Investigation of High Temperature Elastic Modulus and Internal Friction of SOFC Electrolytes Using Resonance Method

被引：10

作者：

Kushi, T. ^{[1
]}

Sato, K. ^{[2
]}

Unemoto, A. ^{[3
]}

Amezawa, K. ^{[1
]}

Kawada, T. ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, 6-6-01 Aoba, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808579, Japan

[3] Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

SOLID OXIDE FUEL CELLS 11 (SOFC-XI) | 2009年 / 25卷 / 02期

关键词：

OXIDE FUEL-CELLS;

D O I：

10.1149/1.3205705

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The Young's modulus, the shear modulus, the Poisson ratio and the internal friction of typical electrolyte materials for SOFC, (Gd2O3)(0.05)(CeO2)(0.9), (Sm2O3)(0.05)(CeO2)(0.9), (Y2O3)(0.08)(ZrO2)(0.92), (Y2O3)(0.1)(ZrO2)(0.9), (Sc2O3)(0.1)(ZrO2)(0.9), (Sc2O3)(0.9)Ce-0.01(ZrO2)(0.89) were evaluated by a resonance method. The measurements were carried out from room temperature to 1273 K in flowing pure Ar. The Young's modulus of (Gd2O3)(0.05)(CeO2)(0.9) and (Sm2O3)(0.05)(CeO2)(0.9) gradually decreased with increasing temperature as expected for the typical ceramics. However, the Young's modulus of the series of zirconia drastically decreased in the temperature range between 573 K and 873 K, and correspondingly the internal friction increased. Such a characteristic temperature dependence of the mechanical properties was discussed in terms of phase change.

引用

页码：1673 / 1677

页数：5

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