Sintering of bulk high-Tc superconductors: Bi-Sr-Ca-Cu-O

K. C. Goretta, Michael T. Lanagan, D. Y. Kaufman, A. C. Biondo, C. T. Wu, M. E. Loomans, M. R. Cheesman, R. B. Poeppel, A. S. Nash

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bi2Sr2CaCu2Ox (2212) and (Bi,Pb)2Sr2Ca2Cu3Ox (2223) superconductors have orthorhombic crystal structures. They form platelike grains that at high temperatures grow primarily in the a-b planes and not in the c direction. The diffusional properties of Bi-Sr-Ca-Cu-O superconductors are so anisotropic that 2212 and 2223 cannot, in general, be densified by solid-state sintering. Densification can be improved by application of pressure or by use of transient liquid phases. Most of the useful bulk Bi-Sr-Ca-Cu-O superconductors are composites that contain metallic Ag, generally as a sheath or substrate. The Ag lowers the melting points of the superconductors, which has significant effects on microstructural development. The results of disparate sintering studies are presented and discussed.

Original languageEnglish (US)
Title of host publicationProperties of Emerging P/M Materials
PublisherPubl by Metal Powder Industries Federation
Pages261-269
Number of pages9
ISBN (Print)187895427X
StatePublished - Dec 1 1992
EventProceedings of the 1992 Powder Metallurgy World Congress. Part 1 (of 9) - San Francisco, CA, USA
Duration: Jun 21 1992Jun 26 1992

Publication series

NameAdvances in Powder Metallurgy
Volume8
ISSN (Print)1042-8860

Other

OtherProceedings of the 1992 Powder Metallurgy World Congress. Part 1 (of 9)
CitySan Francisco, CA, USA
Period6/21/926/26/92

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Metals and Alloys

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