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Development and characterization of aluminum clad superconductors

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4 Author(s)
Kanithi, H. ; Intermagnetics Gen. Corp., Waterbury, CT, USA ; Phillips, D. ; King, C. ; Zeitlin, B.

A fabrication technique capable of high-volume production is described that was developed to clad conventional NbTi/Cu composite conductors with high-purity aluminum. Various sizes and shapes of practical superconductors were clad using aluminum of initial residual resistance ratios (RRR) ranging from 200:1 to 3000:1. The quality of bond between Al and Cu was investigated metallographically and by shear-strength tests. Electrical properties, such as the current-carrying capacity and RRR as a function of magnetic field for several Al-stabilized conductors, were measured. The results of the investigation are presented and the particular advantages of the Al-clad conductors over the fully copper-stabilized configurations are discussed.

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Magnetics, IEEE Transactions on  (Volume:24 ,  Issue: 2 )