Abstract
Main stages of diffusion interaction between tin alloy with copper matrix and the material of Nb filaments in superconductors with 1 central and 7 distributed tin sources, containing 2000 to 14000 filaments have been investigated. The main temperature conditions for intermediate and final heat treatment stages have been chosen. Tin distribution over a copper matrix cross section has been shown not to exceed 2% at optimum heat treatment conditions. The conductor's current carrying capacity interconnection with heat treatment routes has been studied. It was shown that the correct choice of a heat treatment route provides for high values of critical current density upto 1/spl times/10/sup 5/A/cm/sup 2/ (12 T).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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