Mossbauer and X-ray diffraction studies of cubic solid solutions of the ZrO2-Y2O3-Fe2O3 system

被引：12
|
作者：
Belous, A. G. [1 ]
Pashkova, E. V. [1 ]
Kravchyk, K. V. [1 ]
Ivanitskii, V. P. [2 ]
V'yunov, O. I. [1 ]
机构：
[1] VI Vernadskii Inst Gen & Inorgan Chem, UA-03680 Kiev 142, Ukraine
[2] Inst Geochem Mineral & Ore Format, UA-03680 Kiev 142, Ukraine
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 10期
关键词：
D O I：
10.1021/jp7102148
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 effect of iron oxide on the polymorphic composition and thin structure of cubic solid solutions of the (ZrO2)(0.9)(Y2O3)(0.1-x)(Fe2O3) system has been investigated. The maximum Fe2O3 solubility in the studied cut of the ternary system has been determined to be 2 mol %. Iron exists only as Fe3+ ions in octahedral coordination. Three nonequivalent positions of the Fe3+ ions, which differ in surrounding cations and anions, have been identified. It has been shown that Fe2O3 is not a stabilizer of the high-temperature modifications of ZrO2, but it promotes the stabilizing action (efficiency) of Y2O3 and structure stability in time due to the formation of the compound YFeO3 with structure isomorphic to c-ZrO2.
引用
收藏
页码：3914 / 3919
页数：6
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