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CEC-ICMC 2019 - Abstracts, Timetable and Presentations

21–25 Jul 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

Conference Management

Session

M2Or1A - BSCCO - Conductors

M2Or1A
23 Jul 2019, 09:30
Level 6, Room 15-16

Level 6, Room 15-16

Conveners

M2Or1A - BSCCO - Conductors

  • Timothy Haugan (U.S. Air Force Research Laboratory)
  • Eric Hellstrom (ASC/NHMFL - Florida State University)

Presentation materials

There are no materials yet.

  1. 1081. M2Or1A-01: Advances in Bi-2212 Processing, Coil Fabrication, and Testing for High-Field Magnets
    E.E. Hellstrom (Applied Superconductivity Center)
    23/07/2019, 09:30
    Contributed Oral Presentation

    Bi-2212 is a round-wire, high temperature superconductor that develops high Jc for high-field magnets when it is overpressure (OP) processed. Recent advances in Bi-2212 powder, wire fabrication, and OP heat treatment have improved the performance of the Bi-2212 wire. We are designing, winding, OP heat treating, and characterizing the performance of Bi-2212 coils and comparing their measured...

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  2. 958. M2Or1A-02: Variation in strain sensitivity and microstructure as a function of overpressure processing conditions for Ag-sheathed Bi-2212 round wire
    Prof. Matthew C. Jewell (Materials Science Center, University of Wisconsin-Eau Claire)
    23/07/2019, 09:45
    Contributed Oral Presentation

    Significant increases in the current-carrying capacity (Ic) of Ag-sheathed Bi-2212 over the past several years has made this material a viable candidate for high-field magnets. However, the management of Ic degradation as a function of applied strain remains a challenge, as does the implementation of overpressure processing (OP) heat-treatment conditions for magnets. In this study, we...

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  3. 1009. M2Or1A-03: Key Components Enabling the Strong A-axis Growth Grain Texture and Clean Grain Boundary Nanostructure in High Critical Current Density Bi-2212 Round Wires.
    Temidayo Abiola Oloye (National High Magnetic Field Laboratory)
    23/07/2019, 10:00
    Contributed Oral Presentation

    Bi2Sr2CaCu2Ox (Bi-2212) is the only high temperature superconductor (HTS) available in the round wire form preferred by magnet builders. Recent advances in the processing have raised its critical current density (Jc) > 6500 A/mm2 at 4.2 K and 15 T, placing Bi-2212 at the forefront of candidates for future HTS high field magnets. The key microstructure for high Jc is a unique a-axis grown...

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  4. 949. M2Or1A-04: Predensification of Bi-2212 wires and its impact on critical current density
    S Imam Hossain (National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, FL 32310, USA)
    23/07/2019, 10:15
    Contributed Oral Presentation

    Achieving high Jc in Bi2Sr2CaCu2Ox (Bi-2212) round wire requires overpressure heat treatment (OPHT) to eliminate current-limiting bubbles. The OPHT has a maximum temperature of ~890 °C and is done with 50 bar overpressure with 1 bar oxygen partial pressure (PO2). During OPHT, the diameter of the Bi-2212 wire shrinks about 4%, with about 80% of this densification occurring during a 2 h hold at...

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  5. 1076. M2Or1A-05: Development of low loss HTS 2212 wires and cables for ac and ramped field coils
    Dr Alexander Otto (Solid Material Solutions, LLC)
    23/07/2019, 10:30
    Contributed Oral Presentation

    It is well known from designs analysis and data, that much lighter weight, higher power density and more efficient motors and generators will be enabled by HTS provided it is developed in suitable forms, preferably operating at or above 40 K. Although DC rotors can be wound with HTS tapes, for example 2G, to generate the required 3 to 5 T fields, stators operate in AC mode albeit at lower...

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