Title :
Investigation of aluminium stabilized superconductors
Author :
Dolgosheev, P.I. ; Svalov, G.G. ; Sytnikov, V.E. ; Rychagov, A.V.
Author_Institution :
Res. & Dev. Inst. for Cable Ind, Moscow, Russia
fDate :
6/1/1995 12:00:00 AM
Abstract :
Two types of aluminium stabilized superconducting cables: soldered and pressed have been under investigation. The paper describes cables, manufactured from multifilamentary NbTi/Cu wires in high purity aluminium, or copper-clad aluminium with a cross-section of 4/spl times/9 and 4.6/spl times/37 mm/sup 2/. Dependence of contact resistance on the "superconductor-aluminium matrix" interface, on transport current and magnetic field from 0 to 3 T, have been studied. Contact resistance was varied within the range from 1.4/spl times/10/sup -11/ to 2.2/spl times/10/sup -10/ Ohm/spl times/m. Dependence of contact resistance on the cable construction and electrical and physical characteristics of its components was analysed theoretically and experimentally. Discrepancy between experimental results and classic theory predictions is discussed.<>
Keywords :
aluminium; cable testing; contact resistance; copper; magnetic fields; multifilamentary superconductors; niobium alloys; superconducting cables; superconducting device testing; titanium alloys; 0 to 3 T; 1.4E-11 to 2.2E-10 ohm; NbTi-Cu-Al; aluminium stabilized superconducting cables; cable construction; contact resistance; copper-clad aluminium; high purity aluminium; magnetic field; multifilamentary NbTi/Cu wires; pressed cables; soldered cables; superconductor-aluminium matrix interface; transport current; Aluminum; Contact resistance; Copper; Multifilamentary superconductors; Niobium compounds; Pulp manufacturing; Superconducting cables; Superconductivity; Titanium compounds; Wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
