Method including a heat treatment of manufacturing superconducting wires based on MgB.sub.2
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United States of America Patent
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Mar 4, 2008
Grant Date -
Dec 16, 2004
app pub date -
Oct 16, 2002
filing date -
Oct 19, 2001
priority date (Note) -
Expired
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Abstract
A method of manufacturing superconducting wires based on MgB.sub.2 is described and includes the steps of: production of a cylindrical wire comprising an MgB.sub.2 core surrounded by a metal covering, in which the core has a lattice structure formed by grains of the compound MgB.sub.2; rolling of the wire to produce a conductor in tape form; and subsequent heat treatment by heating to a temperature of between 800.degree. C. to 870.degree. C. This last step helps to increase the connection between the MgB.sub.2 grains whilst retaining the structural defects produced in the rolling step, thus producing a superconducting wire with greater current-transport capacity.
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