Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-12-27
1991-08-13
Silbaugh, Jan H.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
26421111, 264332, 505740, H01L 3912, C04B 3560
Patent
active
050396587
ABSTRACT:
Bi.sub.2 Sr.sub.2 Ca,Cu.sub.2 2212 superconductive oxide fiber having enhanced current carrying capacity is prepared by forming an intimate mixture of the Bi.sub.2 Sr.sub.2 Ca.sub.1 Cu.sub.2 superconductive oxide precursors or their functional equivalents, firing the mixture at a temperature of at least 400.degree. C. but below the melting point of the superconductive oxide, dispersing the fired mixture in an organic binder, extruding the dispersion as fiber extrudate, firing the fiber at a temperature sufficient to cause the organic binder to burn off and to cause melting of the superconductive oxide while substantially retaining the filamentary shape, and then cooling the fiber.
REFERENCES:
Miaoulis et al., "Zone-Melting. . . , Superconducting Films", J. Phys. D. App. Phys, (1989).
Applied Physics Letters, Levinson et al., "Laser Zone-Melted Bi-Sr-Ca-Cu-O Thick Films", Oct. 16, 1989.
Japanese Journal of Applied Physics, vol. 28, No. 8, Aug. 1989, pp. L1402-L1404, Tomoko Goto.
Journal of Applied Physics, vol. 65, No. 6, Mar. 15, 1989, pp. 2392-2397, Sarkar et al.
Japanese Journal of Applied Physics, vol. 27, No. 10, Oct. 1988, pp. L1845-L1847, Goto and Takeuchi.
Superconductivity Science Technology, vol. 1, No. 1, Aug. 29, 1988, pp. 71-74, P. W. May et al.
Materials Letters, vol. 6, Nos. 11, 12, Jul. 1988, pp. 390-392, G. R. Wagner et al.
E. I. Du Pont de Nemours and Company
Fiorilla Christopher A.
Silbaugh Jan H.
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