Liquidus surface in the HfO2-Y2O3-La2O3 system

被引：0
|
作者：
E. R. Andrievskaya
V. V. Kovylyaev
L. M. Lopato
A. V. Ragulya
A. V. Shevchenko
机构：
[1] National Academy of Sciences of Ukraine,Frantsevich Institute of Materials Science Problems
来源：
Inorganic Materials | 2000年 / 36卷
关键词：
Ternary System; Liquidus Surface; Light Area; Pyrochlore Phase; Primary Crystal;
D O I：
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中图分类号：
学科分类号：
摘要：
The liquidus surface in the HfO2-Y2O3-La2O3 system was studied by differential thermal analysis in helium at temperatures of up to 2500°C, derivative thermal analysis in air at temperatures of up to 3000°C, x-ray diffraction, optical microscopy, and electron microscopy. The liquidus surface was found to comprise five primary crystallization fields-those of theH-Y2O3-,C-Y2O3-,F-HfO2-, andX-La2O3-based solid solutions and the pyrochlore phase La2Hf2O7. Three invariant equilibria were identified in the system studied-two peritectics and one eutectic.
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页码：612 / 619
页数：7
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