EQUILIBRIUM STUDIES OF THE SYSTEM (FE,CO)O-(FE,CO)3O4 BY SOLID-STATE EMF-MEASUREMENTS IN THE TEMPERATURE-RANGE 970-K TO 1370-K

被引：7

作者：

LUNDBERG, M

ROSEN, E

机构：

[1] Department of Inorganic Chemistry, University of Umeå, Umeå

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 06期

关键词：

COBALT OXIDE; IRON OXIDES; SOLID SOLUTIONS; PHASE EQUILIBRIA; ELECTROMOTIVE FORCE;

D O I：

10.1111/j.1151-2916.1992.tb04209.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The equilibrium reaction 3'(Fe, Co)O'(ss) +1/2O2(g) reversible (Fe,Co)3O4(ss) was studied in the temperature range 970 to 1370 K for seven different total compositions of molar ratios 0.5 < Fe/(Fe + Co) less-than-or-equal-to 1.0. The equilibrium pressures of oxygen were determined by using galvanic cells incorporating calcia stabilized zirconia as solid electrolyte and the Fe/Co ratios in the solid-solution phases by wavelength dispersive spectrometry microprobe analyses. The activities of 'FeO' in the cobaltowustite phase were then derived from the experimental results obtained.

引用

页码：1452 / 1457

页数：6

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[2]

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[3]

DEGUIRE MR, 1990, J AM CERAM SOC, V73, P3002, DOI 10.1111/j.1151-2916.1990.tb06707.x

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