Freeze casting of porous Ni-YSZ cermets

被引：35
|
作者：
Koh, Young-Hag [1 ]
Sun, Jong-Jae [1 ]
Kim, Hyoun-Ee [1 ]
机构：
[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea
来源：
MATERIALS LETTERS | 2007年 / 61卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
Ni-YSZ; cermets; porous; anode; fuel cells;
D O I：
10.1016/j.matlet.2006.07.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dual-phase porous Ni-YSZ cermets were fabricated via the freeze casting of a ceramic/camphene slurry. After removing the frozen camphene via sublimation at room temperature, the green samples were sintered for 3 h in air at various temperatures, ranging from 1100 to 1350 degrees C, and then reduced in an Ar-5% H-2 atmosphere at 700 degrees C for 3 h. The fabricated Ni-YSZ cermets showed 3-D pore channels formed by the replication of the entangled camphene dendrite network and small pores in the Ni-YSZ walls produced by partial sintering of the NiO-YSZ composite. Furthermore, the fabricated samples were found to possess reasonable electrical conductivities, thus rendering them suitable for use as the basic components of planar solid oxide fuel cells (SOFCs). (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1283 / 1287
页数：5
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