Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi2O5-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy

Young Soo Jung, Jung Hae Choi, Jong Heun Lee

Research output: Contribution to journalArticlepeer-review

Abstract

The grain-boundary resistivity of CaSi2O5-dropped 8 mol%-yttria-stabilized zirconia (8YSZ) was determined by impedance spectroscopy using sub-millimeter-scale electrodes. During sintering, a liquid that formed at the top surface of the specimen penetrated into the 8YSZ and induced enhanced grain growth near the surface region. The grain-boundary resistivity of the specimen surface was observed to be 150 times higher than that of the interior. The deterioration of the grain-boundary conductivity was explained in terms of the presence of an intergranular siliceous phase.

Original languageEnglish
Pages (from-to)219-222
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume108
Issue number3
DOIs
Publication statusPublished - 2004 May 15

Keywords

  • CaSiO-dropped 8YSZ
  • Distribution of siliceous grain-boundary phase
  • Grain-boundary resistivity
  • Impedance spectroscopy
  • Sintering

ASJC Scopus subject areas

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

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