Recent developments in fabrication and properties of Ag-clad BSCCO conductors
- Argonne National Lab., IL (United States). Energy Technology Div.
- Intermagnetics General Corp., Latham, NY (United States)
Long-length mono- and multifilament Ag-clad BSCCO (Bi-Sr-Ca-Cu-O) superconductors with consistent current transport properties were fabricated by the powder-in-tube method. I{sub c} of 42 A was recorded in short lengths of 37 filament conductors. J{sub c} up to 12,000 A/cm{sup 2} was observed at 77 K in 124-m-long monocore andd 850-m-long multifilament conductors. A high-{Tc} magnet, fabricated from 770 m of monofilament conductor, generated a high field of {approx}1 T at 4.2 K in a field of {approx}20 T. In-situ strain tests showed that multifilament conductors have better strain tolerance than monofilament conductors. In-situ bending of the monofilament conductors indicate that their irreversible strain limit increases with decreasing superconductor/Ag ratio. Superconducting joints and multilayer Ag/superconductor composites have been fabricated by chemical etching. Typical I{sub c} through such joints was 23 A, or {approx}70% of that carried by normal monofilament tapes and {approx}60% of that carried by multifilament tapes. Preliminary results with multilayer tapes show that continuous Ag reinforcement of the BSCCO core improves strain tolerance of the tapes so they can carry 90% of their initial I{sub 2} at 1% bend strain ins pite of a higher superconductor/Ag ratio than unreinforced tapes.
- 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:
- 218856
- Report Number(s):
- ANL/ET/CP--87395; CONF-960202--21; ON: DE96009052
- Country of Publication:
- United States
- Language:
- English
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