American Superconductor Corporation

Other

Uchicago Argonne, LLC

Abb Technology Ag

Prysmian S.p.a.

Steven Fleshler

Gilbert N Riley, Jr

Alexander Otto

Gregory L Snitchler

John D Scudiere

Bruce B Gamble

Qi Li

Leslie G Fritzemeier

Elliott D Thompson

Cornelis Leo Hans Thieme

Ronald D Parrella

Robert E Schwall

William J Michels

Mark D Teplitsky

Dingan Yu

Martin W Rupich

Swarn S Kalsi

Martin Lakner

Peter R Roberts

Willi Paul

Craig J Christopherson

David M Buczek

Marco Nassi

Alexis P Malozemoff

Ulrich Welp

Dietrich Bonmann

Dean J Miller

Wai-Kwong Kwok

Sergio Spreafico

Harry Zueger

Paola Caracino

Ralph P Mason

Derek Patrick Daly

Richard E Harnois

Robert C Diehl

Stephen R Norman

Gilbert N Riley

Gilber N Riley

A method comprising irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer with protons having an energy of 1 to 6 MeV. The irradiating process produces an irradiated layer that comprises randomly dispersed defects with an average diameter in the range of 1-10 nm.

Creation of high-pinning microstructures in post production YBCO coated conductors

Enhanced high temperature coated superconductors joined at a cap layer

Enhanced high temperature coated superconductors

An elongated current limiting composite material comprising one or more high-temperature superconductor filaments and a second electrically conductive member, which may include a sheath of high bulk resistivity surrounding the filament. The current limiter exhibits dissipation in the range of 0.05-0.5 V/cm at currents of 3-10 times the operating current, thereby minimizing fault currents and improving recovery capability.

Current limiting composite material

The invention features a superconducting conductor for use in a preselected fluid cryogen including a composite ceramic superconducting wire having an outer surface along its length; and a sealing structure hermetically surrounding the outer surface to prevent the cryogen from infiltrating into the wire and degrading its superconducting properties, even under pressurized conditions. The superconducting conductor can be used in superconducting cabling and coil applications. The sealing structure can be formed by laminating metallic tapes to the wire, encircling at least one metallic sheet around the outer surface of the wire, welding a plurality of metallic sheets to one another to encircle the outer surface of the wire, or forming a polymer coating completely covering the outer surface of the wire.

Encapsulated ceramic superconductors

The present invention provides a (Bi,Pb)SCCO-2223 oxide superconductor composite which exhibits improved critical current density and critical current density retention in the presence of magnetic fields. Retention of critical current density in 0.1 T fields (77 K, &perp; ab plane) of greater than 35% is disclosed. Significant improvements in oxide superconductor wire current carrying capacity in a magnetic field are obtained by subjecting the oxide superconductor composite to a post-processing heat treatment which reduces the amount of lead in the (Bi,Pb)SCCO-2223 phase and forms a lead-rich non-superconducting phase. The heat treatment is carried out under conditions which localize the lead-rich phase at high energy sites in the composite.

High performance (Bi,Pb)2Sr2Ca2Cu3Oy composites

The present invention provides a (Bi,Pb)SCCO-2223 oxide superconductor composite which exhibits improved critical current density and critical current density retention in the presence of magnetic fields. Retention of critical current density in 0.1 T fields (77 K, .perp. ab plane) of greater than 35% is disclosed. Significant improvements in oxide superconductor wire current carrying capacity in a magnetic field are obtained by subjecting the oxide superconductor composite to a post-processing heat treatment which reduces the amount of lead in the (Bi,Pb)SCCO-2223 phase and forms a lead-rich non-superconducting phase. The heat treatment is carried out under conditions which localize the lead-rich phase at high energy sites in the composite.

Reaction for high performance (Bi,Pb).sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3

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Brookline, MA, United States of America

Steven Fleshler