Study of the oxidation and reduction kinetics of copper iron oxide [CuFeO2] in the Cu-Fe-O system

被引：8

作者：

Zhao, TR ^{[1
]}

Takei, H ^{[1
]}

机构：

[1] OSAKA UNIV,FAC SCI,TOYONAKA,OSAKA 560,JAPAN

来源：

MATERIALS RESEARCH BULLETIN | 1997年 / 32卷 / 10期

关键词：

oxides; electron microscopy; X-ray diffraction; phase equilibria;

D O I：

10.1016/S0025-5408(97)00126-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of surrounding atmosphere on the phase relations of CuFeO2 during crystal growth was investigated under CO2, Ar, Ar + 0.5% O-2, Ar + 1% O-2, and Ar + 2% O-2, respectively, using scanning electron microscopy (SEM) together with electron probe microanalysis (EPMA) and X-ray powder diffraction (XPD). CuFeO2 was found to have partially decomposed into Cu2O and Fe2O3 before melting, and crystal growth was progressed by means of the traveling-Cu2O solvent. Under CO2 and Ar, Cu2O was found to be reduced to Cu. No reduction of Cu could be found under Ar + 0.5% O-2, Ar + 1% O-2, and Ar + 2% O-2 atmospheres, whereas the reduction of CuO was observed under an Ar + 2% O-2 atmosphere. Copyright (C) 1997 Elsevier Science Ltd.

引用

页码：1377 / 1393

页数：17

共 20 条

[1] OPTOELECTRONIC PROPERTIES OF PARA-TYPE AND NORMAL-TYPE DELAFOSSITE, CUFEO2 [J].