Influence of sintering additives of transition metals on the properties of gadolinium-doped barium cerate

摘要：

In the present work the effect of MOx (where M=Cu, Ni, Zn, Fe, Co, Ti) addition on the densification behavior and electrical conductivity of BaCe0.9Gd0.1O3-δ ceramics is investigated. It was found that the small addition of these sintering additives (1 mol% in the B position) reduces both calcination and sintering temperature by ～250℃ and ～150℃, respectively, promoting simultaneously the densification process. The relative density of the doped samples is ～95% in the case of Cu, Ni and Co, ～91% in the case of Zn, Ti and Fe, while in the case of BaCe0.9Gd0.1O3-δ it corresponds to ～86%. The electrical conductivity of the BaCe0.89Gd0.1M0.01O3-δ samples sintered at 1450℃ is comparable to the one of BaCe0.9Gd0.1O3-δ, sintered at 1600 ℃, both in oxidizing and reducing atmospheres. Among them, the Cu-and Zn-containing samples attain significantly higher values of conductivity.

关键词： Sintering additives Gadolinium doped barium cerates

作者: E.Gorbova V.Maragou D.Medvedev A.Demin P.Tsiakaras

作者单位: Institute of High Temperature Electrochemistry, 22 S.Kovalevskoy, 620219 Yekaterinburg, Russia School of Engineering, Dept.of Mechanical Engineering, University of Thessaly, Pedion Areos, 383 34

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 887-890

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）