Influence of grain sizes on the ionic conductivity and the chemical diffusion coefficient in copper selenide

被引：0
|
作者：
M. Kh. Balapanov
E. K. Urazaeva
I. B. Zinnurov
R. Sh. Musalimov
R. A. Yakshibaev
机构：
[1] Bashkir State University,
[2] Institute for Metals Superplasticity Problems of Russian Academy of Sciences,undefined
来源：
Ionics | 2006年 / 12卷
关键词：
Ionic conductivity; Diffusion; Grain boundary; Structural disorder; Chalcogenides;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ionic conductivity and chemical diffusion coefficient have been studied for superionic polycrystalline Cu1.75Se copper selenide within the temperature interval 300–500 K. An increase in ionic conductivity with an grain size increase is observed. In our opinion, this fact is caused by lower activation energy for the bulk diffusion than that for the grain boundary diffusion.
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页码：205 / 209
页数：4
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