Tensile strain/transverse compressive stress dependence of critical current in Bi(2212) superconducting tapes with Zr-reinforced Ag sheath

K. Katagiri, K. Kasaba, Y. Shoji, T. Takahashi, K. Watanabe, K. Noto, T. Okada, M. Hiraoka, S. Yuhya

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The tensile mechanical property and the axial tensile strain/transverse compressive stress dependence of the critical current Ic in mono- and 19-core Bi(2212) superconducting tapes with Zr-reinforced Ag sheaths were evaluated at a temperature of 4.2 K and a magnetic field of 14 T. Replacement of Ag sheath by Ag-Zr alloy sheath increased the 0.2% proof stress and the onset tensile strain for Ic degradation although Ic decreased markedly. Double layer sheath with Ag inner layer and Ag-Zr alloy outer layer improved both the stress-strain relation and the strain characteristics of Ic without remarkable degradation in Ic. The increase in the number of core from 1-19 degraded the tensile strain vs. Ic characteristics of the tape, although no marked change in critical current density is observed. The alloying of sheath also improved the transverse compressive stress vs. Ic characteristics. The effects of Zr alloying of Ag sheath on the mechanical behavior and the stress/strain dependence of Ic of the superconducting composites are briefly discussed with emphasis on texturing of the oxide superconductor. Published by Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalCryogenics
Volume38
Issue number3
DOIs
Publication statusPublished - 1998 Mar

Keywords

  • Critical current density (C)
  • High T superconductors (A)
  • Mechanical properties (C)
  • Multifilament tapes (A)
  • Stress effects (C)
  • Zr-reinforced Ag sheath

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Tensile strain/transverse compressive stress dependence of critical current in Bi(2212) superconducting tapes with Zr-reinforced Ag sheath'. Together they form a unique fingerprint.

Cite this