Size dependent grain-boundary conductivity in doped zirconia

被引：57

作者：

Guo, X ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2001年 / 20卷 / 02期

关键词：

zirconia; ionic conductivity; grain-boundary; space charge; oxygen vacancy; size effect; nanocrystalline material;

D O I：

10.1016/S0927-0256(00)00174-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxygen vacancy distributions at a grain boundary and resulting grain-boundary conductivities were calculated as a function of grain size, with an emphasis on nanocrystalline materials. The cause for the "intrinsic" grain-boundary blocking effect is analyzed, and the variation of the grain-boundary conductivity with grain size is discussed. Compared with literature experimental results, the calculation results are reasonable. Finally, the feasibility of Bauerle's equivalent electrical circuit for nanocrystalline materials is evaluated. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：168 / 176

页数：9

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