High-Temperature Phase Transitions in ZrO2

被引：18

作者：

Gorelov, V. P. ^{[1
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst High Temp Electrochem, Ekaterinburg, Russia

来源：

PHYSICS OF THE SOLID STATE | 2019年 / 61卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

DEGREES-C; ZIRCONIA; SYSTEM; OXIDE; CERAMICS; EQUILIBRIA; DIAGRAMS; HAFNIUM; YTTRIA;

D O I：

10.1134/S1063783419070096

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An analysis of primary literature sources shows that there is only one reliable report on the observation of the cubic ZrO2 phase by the X-ray method under oxidizing conditions. This phase is observed at temperatures not lower than 2500 degrees C. All other reports on the observation of a phase transition around 2300 degrees C are reliable only in relation to the existence of a transition at this temperature, but this transition is to the t' tetragonal phase rather than to the cubic one. The conclusion is that the following four polymorphic modifications are present in ZrO2 under the standard pressure: monoclinic (m), two tetragonal (t and t'), and cubic (c) phases that are converted into each other with an increase in the temperature.

引用

页码：1288 / 1293

页数：6

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