Title :
Development of APC Nb-Ti composite conductors at Supercon, Inc
Author :
Rudziak, M.K. ; Seuntjens, J.M. ; Renaud, C.V. ; Wong, T. ; Wong, J.
Author_Institution :
Supercon Inc., Sbrewbury, MA, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
Supercon has developed a unique method for the fabrication of artificial pinning center (APC) NbTi superconductors. In this process, pure niobium and titanium layers are partially diffused so as to produce a superconductor/normal structure that will provide flux pinning at final conductor size. No precipitation heat treatments are required. Process development has resulted in Conductors with filament diameters as small as 6 and as large as 90 microns. Excellent conductor ductility and J/sub c/ performance have been demonstrated. Supercon APC conductor has been utilized in solenoid, model dipole, and MRI magnets. An overview of the development program mill be presented along with a status report on conductor scale-up efforts.<>
Keywords :
critical current density (superconductivity); flux pinning; materials preparation; multifilamentary superconductors; niobium alloys; superconducting magnets; titanium alloys; 6 to 90 mum; MRI magnets; Nb-Ti; NbTi; artificial pinning center composite superconductors; conductor ductility; conductor scale-up efforts; critical current density; development program; filament diameters; flux pinning; model dipole magnets; overview; solenoid magnets; superconductor/normal structure; Conductors; Fabrication; Flux pinning; Heat treatment; Magnetic resonance imaging; Magnets; Niobium compounds; Solenoids; Superconductivity; Titanium compounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
