Microfilamentary superconducting composites by the external diffusion method: Nb3Sn
- 1 August 1980
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 51 (8) , 4332-4337
- https://doi.org/10.1063/1.328291
Abstract
Microfilamentary superconducting composites of Nb3Sn fibers in bronze matrices were produced by the external diffusion method together with a solution preanneal to suppress Kirkendall porosity. The resulting materials had superior superconducting and mechanical properties at 4.2 °K, carrying overall current densities well over 104 A/cm2 at 15.4 T even for low (12%) superconductor fractions; over 105 A/cm2 at 12 T; and tolerating (in some cases) strains of the order of 2% without degradation, and stresses in the 500–1000 MPa range. There is evidence that finer superconducting filaments can tolerate much greater intrinsic strains without degradation; also, that the composites investigated were not optimized in terms of residual stresses, matrix composition, or filament spacing or size, so that further improvements are possible.This publication has 8 references indexed in Scilit:
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