Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes

Dorr M, Eversmann K, Fischer K, Hütten A, Staiger T (1996)
Czechoslovak Journal of Physics 46: 1689-1690.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Applications of Bi(2223) tapes in superconducting devices require a reduction of critical current degradation induced by mechanical or thermal stress. Critical currents have been measured dependent on thermocycles and axial strain. The monofilament Ag-sheathed tapes show a degradation of 10% at a critical strain epsilon=0.3%, while multifilament tapes are nearly stable to epsilon=0.6%. A considerable improvement could be reached using Ag90Cu10 sheathes. In opposite to the abrupt irreversible degradation in Ag-sheathed tapes the process in Cu hardened tapes is more gradual and the critical E-values are doubled approximately. Micrographs show that microcracks are the reason for the critical current degradation. Their density is dependent on core properties.
Erscheinungsjahr
Zeitschriftentitel
Czechoslovak Journal of Physics
Band
46
Seite
1689-1690
ISSN
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Dorr M, Eversmann K, Fischer K, Hütten A, Staiger T. Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes. Czechoslovak Journal of Physics. 1996;46:1689-1690.
Dorr, M., Eversmann, K., Fischer, K., Hütten, A., & Staiger, T. (1996). Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes. Czechoslovak Journal of Physics, 46, 1689-1690.
Dorr, M., Eversmann, K., Fischer, K., Hütten, A., and Staiger, T. (1996). Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes. Czechoslovak Journal of Physics 46, 1689-1690.
Dorr, M., et al., 1996. Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes. Czechoslovak Journal of Physics, 46, p 1689-1690.
M. Dorr, et al., “Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes”, Czechoslovak Journal of Physics, vol. 46, 1996, pp. 1689-1690.
Dorr, M., Eversmann, K., Fischer, K., Hütten, A., Staiger, T.: Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes. Czechoslovak Journal of Physics. 46, 1689-1690 (1996).
Dorr, M, Eversmann, K, Fischer, K, Hütten, Andreas, and Staiger, T. “Improvement of strain dependent critical current in Ag- and Ag/Cu-sheathed Bi(2223) superconducting tapes”. Czechoslovak Journal of Physics 46 (1996): 1689-1690.