Influence of Fe2O3 addition on the densification and oxygen ion conductivity of the GdSmZr2O7 ceramic

被引：3
作者：
Liu, Zhan-Guo [1 ,2 ,3 ]
Ouyang, Jia-Hu [1 ]
Ren, Zhe [1 ]
Sun, Ke-Ning [2 ]
Zhou, Yu [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Inst Adv Ceram, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Nat Sci Res Ctr, Harbin 150080, Peoples R China
[3] Univ Manchester, Sch Mat, Ctr Mat Sci, Manchester M13 9PL, Lancs, England
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Rare-earth zirconate; Sintering aid; Electrolyte; Electrical properties; OXIDE FUEL-CELLS; STABILIZED ZIRCONIA ELECTROLYTE; ELECTRICAL-CONDUCTIVITY; TRANSPORT-PROPERTIES; IT-SOFCS; SUBSTITUTION; LA2ZR2O7;
D O I：
10.1016/j.jeurceramsoc.2014.06.016
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：
The influence of Fe2O3 addition as a sintering aid on the microstructure and electrical properties of the GdSmZr2O7 ceramic has been studied. The GdSmZr2O7 ceramic with 1 wt.% Fe2O3 is composed of a pyrochlore-type phase and a small amount of Gd0.5Sm0 5FeO3. Fe2O3 is found to be an effective sintering aid for the GdSmZr2O7 ceramic, and a reduction in the sintering temperature of about 200 K is achieved. The total conductivity of the GdSmZr2O7 ceramic incorporated with or without 1 wt.% Fe2O3 obeys the Arrhenius relation. At 1173 K, the highest total conductivity of the GdSmZr2O7 ceramic with 1 wt.% Fe2O3 is about 20% higher than that of the GdSmZr2O7 ceramic. The GdSmZr2O7 ceramic with or without 1 wt.% Fe2O3 is an oxide-ion conductor in the oxygen partial pressure range of 1.0 x 10-4 to 1.0 atm at all test temperature levels. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3735 / 3740
页数：6
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