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Effect of the amount of tungsten on the superconducting properties of Ni-W substrates based coated conductors.

ORAL

Abstract

One of the main challenges in the use of high temperature superconducting wires, the YBa2Cu3O7-δ (YBCO) coated conductors (CC) in electric power applications is the amount of dissipation or loss. Ni-W alloys are used as substrates for rolling assisted biaxially textured substrate (RABiTS) tapes because of their comparably low loss and ease of manufacturing. In this work, we have determined the amount of ferromagnetic loss in a series of biaxially textured Ni1-xWx materials with compositions x = 5 and 9 at.% W. We also measured the critical current density Jc in two different samples of coated conductor; one fabricated with the Ni-5at.%W substrate and the other with the Ni-9at.%W substrate. The aim is to determine if the type of substrate used will influence the amount and the property of Jc measured. While the Ni-5at.%W shows a higher ferromagnetism (and loss), the Jc measured in both CC is fairly similar. The field and temperature dependence of the Jc in the two samples is also analyzed.

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Presenters

  • Anota Ijaduola

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., American Superconductor Corp., Westborough, MA 01581, USA., University of North Georgia

Authors

  • Anota Ijaduola

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., American Superconductor Corp., Westborough, MA 01581, USA., University of North Georgia

  • Anota Ijaduola

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., American Superconductor Corp., Westborough, MA 01581, USA., University of North Georgia

  • Anota Ijaduola

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., American Superconductor Corp., Westborough, MA 01581, USA., University of North Georgia

  • Anota Ijaduola

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., American Superconductor Corp., Westborough, MA 01581, USA., University of North Georgia