The effects of excess CuO on the grain growth kinetics, sintering and microstructure of the YBa2Cu3O7_δ superconductor

M. W. Shin, A. I. Kingon, T. M. Hare, C. C. Koch

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8 Citations (Scopus)

Abstract

The influence of CuO on the grain growth kinetics, densification and microstructure of YBa2Cu3O7-δ was studied. The YBa2Cu3O7-δ material with sufficient liquid phase revealed a grain growth exponent of about 0.25 after isothermal annealing at 990°C. The addition of CuO greatly enhanced the densification during sintering through the presence of the liquid phase. A microstructure containing highly aligned grains (d > 200 μm) was produced by a compositional gradient of CuO powder.

Original languageEnglish
Pages (from-to)13-18
Number of pages6
JournalMaterials Letters
Volume15
Issue number1-2
DOIs
Publication statusPublished - 1992 Oct

Bibliographical note

Funding Information:
The authorsw ouldlike to thankD r. David Haase for valuabled iscussionsT. his work was supported by a grantf rom the Ofice of BasicE nergyS cience, Departmenot f Energy,u nderG rant No. DE-FGOS-88ER45359F. urtherf inancials upportw asr eceived through the subcontractN o. 87X-SG688V from Martin MariettaE nergyS ystemsD, epartmenot f Energy,O RNL, HTSC Pilot Center.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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