Conductivity of Composites MeWO4-Al2O3 (Me = Ca, Sr)

被引：0
|
作者：
Guseva, A. F. [1 ]
Pestereva, N. N. [1 ]
Kuznetsov, D. K. [1 ]
Boyarshinova, A. A. [1 ]
Gardt, V. A. [1 ]
机构：
[1] Ural Fed Univ, Ekaterinburg 620002, Russia
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2023年 / 59卷 / 04期
关键词：
calcium tungstate; strontium tungstate; aluminum oxide; composite; heterogeneous doping; composite effect; TRANSPORT NUMBERS; METACOMPOSITES;
D O I：
10.1134/S1023193523040079
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Composites (1 - x)MeWO4-xAl(2)O(3) (Me = Ca, Sr) are synthesized by the solid-phase method. Their phase composition and thermodynamic stability are confirmed by the XRD and TG-DSC data, respectively. Their morphology is studied by the SEM-EDA method. The conductivity of composites is studied by the method of electrochemical impedance spectroscopy as a function of the temperature, the gas-phase oxygen pressure, and the content of added disperse Al2O3. It is shown that composites (1 - x)MeWO4-xAl(2)O(3) (Me = Ca, Sr) are ionic conductors and their conductivity is 4-12 times higher as compared with the corresponding tungstates.
引用
收藏
页码：284 / 290
页数：7
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