Preparation of yttria-stabilized zirconia (YSZ) films on La0.85Sr0.15MnO3 (LSM) and LSM-YSZ substrates using an electrophoretic deposition (EPD) process

被引:120
作者
Chen, FL [1 ]
Liu, ML [1 ]
机构
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
基金
美国国家科学基金会;
关键词
electrophoretic deposition; films; fuel cells; (La; Sr)MnO3; ZrO2;
D O I
10.1016/S0955-2219(00)00195-3
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
Preparation of high-quality yttria-stabilized zirconia (YSZ) electrolyte films on porous substrates is critical to the fabrication of high-performance solid-state ionic devices such as fuel cells and gas sensors. An electrophoretic deposition (EPD) process is investigated for the preparation of YSZ electrolyte films on both porous La0.85Sr0.15MnO3 (LSM) and porous LSM-YSZ composite substrates. The Pechini process is used for the preparation of fine LSM powders with an average particle size of about 0.1 mum. The processing parameters critically influencing the microstructures of green YSZ films are identified and optimized to obtain uniform, crack-free green YSZ films with high packing density of fine YSZ particles. Dense YSZ films with a thickness of about 10 mum have been successfully fabricated on both porous LSM and porous LSM-YSZ substrates when sintered at 1250 degreesC for 2 h. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:127 / 134
页数:8
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