Precursor scavenging of resistive grain-boundary phase in 8 mol % ytterbia-stabilized zirconia

Jong Heun Lee, Toshiyuki Mori, Ji Guang Li, Takayasu Ikegami, John Drennan, Doh Yeon Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The grain-boundary conduction of 8 mol % ytterbia-stabilized zirconia (8YbSZ) was improved markedly by precursor scavenging via the two-stage sintering process. The most significant increase in the grain-boundary conductivity was found when the sample, whose conductivity was higher than that via Al2O3-derived scavenging, was heat-treated at 1250°C for ≥ 20 h. The formation of a stable Si-containing phase such as ZrSiO4 during the first-stage heat-treatment was suggested as one probable scavenging route from the optimal heat-treatment temperature (HTT), long duration time (>20 h) at HTT, and the stability of the formed phase up to sintering temperatures (1500°C).

Original languageEnglish
Pages (from-to)J35-J40
JournalJournal of the Electrochemical Society
Issue number3
Publication statusPublished - 2002 Mar
Externally publishedYes

ASJC Scopus subject areas

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


Dive into the research topics of 'Precursor scavenging of resistive grain-boundary phase in 8 mol % ytterbia-stabilized zirconia'. Together they form a unique fingerprint.

Cite this