Method for producing MgB2 superconductor
AssigneeNational Institute for Materials Science
InventorsAkihiro Kikuchi, Kiyoshi Inoue, Yasuo Iijima, Yuji Yoshida
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Abstract
A alloy (Mg—X) of metal (X) and Mg in a liquid phase is made to react with B in a solid phase at a low temperature to manufacture a superconductor, which contains a large amount of MgB2 potential for MRI, linear motorcar, superconducting cavity, electric power transmission cable, high-magnetic field magnet for medical units, electric power storage (SMES), and the like and is formed in the shape of bulk, wire, and foil, by heat treatment performed at a low temperature for a short time and at low cost.
Claims15
A method of manufacturing a MgB2 superconductor which comprises making a Mg—X alloy react with B through diffusional reaction at a temperature of 800° C. or lower to manufacture a superconductor having MgB2 as a main component,
- wherein the Mg—X alloy is an alloy of Mg and an element X forming an alloy having a lower melting point than the melting point of Mg, and X is from 25 at % to 30 at % or from 45 at % to 95 at % of Bi based on Mg.
A method of manufacturing a MgB2 superconductor which comprises making a Mg—X alloy react with B through diffusional reaction at a temperature from 550° C. to 650° C. to manufacture a superconductor having MgB2 as a main component,
- wherein the Mg—X alloy is an alloy of Mg and an element X forming an alloy having a lower melting point than the melting point of Mg, and X is 95 at % or lower of Ga based on Mg.
Dependencies are inferred from the claim text.