Title :
Status of powder-in-tube Nb3Sn conductor development at Supercon
Author :
Renaud, Charles V., Jr. ; Motowidlo, Leszek R. ; Wong, Terence
Author_Institution :
Supercon Inc., Shrewsbury, MA, USA
fDate :
6/1/2003 12:00:00 AM
Abstract :
Multifilament Nb3Sn superconductor has been produced by the powder-in-tube approach. The conductor possesses filament diameters below 60 micrometers with layer Jc of 4158 A/mm2 at 12 T and 4.2 K. Niobium tube fabrication, wire processing, filament uniformity, and Nb3Sn microstructure are discussed, and the superconducting properties are presented. A process for producing phase pure NbSn2 powder of 1-5 micrometer particle size has been developed and is discussed along with plans for further conductor improvements.
Keywords :
critical current density (superconductivity); multifilamentary superconductors; niobium alloys; powder metallurgy; tin alloys; 12 T; 4.2 K; Nb3Sn; Nb3Sn multifilamentary superconductor; NbSn2; NbSn2 powder; critical current density; fabrication process; microstructure; powder-in-tube method; superconducting properties; Conductors; Copper; Fabrication; Magnetic hysteresis; Niobium; Powders; Superconducting epitaxial layers; Superconducting filaments and wires; Superconducting magnets; Tin;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812377
