Recent advances in processing of Ag-clad Bi-2223 superconductors

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Enhancements in the transport current properties of long lengths of multifilament Ag-sheathed (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconducting tapes were made as a function of increased packing density of precursor powder, improved mechanical deformation, and adjusted cooling rate. Improved processing parameters had a pronounced effect on the transport critical current (I{sub c}) of the superconducting tapes, at 77 K and zero applied magnetic field, an I{sub c} of 60 A was obtained in short length samples (4 cm), an I{sub c} of 54 A in a 164 m length, and 18 A in a 1,260 m length. These ... continued below

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8 p.

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Balachandran, U.; Lelovic, M.; Deis, T. & Eror, N.G. August 1, 1997.

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Enhancements in the transport current properties of long lengths of multifilament Ag-sheathed (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconducting tapes were made as a function of increased packing density of precursor powder, improved mechanical deformation, and adjusted cooling rate. Improved processing parameters had a pronounced effect on the transport critical current (I{sub c}) of the superconducting tapes, at 77 K and zero applied magnetic field, an I{sub c} of 60 A was obtained in short length samples (4 cm), an I{sub c} of 54 A in a 164 m length, and 18 A in a 1,260 m length. These enhancements were based on the increase in packing density accompanied with improved mechanical deformation and cooling schedule. Maximum critical current values were two to three times higher in slow-cooled tapes than in fast-cooled tapes.

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8 p.

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OSTI as DE97054177

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  • Joint cryogenic engineering conference and international cryogenic materials conference, Portland, OR (United States), 27 Jul - 1 Aug 1997

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  • Other: DE97054177
  • Report No.: ANL/ET/CP--91938
  • Report No.: CONF-970758--
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 561874
  • Archival Resource Key: ark:/67531/metadc695797

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 15, 2015, 12:01 p.m.

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Balachandran, U.; Lelovic, M.; Deis, T. & Eror, N.G. Recent advances in processing of Ag-clad Bi-2223 superconductors, article, August 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc695797/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.