kursumovic
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Patent number: 7893006Abstract: Under one aspect, a method of making a superconductor wire includes providing an oxide superconductor layer overlaying a substrate; forming a substantially continuous barrier layer over the oxide superconductor layer, the barrier layer including metal; depositing a layer of metal particles over the barrier layer, said depositing including applying a liquid including metal particles over the barrier layer; and sintering the layer of metal particles to form a substantially continuous metal layer over the barrier layer. In one or more embodiments, the oxide superconductor layer is oxygen-deficient, and the method may include oxidizing the oxygen-deficient oxide superconductor layer. At least a portion of the sintering and the oxidizing may occur simultaneously, for example by performing them at an oxygen partial pressure and a temperature sufficient to both sinter the metal particles and to oxidize the oxygen-deficient oxide superconductor layer.Type: GrantFiled: March 23, 2007Date of Patent: February 22, 2011Assignee: American Superconductor CorporationInventors: Yibing Huang, Thomas Kodenkandath, Joseph Lynch, Martin W. Rupich, Wei Zhang
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Patent number: 7879762Abstract: A superconductor has a conductive path with a metallic substrate strip, a super-conductive layer made of a AB2CU3Ox type high-Tc-super conductive material, at least one insulating buffer layer which is arranged therebetween, and a metallic cover layer which is arranged thereon. At least one contacting element made of a normal conductive contacting material and arranged at least on one longitudinal side of the structure between the cover layer and the substrate strip enables a predetermined normally conductive limitation of the current-limiting device to be obtained.Type: GrantFiled: September 27, 2005Date of Patent: February 1, 2011Assignee: Siemens AktiengesellschaftInventors: Hans-Peter Krämer, Wolfgang Schmidt
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Publication number: 20100323899Abstract: A superconductive element is described, comprising a rigid support made of a non-superconductive material, said support comprising at least one superconductive track formed by a groove containing a superconductive material having a density equal to at least 85% of the value of its theoretical density, and the process for producing said element. The present invention also relates to the possible uses of the superconductive elements, and also to superconductive devices comprising said superconductive elements.Type: ApplicationFiled: June 14, 2010Publication date: December 23, 2010Applicant: EDISON S.p.A.Inventor: Giovanni Giunchi
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Publication number: 20100267568Abstract: The present invention relates to a superconducting film having a substrate and a superconductor layer formed on the substrate, in which nano grooves are formed parallel to a current flowing direction on a substrate surface on which the superconductor layer is formed and two-dimensional crystal defects are introduced in the superconductor layer on the nano grooves, and a method of manufacturing this superconducting film. A superconducting film of the invention, which is obtained at low cost and has very high Jc, is useful in applications such as cables, magnets, shields, current limiters, microwave devices, and semifinished products of these articles.Type: ApplicationFiled: April 30, 2010Publication date: October 21, 2010Inventors: Kaname Matsumoto, Masashi Mukaida, Yutaka Yoshida, Ataru Ichinose, Shigeru Horii
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Patent number: 7811972Abstract: A target surface of a tape-shaped substrate of an oxide superconductor with an intermediate layer formed on this target surface and an oxide superconductor thin film is polished by causing the tape-shaped substrate to continuously run. The polishing step includes an initial polishing process for carrying out random polishing of the target surface and a finishing process that is carried out after the initial polishing process for forming grooves on the target surface along the running direction of the substrate. The intermediate layer has an in-plane directionality of 7° or less. The tape-shaped substrate is fabricated by rolling nickel, a nickel alloys or stainless steel.Type: GrantFiled: August 19, 2008Date of Patent: October 12, 2010Assignee: NIHON Micro Coating Co., Ltd.Inventors: Yuji Horie, Noriyuki Kumasaka, Sanaki Horimoto
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Patent number: 7772158Abstract: The resistive current-limiting device contains a strip-shaped superconductor having a conductive structure which is made of a metallic substrate strip, an insulating, oxidic buffer layer, a super-conductive layer made of a type AB2Cu3Ox oxidically high-Tc-super conductive material, an insulating buffer layer which is arranged therebetween, and a metal cover layer. At least one of the lateral edges of the conductive structure is mechanically deformed such that the cover layer and the substrate strip are arranged in electric contact.Type: GrantFiled: September 27, 2005Date of Patent: August 10, 2010Assignee: Siemens AktiengesellschaftInventors: Hans-Peter Krämer, Wolfgang Schmidt
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Patent number: 7745376Abstract: The invention provides a superconductor comprising particles made of a superconductive material, and a conductive material. The conductive material is selected to be driven to a superconductive state when in proximity to the superconductive material, and preferably at least includes bismuth. An unbroken length of the conductive material is located sufficiently close to a plurality of the particles to be driven to a superconductive state by the superconductive material.Type: GrantFiled: August 2, 2005Date of Patent: June 29, 2010Assignee: Nove Technologies, Inc.Inventor: Matthew J. Holcomb
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Patent number: 7737086Abstract: A method is provided for producing a superconductive electrical conductor (7) in which a layer of an yttrium-barium-copper oxide (YBCO) is applied as a superconductive material onto a textured metal base directly or after prior application of a buffer layer, and is subjected to a heat treatment. To this end an interlayer of a metallic material which is compatible with the crystal structure of YBCO, or with the structure of a buffer layer suitable for the application of YBCO, is initially applied all around onto an elongate metal support (1). The support (1) provided with the interlayer is subsequently processed so that predetermined texturing is imparted to the interlayer as a metal base for the layer of YBCO material or for the buffer layer. The layer of superconductive YBCO material is then applied all around, directly onto the textured interlayer or onto the buffer layer previously applied thereon, and the heat treatment is finally carried out.Type: GrantFiled: October 23, 2007Date of Patent: June 15, 2010Assignee: NexansInventors: Arnaud Allais, Nat Dirk Isfort
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Patent number: 7718573Abstract: A method for producing an oxide superconductor by partially melting and solidifying the precursor of the oxide superconductor is a method wherein the precursor is placed on a substrate material containing pure metal or a compound which is meltable in the precursor when the precursor is in a partially molten state, and partially melting and solidifying the precursor in said state.Type: GrantFiled: January 22, 2004Date of Patent: May 18, 2010Assignee: Origin Electric Company, LtdInventors: Motohide Matsui, Masato Murakami
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Patent number: 7698804Abstract: A fully transposed composite superconductor of the Roebel bar type is produced. The superconductor is formed from combines superconductors. The process step for forming the subconductors, which are being configured with a lateral projection into a region of a neighbouring subconductor, is separated from the stranding step. Carrier strips, which are coated with the superconductive material, are used as the conductors.Type: GrantFiled: May 14, 2003Date of Patent: April 20, 2010Assignee: Siemens AktiengesellschaftInventor: Martino Leghissa
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Patent number: 7691786Abstract: The present invention relates to a method of preparing an oxide superconducting film, the method includes reacting a metal acetate containing metal M selected from the group consisting of lanthanum, neodymium and samarium with fluorocarboxylic acid having not less than three carbon atoms, reacting barium acetate with fluorocarboxylic acid having two carbon atoms, reacting copper acetate with fluorocarboxylic acid having not less than two carbon atoms, respectively, followed by refining reaction products, dissolving the reaction products in methanol such that a molar ratio of the metal M, barium and copper is 1:2:3 to prepare a coating solution, and coating a substrate with the coating solution to form a gel film, followed by calcining and firing the gel film to prepare an oxide superconducting film.Type: GrantFiled: March 3, 2008Date of Patent: April 6, 2010Assignees: Kabushiki Kaisha Toshiba, International Superconductivity Technology CenterInventors: Takeshi Araki, Koichi Nakao, Izumi Hirabayashi
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Patent number: 7674751Abstract: A method of making a laminated superconductor wire includes providing an assembly, where the assembly includes a substrate; a superconductor layer overlaying a surface of the substrate, the superconductor layer having a defined pattern; and a cap layer; and slitting the assembly in accordance with the defined pattern of the superconductor layer to form a sealed wire. Slitting the assembly in accordance with the defined pattern may form multiple sealed wires, and the substrate may be substantially wider than the sealed wires.Type: GrantFiled: July 21, 2006Date of Patent: March 9, 2010Assignee: American Superconductor CorporationInventors: Alexis P. Malozemoff, Martin W. Rupich, Douglas C. Folts
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Patent number: 7627356Abstract: A multifilament high temperature superconductor with thick, striated stabilizer is disclosed, including a substrate, a buffer layer, a multifilament superconductor layer, and at least one thick stabilizer layer. Also disclosed are components incorporating superconducting tapes and methods for manufacturing same.Type: GrantFiled: July 14, 2006Date of Patent: December 1, 2009Assignee: SuperPower, Inc.Inventors: Xun Zhang, Venkat Selvamanickam
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Patent number: 7622425Abstract: A method is provided for producing a superconductive electrical conductor, in which a layer of an yttrium-barium-copper oxide (YBCO) is applied as a superconductive material onto a textured metal substrate, and is subjected to a heat treatment. In order to produce a wire-shaped conductor, a textured metal substrate, provided as a strip (2), is initially shaped in its longitudinal direction around an elongate metal support (1) with a circular cross section to form a slotted tube (3) having edges extending in the longitudinal direction and adjoining one another at a slot (4). The slotted tube (3) is next closed by welding the slot (4) shut, and the closed tube (9) is then contracted by pulling until it bears on the support (1). The layer (12) of superconductive YBCO material is thereupon applied all around, and the heat treatment is finally carried out.Type: GrantFiled: October 23, 2007Date of Patent: November 24, 2009Assignee: NexansInventors: Arnaud Allais, Dirk Isfort, Claus-Friedrich Theune, Klaus Porcher