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Effect of specific surface area on growth and porosity of oxide superconducting ceramic YBCO single domain

  • C. P. Zhang
  • , X. Chaud
  • , H. T. Cao
  • , E. Beaugnon
  • , L. Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The effect of specific surface area on the growth and the porosity of oxide ceramic superconductor YBCO single domain are investigated. The enhancement of growth depth depends on the large specific surface area σ. When the specific surface area σ is more than the critical value 200mm 2/g, the YBCO single domain is full-growth in the sample of size Φ20mm×18mm. It reveals that a large specific surface area providing an effective tunnel of oxygen diffusion for the crystal growth. On the other hand, this tunnel makes oxygen gas emitting out resulting in porosity diameter decreased. The mean porosity diameter is observed as 5μm in hole sample smaller than 80μm in plain sample. The porosity distribution is calculated as 1/(100μm)2 in plain sample and 8/(10μm)2 in hole sample.

Original languageEnglish
Title of host publicationHigh-Performance Ceramics VI
PublisherTrans Tech Publications Ltd
Pages346-349
Number of pages4
ISBN (Print)0878492747, 9780878492749
DOIs
StatePublished - 2010
Event6th China International Conference on High-Performance Ceramics, CICC-6 - Harbin, China
Duration: 16 Aug 200919 Aug 2009

Publication series

NameKey Engineering Materials
Volume434-435
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference6th China International Conference on High-Performance Ceramics, CICC-6
Country/TerritoryChina
CityHarbin
Period16/08/0919/08/09

Keywords

  • Growth
  • Porosity
  • Specific surface area
  • Superconductor YBCO

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