NONSTOICHIOMETRY IN PURE AND ZR-DOPED YTTRIA CERAMICS - AN EXAFS AND XPS STUDY

被引：21

作者：

DURAUD, JP ^{[1
]}

JOLLET, F ^{[1
]}

THROMAT, N ^{[1
]}

GAUTIER, M ^{[1
]}

MAIRE, P ^{[1
]}

LEGRESSUS, C ^{[1
]}

DARTYGE, E ^{[1
]}

机构：

[1] LAB UTILISAT RAYONNEMENT ELECTROMAGNET,F-91400 ORSAY,FRANCE

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 08期

关键词：

doping; nonstoichiometry; X‐ray; yttria; zirconium;

D O I：

10.1111/j.1151-2916.1990.tb07614.x

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：

Nonstoichiometry is exhibited by many ceramics at very high temperatures. The high‐temperature treatment of yttria, in particular, can induce a large concentration of point defects that changes the electrical and mechanical behavior of the solid. In the present study, the electronic and geometric structures of nonstoichiometric pure and Zr‐doped yttria are examined by X‐ray photoelectron spectroscopy and X‐ray absorption. The results show that the doping atom influences the level of stoichiometry, as well as the induced disorder and the change in the partial ionic character of the Y‐O bond. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：2467 / 2473

页数：7

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