Processing and characterization of Ag-clad Bi-2223 superconductors
Conference
·
OSTI ID:383007
- Argonne National Lab., IL (United States). Energy Technology Div.
- Pittsburgh Univ., PA (United States). Dept. of Materials Science and Engineering
- Intermagnetics General Corp., Latham, NY (United States)
Practical applications of high-temperature superconductors will be governed by their current transport and mechanical characteristics. With careful control of the processing parameters high-quality long- length mono- and multifilament Bi-2223 conductors have been fabricated by the powder-in-tube technique. A critical current density (Jc) of up to 1.2 x 104 A cm{sup -2} has been observed at 77 K in a 1260-m-long multifilament conductor containing 37 monocore filaments. A high-temperature superconducting magnet and a prototype transformer were fabricated and characterized from such long-length conductors. Efforts further improve the current characteristics of the Bi-2223 tapes resulted in the development of the wire-in-tube technique. A Jc value >105 A cm{sup -2} at 77 K and in self field have been obtained in a Bi-2223 tape fabricated by the wire- in-tube method. Extensive studies on the in-situ strain characteristics of the mono- and multifilament conductors have been conducted. Multilayer silver/superconductor composite tapes, fabricated by a novel chemical etching technique, were also observed to exhibit improved strain tolerance characteristics.
- Research Organization:
- Argonne National Lab., IL (United States). Energy Technology Div.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 383007
- Report Number(s):
- ANL/ET/CP--89144; CONF-960850--6; ON: DE96014857
- Country of Publication:
- United States
- Language:
- English
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