Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1991-08-21
1993-05-04
Wyszomierski, George
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
148 96, 505737, 505740, 505742, H01C 3914
Patent
active
052082156
ABSTRACT:
A superconducting tape is fabricated with a composition of Bi.sub.1.81 Pb.sub.0.43 Sr.sub.1.71 Ca.sub.2.14 Cu.sub.3 O.sub.x. The powder of composition is filled into a silver tube and the silver tube is processed by rolling or pressing into a thin tape. The thin tape is heat treated and pressed for several times until the superconducting phase is formed to the tape and the thickness of the tape is equal to or less than 0.07 mm. The resulting tape is highly flexible such that it can be bent into an arc with a very small radius of curvature and nonetheless provide high critical current density.
REFERENCES:
patent: 4952554 (1990-08-01), Jin et al.
patent: 4975416 (1990-12-01), Onishi et al.
patent: 5045527 (1991-09-01), Ikeno et al.
patent: 5100865 (1992-03-01), Yamamoto et al.
patent: 5102863 (1992-04-01), Cass et al.
A technical paper entitled: "High-Jc Silver-Sheathed Bi-Based Superconducting Wires" published in Ieee Transactions on Magnetics, vol. 27, No. 2, Mar. 1991, pp. 231-238.
Chen Kouth
Horng Lian-Haei
Hurng Weir-Mirn
Koo Horng-Show
Lee Wun-Hsin
Industrial Technology Research Institute
Wyszomierski George
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