Mechanical and electrical characteristics of a reinforced Bi2Sr2CaCu2O8 tape coil in large hoop stress

Kazuo Watanabe, Satoshi Awaji, M. Okada, M. Motokawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We fabricated a strengthened silver-sheathed multifilamentary Bi2Sr2CaCu2O8 tape coil with parallel co-winding Ag-0.5wt%Mg tape between turns and an additional Cu-50wt%Ag tape on the outer coil surface. The reinforced double-pancake coil with a wide bore 280 mm in diameter was investigated in a large hoop stress state up to 240 MPa at an external magnetic field of 10 T and 4.2 K. It is found that good transport properties without degradation for the test coil are revealed under a successfully reduced strain of less than 0.2% at 240 MPa. Moreover, it is pointed out that thermal stability for the silver-sheathed Bi2Sr2CaCu2O8 tape is closely related to the current sharing characteristics as a result of cryogenic stabilization with heat transfer from the metal surface to liquid helium.

Original languageEnglish
Pages (from-to)986-988
Number of pages3
JournalSuperconductor Science and Technology
Volume11
Issue number10
DOIs
Publication statusPublished - 1998 Oct 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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