Improvement of Grain-Boundary Conduction in 15 mol % Calcia-Stabilized Zirconia by Postsintering Heat-Treatment

Young Soo Jung, Jong Heun Lee, Je Hun Lee, Doh Yeon Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The grain-boundary conductivity of a 15 mol % calcia-stabilized zirconia specimen was increased about seven times by postsintering heat-treatment at 1300°C for 10 h. From the change in the crystallinity, morphology, and composition of the intergranular phase by heat-treatment, the de-wetting behavior of the intergranular phase due to crystallization was suggested to decrease the current constriction near the grain boundary. The postsintering heat-treatment was also effective at the high sintering temperature where adding A12O3 could not scavenge the resistive intergranular phase.

Original languageEnglish
Pages (from-to)J49-J53
JournalJournal of the Electrochemical Society
Volume150
Issue number10
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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