Melt processing of Yb-123 tapes

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The innovation of a simple, scalable process for manufacturing long-length conductors of HTS is essential to potential commercial applications such as power cables, magnets, and transformers. In this paper the authors demonstrate that melt processing of Yb-123 tapes made by the PIT route is an alternative to the coated conductor and Bi-2223 PIT tape fabrication techniques. Ag-clad Yb-123 tapes were fabricated by groove rolling and subsequently, melt processed in different oxygen partial pressures in a zone-melting furnace with a gradient of 140 C/cm. The transition temperatures measured were found to be around 81 K undermost processing conditions. EPMA of the ... continued below

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7 p.

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Athur, S. P.; Balachandran, U. & Salama, K. February 17, 2000.

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Description

The innovation of a simple, scalable process for manufacturing long-length conductors of HTS is essential to potential commercial applications such as power cables, magnets, and transformers. In this paper the authors demonstrate that melt processing of Yb-123 tapes made by the PIT route is an alternative to the coated conductor and Bi-2223 PIT tape fabrication techniques. Ag-clad Yb-123 tapes were fabricated by groove rolling and subsequently, melt processed in different oxygen partial pressures in a zone-melting furnace with a gradient of 140 C/cm. The transition temperatures measured were found to be around 81 K undermost processing conditions. EPMA of the tapes processed under different conditions show the 123 phase to be Ba deficient and Cu and Yb rich. Critical current was measured at various temperatures from 77 K to 4.2 K. The J{sub c} increased with decrease in pO{sub 2}. The highest I{sub c} obtained was 52 A at 4.2 K.

Physical Description

7 p.

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INIS; OSTI as DE00751925

Medium: P; Size: 7 pages

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  • 6th International Conference on Materials and Mechanisms of Superductivity and High Temperature Superconductors, Houston, TX (US), 02/20/2000--02/25/2000

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  • Report No.: ANL/ET/CP-101147
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751925
  • Archival Resource Key: ark:/67531/metadc706004

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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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  • February 17, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 3:34 p.m.

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Athur, S. P.; Balachandran, U. & Salama, K. Melt processing of Yb-123 tapes, article, February 17, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc706004/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.