Process for producing a multifilamentary superconducting...

Details Process for producing a multifilamentary superconducting... Process for producing a multifilamentary superconducting...

H - Electricity

01

B

H01B 12/02 (2006.01) H01L 39/24 (2006.01)

Patent

CA 2178565

A process for producing a multifilamentary conductive tape of the type comprising a plurality of layers of a high-temperature superconducting material, incorporated in a mutually spaced relationship within a metal matrix, comprises the steps of: a) submitting to plastic deformation individual metal tubes including a precursor of a superconducting material, so as to obtain a plurality of elementary tapes structurally independent from one another; b) coupling the tapes so obtained by means of a heat treatment at a temperature and for a time sufficient to establish a stable mutual connection between said tapes. The multifilamentary tape so obtained or possibly the independent tapes, are then subjected to at least one sintering step, which may be followed by one or more cycles of plastic deformation and sintering. Advantageously, the process of the invention allows to increase the fill factor of the tape, with a corresponding increase in the critical current in superconductivity conditions.

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