| Electrical conductivity of mixed conductors (YO1.5)(x)-(CeO2)(y)-(ZrO2)(1-x-y) | |
| Zhou Xiangyong ; Fan Zeng ; Tang Zilong ; Zhang Zhongtai | |
| 2010-05-10 ; 2010-05-10 ; OCT 23-26, 2005 | |
| 会议名称 | High-Performance Ceramics IV, Pts 1-3 ; 4th China International Conference on High-Performance Ceramics (CICC-4) ; Chengdu, PEOPLES R CHINA ; Web of Science |
| 关键词 | electrical conductivity mixed conductivity zirconia ceria yttria SOLID ELECTROLYTES CELLS Materials Science, Ceramics Materials Science, Composites |
| 中文摘要 | The Y2O3-ZrO2 binary system ceramic is considered to be most developed in application to the ZrO2-based materials. A cubic fluorite structure is generally achieved, as the metal ion of the additive (Y) takes place of the Zr4+ and oxygen ion vacancies are produced in the lattice to maintain the charge balance. This leads to almost totally ionic conductivity. The introduction of changeable valued CeO2 can further improve the total electronic conductivity through the defect equilibrium reaction between tetravalent Ce4+ and trivalent Ce3+ at high temperature and reducing atmosphere. In this study, solid phase synthesis method was employed for the preparation of (YO1.5)(x)-(CeO2)(0.08)-(ZrO2)(0.9-x) and (YO1.5)(0.05)-(CeO2)(y)-(ZrO2)(0.95-y) ceramics, while four probe DC conductivity measurement method was also applied under the temperature between 300 to 800 degrees C. The results prove that the concentration of Y3+ is the main contribution of the electrical conductivity at low temperature. |
| 会议录出版者 | TRANS TECH PUBLICATIONS LTD ; STAFA-ZURICH ; LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND |
| 语种 | 英语 ; 英语 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/18263]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Zhou Xiangyong,Fan Zeng,Tang Zilong,et al. Electrical conductivity of mixed conductors (YO1.5)(x)-(CeO2)(y)-(ZrO2)(1-x-y)[C]. 见:High-Performance Ceramics IV, Pts 1-3, 4th China International Conference on High-Performance Ceramics (CICC-4), Chengdu, PEOPLES R CHINA, Web of Science. |
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