Electrical properties of phases in the ZrO2-Y2O3-La2O3 system

被引：1

作者：

Zyrin, AV ^{[1
]}

Shevchenko, AV ^{[1
]}

Lopato, LM ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Mat Sci Problems, UA-252143 Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2000年 / 39卷 / 3-4期

关键词：

fuel elements; solid electrolytes; electrical conduction; ternary systems; fluorite; pyrochlore; nanocrystalline powders;

D O I：

10.1007/BF02678636

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An investigation was made of the electrical properties of phases with the cubic fluorite pyrochlor, and C-Y2O3 structures, and the tetragonal ZrO2 structure (T-ZrO2) in the ternary system ZrO2 - Y2O3 - La2O3 For comparison, the electrical conductivity of a number of specimens with the fluorite structure in the binary system ZrO2 - Y2O3 and with the pyrochlor structure in the ternary system HfO2 - Y2O3 - La2O3 was also studied. The specimens were prepared from nanocrystalline powders synthesized by the hydrolysis of zirconium salts in an acid medium at high temperatures. Conductivity was measured over the range 300-950 degrees C in air. It was shown that phases with the fluorite and T-ZrO2 structures in the investigated systems possess the highest electrical conductivities.

引用

页码：146 / 150

页数：5

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