The elastic modulus of pure and doped ceria

被引：52

作者：

Wachtel, Ellen ^{[1
]}

Lubomirsky, Igor ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 02期

关键词：

Solid oxide fuel cells; Gd-doped ceria; Elastic properties; Chemistry of point defects; MECHANICAL-PROPERTIES; FRACTURE PROPERTIES; THERMAL-EXPANSION; POINT-DEFECTS; ELECTROLYTES; CONDUCTIVITY; SOLIDS;

D O I：

10.1016/j.scriptamat.2010.09.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Measurements of the elastic modulus of pure and doped ceria are summarized from the literature and analyzed with a view towards understanding the experimentally established dependence on temperature, doping level and oxygen vacancy concentration. At least two chemical properties affect the elastic modulus of pure and doped ceria: (i) the presence of vacancies decreases the strength of the chemical bonds; and (ii) low-temperature adaptation of the fluorite structure to the presence of oxygen vacancies is accompanied by an increase in unit cell volume. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：112 / 117

页数：6

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