Effects of Y-doping on the formation, structure and properties of iron oxide

被引：4
|
作者：
Zhou, M
Luo, HM
机构：
[1] UNIV SCI & TECHNOL CHINA, DEPT APPL CHEM, HEFEI 230026, ANHUI, PEOPLES R CHINA
[2] YANTAI ANIM & PLANT QUARANTINE BUR, YANTAI 264000, SHANDONG, PEOPLES R CHINA
[3] UNIV SCI & TECHNOL CHINA, DEPT APPL CHEM, HEFEI 230026, ANHUI, PEOPLES R CHINA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 255卷 / 1-2期
关键词：
Y-doped; gamma-Fe2O3; cubic; tetragonal;
D O I：
10.1016/S0925-8388(96)02837-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：
The effects of Y-doping on the phase formation in an FeSO4-Na2CO3 suspension system were determined. The phase, microstructure and thermal stability of the samples were studied by XRD, TEM and TG-DTA. It was found that Y appears to restrain the nucleation and growth of alpha-FeOOH, but facilitates the formation of gamma-FeOOH. Partly doe to Y-doping, tetragonal gamma-Fe2O3 from direct dehydration of gamma-FeOOH has high thermal stability, and the phase transition temperature of gamma-Fe2O3 --> a.Fe2O3 is increased to 725 degrees C. The properties of cubic gamma-Fe2O3 obtained from Y-doped alpha-FeOOH were also investigated.
引用
收藏
页码：239 / 242
页数：4
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