Microstructure of the ceramic in superconducting Bi-2223 composite tapes after bending strain cycles

Markku Lahtinen, Jaakko Paasi, Zhenghe Han, Jyrki Sarkaniemi

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

Studying the microstructure of the ceramic in superconducting Bi-2223 based composite tapes after bending strain cycles, it was found that in Ag-sheathed tapes with a well-textured ceramic crack propagation took place preferentially in the tape plane, whereas in tapes with less texture the cracks were oriented perpendicular to the filament. A possible explanation for the unexpected crack propagation in the tape plane is given in terms of anisotropy in the elastic properties of the Bi-2223 ceramic.

Original languageEnglish
Pages (from-to)238-242
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume277
Issue number3-4
DOIs
Publication statusPublished - 10 Apr 1997
MoE publication typeA1 Journal article-refereed

Keywords

  • Bending strain
  • Bi-2223 composite superconductor
  • Fracture

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