A jelly-roll process for high temperature superconducting tapes and wires

Published

Journal Article (Review)

As an alternative to the powder-in-tube method, a new technique called the jelly-roll process is proposed for making high-T c superconducting tapes and wires. A normal-metal sheet coated with high-T c cuprate is configured in a jelly-roll fashion and cold worked into tapes or wires made of alternating cuprate superconductor and normal metal layers. The feasibility of this new process is demonstrated for both the YBa 2 Cu 3 O 7 Ag and Bi 2 Sr 2 CaCu 2 O 8 Ag composite systems. The role of reduction in the cross-sectional area by cold-rolling, heat treatment and oxygénation in optimizing T c and J c has been studied. Preliminary results indicate that partialmelt texturing, in the Bi 2 Sr 2 CaCu 2 O 8 Ag system, results in a relatively field independent J c (H ≲ 7T) with J c (H = 0) ~ 5 × 10 4 A cm -2 at 4.2 K. © 1992.

Full Text

Duke Authors

Cited Authors

  • Tsuei, CC; Chi, CC; Frey, T; Mitzi, DB; Kazyaka, T; Haugan, T; Ye, J; Patel, S; Shaw, DT; Wu, MK

Published Date

  • January 1, 1992

Published In

Volume / Issue

  • 32 / 1

Start / End Page

  • 95 - 98

International Standard Serial Number (ISSN)

  • 0254-0584

Digital Object Identifier (DOI)

  • 10.1016/0254-0584(92)90253-5

Citation Source

  • Scopus