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

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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
JournalJournal of the Electrochemical Society
Volume150
Issue number10
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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