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

被引：51

作者：

Gorbova, E. ^{[2
]}

Maragou, V. ^{[1
]}

Medvedev, D. ^{[2
]}

Demin, A. ^{[2
]}

Tsiakaras, P. ^{[1
]}

机构：

[1] Univ Thessaly, Dept Mech Engn, Sch Engn, Volos 38334, Volos, Greece

[2] Inst High Temp Electrochem, Ekaterinburg 620219, Russia

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 21-26期

关键词：

sintering additives; gadolinium doped barium cerates;

D O I：

10.1016/j.ssi.2008.02.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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 BaCe(0.9)d(0.1)O(3-delta) 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 similar to 250 degrees C and similar to 150 degrees C, respectively, promoting simultaneously the densification process. The relative density of the doped samples is similar to 95% in the case of Cu, Ni and Co, similar to 91% in the case of Zn, Ti and Fe, while in the case of BaCe0.9Gd0.1O3-delta it corresponds to similar to 86%. The electrical conductivity of the BaCe0.89Gd0.1M0.01O3-delta samples sintered at 1450 degrees C is comparable to the one of BaCe0.9Gd0.1O3-delta, sintered at 1600 degrees C, both in oxidizing and reducing atmospheres. Among them, the Cu- and Zn-containing samples attain significantly higher values of conductivity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：887 / 890

页数：4

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