Changes in Aging Behavior and Defect Structure of Yttria-Fully-Stabilized ZrO2 with Sc2O3 Doping |
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| Authors: | Junya Kondoh Yoichi Tomii Katsuhiro Kawachi |
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| Affiliation: | Department of Mechanical and Systems Engineering, Faculty of Engineering, Gifu University, Gifu 501-1193, Japan;Department of Mechanical and Systems Engineering, Faculty of Engineering, Gifu University, Gifu 501-1193, Japan;Technical Research and Development Division, Daiichi Kigenso Kagaku Kogyo Company, Ltd., Osaka 559-0025, Japan |
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| Abstract: | Methods of suppressing decreased conductivity in 8 mol% Y2O3-stabilized–92 mol% ZrO2 (8YSZ) with aging were investigated. Different amounts of Sc2O3 were doped into 8YSZ. The electrochemical properties of Sc2O3-doped 8YSZ were measured, and the microstructural and local structural changes were characterized. The present results indicate that an appropriate amount of Sc2O3 doping, 3 or 4 mol%, effectively suppresses decreased conductivity with aging in 8YSZ. |
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| Keywords: | aging defects zirconia: yttria-stabilized |
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