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

页码：3914 / 3919

页数：6

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