Method of forming a tape of the high temperature oxide supercond

Details Method of forming a tape of the high temperature oxide supercond Method of forming a tape of the high temperature oxide supercond

1991-06-28

1993-03-09

Silbaugh, Jan H.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

156 89, 264 61, 505739, 505740, H01L 3912

Patent

active

051927390

ABSTRACT:
A method of forming a superconducting tape having a silver sheath and a polycrystalline oxide superconductor core includes, forming at least one silver foil to have a receiving surface for supporting a deposit, and at least one enclosing surface that can cover the deposit and overlap another portion of the foil so that the surfaces form the sheath. The foil has a first thickness at the receiving surface and a second thickness at the enclosing surface. A precursor deposit of the superconductor is formed on the receiving surface. The enclosing surface is wrapped to cover the deposit and overlap another portion of the foil to form the sheath. The first and second thicknesses being preselected so that the thickness of the overlapping foils is equivalent to the thickness of foil oppositely facing the overlapping foils. The overlapping foils are sealed, and annealed to reaction-sinter the sealed deposit and form the tape.

REFERENCES:
patent: 4906609 (1990-03-01), Yamauchi et al.
patent: 5030615 (1991-07-01), Awazu et al.
"Potential Methods for the Fabrication of High-Tc Superconductors for Wires and Cables", Kyoji Tachikawa and Kazumasa Togano, Proceedings of the IEEE, vol. 77, No. 8, Aug. 1989.
"Development of High-Tc Superconductor Wire with High Critical Current Density", Toshimi Matsumoto, Katsuzo Aihara, Masahiro Seido, Hitachi Review, vol. 39 (1990), No. 1.

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