Interfacial resistance between ceramic superconductor and silver

Ronald Birkhahn, Nicole Browning, Art Youngdahl, Michael Lanagan, Roger Poeppel

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

New applications in ceramic superconductor technology require long superconducting bars that carry large currents. Electrical contacts to the bars can be made by sintering silver to the ceramic. Contact resistance arises from the silver and the interfacial zone. A large resistance coupled with high currents could result in power losses that would reduce the benefits of the superconductor. To determine the resistance between the silver and ceramic, 0.5 cm2 lap-joint connections were subjected to four-point electrical tests with pulsed currents greater than 100 A. Results show that the interfacial resistivity between the silver and ceramic at liquid nitrogen temperature was less than 10-7 Ωcm2.

Original languageEnglish (US)
Pages (from-to)67-69
Number of pages3
JournalApplied Superconductivity
Volume2
Issue number1
DOIs
StatePublished - Jan 1994

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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