Superconducting composite wire made from magnesium diboride

Details Superconducting composite wire made from magnesium diboride Superconducting composite wire made from magnesium diboride

H - Electricity

01

L

H01L 39/14 (2006.01) H01B 12/06 (2006.01) H01F 6/06 (2006.01) H01L 39/16 (2006.01) H01L 39/24 (2006.01)

Patent

CA 2574687

A superconducting composite wire with superconducting phase of magnesium diboride comprises: a core of conductive metal (1); a plurality of filaments in which each filament (3) comprises a core of magnesium diboride (5), placed around said conductive metal core (1); - an outer metallic sheath (4) for containment and mechanical reinforcement, surrounding the said plurality of filaments; and - at least one layer (2, 2a, 2b) of metal chemically compatible with magnesium diboride and capable of acting as an obstacle to the diffusion of the conductive metal of said conductive metal core (1) towards the said filaments (3), up to 980~C where the said at least one layer is applied a) as a coating (2) of the said conductive metal core and/or b) as a coating (2a) of the said filaments (3), and/or c) as a coating (2b) of the said magnesium diboride core (5) of the said filaments (3).

L'invention concerne un câble composite supraconducteur à phase supraconductrice de diborure de magnésium, qui comprend: une âme (1) de métal conducteur, une pluralité de filaments (3) comprenant chacun une âme (5) de diborure de magnésium, disposés autour de ladite âme (1) de métal conducteur, une gaine (4) métallique externe servant d'enveloppe et de renfort mécanique, entourant ladite pluralité de filaments, et au moins une couche (2, 2a, 2b) de métal chimiquement compatible avec le diborure de magnésium et capable de faire obstacle à la diffusion du métal conducteur de ladite âme (1) de métal conducteur vers lesdits filaments (3) jusqu'à 980 °C, cette ou ces couches étant appliquées de manière à former a) un enrobage (2) de ladite âme de métal conducteur et/ou b) un enrobage (2a) desdits filaments (3), et/ou c) un enrobage (2b) de ladite âme (5) de diborure de magnésium desdits filaments (3).

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