Texturing of REBCO using temperature gradient.
Isothermal melt texturing is currently a well-established technique for manufacturing superconducting materials with high trapped magnetic field and levitation forces. For conductor applications, however, a temperature gradient needs to be employed in order to align the oriented domains with the a-b planes where the current will be flowing over long lengths. Melt-textured Y-123 bars of length 100 mm with Jc values of 70,000 A/cm2 at 77 K in self-field have been routinely manufactured by directional solidification. The presence of temperature gradient also lends itself to faster texturing rates. Recently, Ag-clad Yb-123 tapes made by the powder-in-tube process were successfully melt textured in the presence of a temperature gradient and controlled oxygen partial pressure. These tapes exhibit the potential to be an alternative to BSCCO tapes, for relatively high temperature and magnetic field applications.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- EE; OGA
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 949423
- Report Number(s):
- ANL/ET/JA-40788; TRN: US201012%%218
- Journal Information:
- Physica C, Vol. 357-360, Issue 2001
- Country of Publication:
- United States
- Language:
- ENGLISH
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Fabrication of Yb-123 Tapes
Texturing of high T{sub c} superconducting polycrystalline fibers/wires by laser-driven directional solidification in an thermal gradient