Transport Properties of La2(WO4)3–Al2O3 Composites

IF 1.1 4区 工程技术 Q4 ELECTROCHEMISTRY
N. N. Pestereva, A. F. Guseva, N. A. Vasilenko, I. V. Beketov, N. V. Selezneva
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引用次数: 0

Abstract

(1 – φ)La2(WO4)3–φAl2O3 composites are obtained by the solid-phase method (φ is the volume fraction of nanodispersed alumina) and their thermal properties, morphology, and electrical conductivity are studied depending on temperature, pressure of oxygen in the gas phase, and composition. It is found that the conductivity of the composites (1 – φ)La2(WO4)3–φAl2O3 passes through a maximum at φ ~ 0.1 and reaches a value of 7 × 10–3 S/cm at 1000°C, which is seven times higher than the conductivity of La2(WO4)3 at the given temperature. Using the EMF method and measuring the dependence of electrical conductivity on oxygen pressure in the gas phase, the ionic nature of the conductivity of the (1 – φ)La2(WO4)3–φAl2O3 composites is established.

Abstract Image

La2(WO4)3-Al2O3 复合材料的传输特性
摘要 通过固相法(φ为纳米分散氧化铝的体积分数)获得了(1 - φ)La2(WO4)3-φAl2O3 复合材料,并研究了其热性能、形貌和导电性随温度、气相中氧的压力和组成的变化。研究发现,复合材料 (1 - φ)La2(WO4)3-φAl2O3 的电导率在 φ ~ 0.1 时达到最大值,在 1000°C 时达到 7 × 10-3 S/cm,是 La2(WO4)3 在给定温度下电导率的七倍。利用电磁场法和测量电导率与气相中氧气压力的关系,确定了 (1 - φ)La2(WO4)3-φAl2O3 复合材料电导率的离子性质。
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来源期刊
Russian Journal of Electrochemistry
Russian Journal of Electrochemistry 工程技术-电化学
CiteScore
1.90
自引率
8.30%
发文量
102
审稿时长
6 months
期刊介绍: Russian Journal of Electrochemistry is a journal that covers all aspects of research in modern electrochemistry. The journal welcomes submissions in English or Russian regardless of country and nationality of authors.
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