Elastic properties of freeze-cast La0.6Sr0.4Co0.2Fe0.8O3-δ

被引：14
作者：
Zou, Ying [1 ]
Araki, Wakako [2 ]
Balaguer, Maria [1 ]
Malzbender, Juergen [1 ]
机构：
[1] Forschungszentrum Julich, IEK, D-52425 Julich, Germany
[2] Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 07期
关键词：
Elastic properties; LSCF; Ceramics; Porous; Freeze-cast; Ferroelastic; OXYGEN PERMEATION; MECHANICAL-PROPERTIES; LOADING CURVE; BA0.5SR0.5CO0.8FE0.2O3-DELTA; PEROVSKITES; SEPARATION; TRANSPORT; MEMBRANES; CERAMICS;
D O I：
10.1016/j.jeurceramsoc.2016.01.034
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：
Apparent Young's, shear and bulk moduli and Poisson's ratio of freeze-cast La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), envisaged as porous substrate for dense LSCF oxygen transport layers, were investigated at room temperature by a quasi static hysteresis compression test as a function of the longitudinal strain which was measured in longitudinal direction. Ferroelastic domains were confirmed via electron microscopy. The apparent elastic parameters showed extrema related to ferroelastic domain switching. Apparent Young's and shear moduli revealed minimum values, while bulk modulus and Poisson's ratio demonstrated maximum values due to the transverse strain contributed by ferroelastic domain switching. Results are discussed with respect to the behavior and values of the elastic parameters that has been reported previously for dense LSCF. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1651 / 1657
页数：7
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