KINETIC DEMIXING OF CERAMICS IN AN ELECTRICAL-FIELD

被引：59

作者：

MONCEAU, D

FILAL, M

TEBTOUB, M

PETOT, C

PETOTERVAS, G

机构：

[1] CNRS-LPCM/UPR, 93430 Villetaneuse, 211, Avenue J.B. Clément

来源：

SOLID STATE IONICS | 1994年 / 73卷 / 3-4期

关键词：

CERAMICS; KINETIC DEMIXING;

D O I：

10.1016/0167-2738(94)90037-X

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 this work we have analyzed the conditions leading to a kinetic demixing of species in ceramics exposed to an electrical potential gradient. Mathematical expressions have been derived from the expression of the cationic fluxes. They have allowed us to relate the driving force of diffusion to the cation concentration profiles. Time dependent cation redistribution profiles have been estimated for (Co, Mg)O and (ZrO2, Y2O3) solid solutions. The computed data are compared to the experimental results.

引用

页码：221 / 225

页数：5

共 21 条

[1]

AKBAR SA, 1988, J AM CERAM SOC, V70, P246

[2] TRANSPORT NUMBERS IN STABILIZED ZIRCONIA [J].