CHEMICAL DIFFUSION-COEFFICIENT OF COO

被引：5
|
作者：
TADUY, T
MILLOT, F
DHALENNE, G
机构：
[1] Laboratoire des Composés non Stoechiométriques, URA 446 - Université Paris-Sud, 91405 Orsay Cédex
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1992年 / 53卷 / 02期
关键词：
COBALT OXIDE; NONSTOICHIOMETRY; DIFFUSION;
D O I：
10.1016/0022-3697(92)90063-J
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The chemical diffusion coefficients D approximately and the thermodynamic factors (partial-derivative ln P(O2)/partial-derivative-delta) of Co1-delta-O have been measured with an electrochemical set-up at 1108-degrees-C between 10(-3) and 1 atm oxygen pressures. Our results confirm previous data of D approximately obtained with thermogravimetry. Comparison with available cobalt self-diffusion coefficients D(Co)* supports a simple vacancy migration mechanism for cobalt diffusion.
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页码：323 / 327
页数：5
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