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

doi:10.1149/1.1604117

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 journal › Article › peer-review

19 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 language	English
Pages (from-to)	J49-J53
Journal	Journal of the Electrochemical Society
Volume	150
Issue number	10
DOIs	https://doi.org/10.1149/1.1604117
Publication status	Published - 2003 Oct
Externally published	Yes

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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10.1149/1.1604117

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AU - Kim, Doh Yeon

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AB - 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.

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

Abstract

ASJC Scopus subject areas

UN SDGs

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