Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Electrical Conductivities of [(ZrO2)$_{1-x}$(CeO2)$_x$]$_{0.92}$(Y$_2$O$_3$)$_{0.08}$ Solid Solution

[(ZrO2)$_{1-x}$(CeO2)$_x$$_{0.92}$(Y$_2$O$_3$)$_{0.08}$ 고용체의 전기전도도

  • 이창호 (포항공과대학교 재료금속공학과) ;
  • 최경만 (포항공과대학교 재료금속공학과)
  • Published : 1998.12.01
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Abstract

The electrical conductivities of the yttria (8mol%) stabilizedzirconia-ceria solid solutions were measured as a function of oxygen partial between 80$0^{\circ}C$ and 100$0^{\circ}C$ using 4-probe d.c. method Under pure oxygen atmosphere the oxygen ionic conductivity of CeO2-ZrO2 decreased with the concentration of CeO2 Under reducing condition electronic conduction due to the redox equilibrium of Ce ion was observed. Total ionic and electronic conductivities fitted by a defect model enabled to determine the electronic transference number(tei) which increased with the concentration of CeO2 and with the degree of reduction.

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