Method of producing superconducting ceramic wire

Details Method of producing superconducting ceramic wire Method of producing superconducting ceramic wire

1989-11-13

1990-12-04

Lacey, David L.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505733, 505740, 505742, 65 2, 65 33, C03B 3700

Patent

active

049754165

ABSTRACT:
A superconducting ceramic wire is prepared from a superconducting ceramic-forming oxide composition by melting, the composition and quenching the melt to form a dense glass, which is soften and wire-drawn in a furnace. The resulting wire is heat-treated to form crystals and made into a superconducting ceramic wire. The wire has a flexibility and remarkable superconductivity which can further be improved by applying pressure to be made more dense and repeating the heat-treatment.

REFERENCES:
patent: 4134747 (1979-01-01), Pierson et al.
patent: 4861751 (1989-08-01), Tenhover
Jin et al., High Tc Superconductors-Composite Wire Fabrication, Appl. Phys. Lett., Jul. 20, '87, pp. 203-204.
Zheng et al., Bi.sub.4 Ca.sub.3 Sr.sub.3 Cu.sub.4 O.sub.y Ceramic Fibers from Crystallization of Glasses, Appl. Phys. Lett., Sep. 18, '89, pp. 1255-1257.
Rojek et al., 115 K Superconductivity in Bi-Pb-(Ag,Nb,Sb)-Sr-Ca-Cu-O Systems, Solid State Communications, vol. 72, No. 1, Oct. '89.
Miura et al., As-Grown Crystallized Thin Film of Bi-Sr-Ca-Cu-O and its Low Temperature Annealing Effect, Appl. Phys. Lett., Apr. 10, '89, pp. 1474-1476.
Lee et al., Effect of Oxygen Partial Pressure on the Transformation Between High T.sub.c . . . , Appl. Phys. Lett., Sep. 18, '89, pp. 1249-1251.
Tanaka et al., Composition Dependence at High T.sub.c Phase Formation in Pb Doped Bi-Sr-Ca-Cu-O Thin Films, Appl. Phys. Lett., Sep. 18, '89, pp. 1252-1254.
Skumryev et al., Physical Properties of Bi,Ca,Cr,Cu.sub.2 O.sub.x Superconductor Obtained by Rapid Quenching . . . , Physica L 152 (1988), pp. 315-320.
Yurek et al., Direct Synthesis of a Metal/Superconducting Oxide Composite by Oxidation . . . , Jour. Electrochem. Soc., vol. 134, No. 10, Oct. '87, pp. 2635-2636.
Bhargava et al., Crystallization of Ba.sub.2 YCu.sub.3 O.sub.x from Glasses in the System BaO-Y.sub.2 O.sub.3 -CuO-B.sub.2 O.sub.3, Materials Research Society, Extended Abstracts, Apr. 5-9, '88, pp. 59-61.
Zheng et al., Bi.sub.4 Sr.sub.3 Ca.sub.3 Cu.sub.4 O.sub.16 Glass and Superconducting Glass Ceramics, Physical Review B, vol. 38, No. 10, Oct. 1, '88, pp. 7166-7168.
Ramesh et al., Polytypoid Structure of Pb-Modified Bi-Ca-Sr-Cu-O Superconductor, Physical Review B, vol. 38, No. 10, Oct. 1, '88, pp. 7070-7073.
Jin et al., Fabrication of Dense Ba.sub.2 YCu.sub.3 O.sub.7 .delta. Superconductor Wire by Molten Oxide Processing, Appl. Phys. Lett., Sep. 28, '87, PTO: 8/13/87.
Jin et al., Superconductivity in the Bi-Sr-Ca-Cu-O Compounds with Noble Metal Additions, Appl. Phys. Lett., May 9, '88, pp. 1628-1630.
Jpn. J. Appl. Phys. Letter, 52(19), May 9, 1988.
"High T.sub.c Superconducting Glass Ceramics Based on the Bi-Ca-Sr-Cu-O System", IEEE Transactions on Magnetics, vol. 25, No. 2, Mar. 1989, pp. 2150-2153, IEEE, New York, U.S. & Applied Superconductivity Conference, Aug. 21, 88, San Francisco, U.S.; T. Komatsu et al.
"Preparation of High-T.sub.c Superconducting bi-Pb-Sr-Ca-Cu-O Ceramics by the Melt Quenching Method", Japanese Journal of Applied Physics, vol. 27, No. 12, Dec. 1988, pp. L2293-L2295, Tokyo, JP; T. Komatsu et al.

Affiliated with

Also associated with

Rating

Method of producing superconducting ceramic wire does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing superconducting ceramic wire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing superconducting ceramic wire will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-883440