Stress/strain characteristics of PIT MgB2 tapes with nickel sheath - Effect of indium addition to the core

Kazumune Katagiri, Akifumi Iwamoto, Yoshitaka Shoji, Kyoji Tachikawa, Yutaka Yamada, Kazuo Watanabe, Toshiyuki Mito

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The electro-mechanical characteristics of the nickel sheathed powder-in-tube MgB2 mono-core tapes with 10 vol% indium powder were evaluated. No marked change in the stress-strain curve was found by indium addition. On the other hand, the irreversible strain for the tape where a drastic degradation of critical current Ic begins increased from 0.25% to 0.50% by the addition of indium. The indium addition also suppressed the slight increase in Ic with strain. These characteristics of Ic with strain were compared with those reported by other researchers. Scanning electron microscope observations of the longitudinal section of degraded samples revealed that the number of micro-cracks was appreciably smaller in the indium added tapes.

Original languageEnglish
Pages (from-to)95-98
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume397
Issue number3-4
DOIs
Publication statusPublished - 2003 Oct 15

Keywords

  • Critical current
  • Indium addition
  • Mechanical property
  • MgB tape

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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