Title :
Superconducting wire for NMR-tomography
Author :
Fil´kin, V.Y. ; Plashkin, Eh I. ; Salunin, N.I. ; Morozova, T.A. ; Zelenskiy, G.K. ; Vlasova, L.V. ; Drobyshev, V.A. ; Zinov´ev, V.G. ; Yakovlev, B.V. ; Oskolkov, E.A.
Author_Institution :
A.A Bochvar All-Union Sci. Res. Inst. of Inorganic Mater., Moscow, USSR
fDate :
1/1/1992 12:00:00 AM
Abstract :
The authors discuss the fabrication of Nb-Ti base superconducting wires having a superconductor packing factor of 15-20% and superconducting filaments of 70-80 μm dia. Three methods of precursor fabrication were tried. The NbTi-50 alloy base superconducting wire was fabricated for the magnet system of an NMR (nuclear magnetic resonance) tomograph; the wire diameter is 0.85 mm; the packing factor is 16%; the maximum length of a single piece is 29 km. The critical current density is 6.1×105 A/cm2 in a magnetic field of 1 T. The superconducting properties of similar wire on an NbTi-55 alloy base are also presented
Keywords :
biomedical NMR; biomedical equipment; composite superconductors; critical current density (superconductivity); niobium alloys; nuclear magnetic resonance spectroscopy; superconducting magnets; titanium alloys; 1 T; MRI; NMR-tomography; Nb-Ti superconducting wire; critical current density; multifilamentary wire; precursor fabrication; superconducting properties; superconductor packing factor; Aluminum alloys; Annealing; Assembly; Bonding; Capacitive sensors; Critical current density; Heat treatment; Shape; Superconducting filaments and wires; Thermomechanical processes;
Journal_Title :
Magnetics, IEEE Transactions on
