Multifracture and strain effects on the critical current of Bi-2223 superconducting tapes

Zhaoyang Lu, Xuqiang Huang, Yanfa He, Jinghui Li, Jing Sun, Yinan Wang, Xihua Zong, Jinxing Wang, Liangyu Chen, Chengshan Li, Pingxiang Zhang, Yong Feng, Lian Zhou

Research output: Contribution to journalConference articlepeer-review

Abstract

The tensile stress vs strain curves σ() and the tensile strain effects on the critical current of Bi-2223/Ag tapes produced by the powder-in-tube method have been studied, at 77 K. Multifracture phenomena were observed on Bi-2223/Ag superconducting tapes. Simultaneous measurements of σ() curves and normalized critical current Icn vs tensile strain curves suggest that the oxide layers cracking cause directly the rapid critical current decreasing. The values of the strains that the first cracking starts are almost the same of the irreversible strain limit 0.9.

Original languageEnglish
Pages (from-to)150-153
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume386
DOIs
StatePublished - 15 Apr 2003
Externally publishedYes
EventICMC 2002 - Xi an, China
Duration: 16 Jun 200220 Jun 2002

Keywords

  • Bi-2223
  • Strain effects
  • Stress-strain

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