硅酸盐学报Issue(4)：534-538,5.DOI:10.7521/j.issn.0454-5648.2014.04.18
La0.6Sr0.4Co0.2Fe0.8O3-δ--Gd0.1Ce0.9O1.95复相材料的性能
Performance of La0.6 Sr0.4 Co0.2 Fe0.8 O3-δ--Gd0.1 Ce0.9 O1.95 Dual Phase Material
摘要
Abstract
In the practical applications,the dense microstructure and high conductivity become a necessity for an oxygen trans-port membrane.Dual phase material of La0.6 Sr0.4 Co0.2 Fe0.8 O3-δ-Gd0.1 Ce0.9 O1.95 (LSCF-GDC)was fabricated via dry-pressing. The effect of LSCF concentration on the properties of electrical conductivity and microstructure of dual-phase membrane was in-vestigated.The results show that the conductivity of dual phase material increases with increasing the LSCF mass ratio.When the mass ratio between LSFC and GDC phases is 65∶35,the conductivity is 141.7 S/cm.From the microstructure observed by scanning electron microscopy (SEM),the grain boundary appears on the membrane surface.The grain growth of GDC is af-fected by the continuity of LSCF.When LSCF-GDC(65∶35)is sintered at 1 350 ℃ for 5 h,the grain size of GDC is 0.3-0.6μm.It is indicated that the dual phase material of LSCF-GDC could be a promising oxygen transport membrane material due to its superior microstructure and high electrical performance.关键词
双相材料/透氧膜/微观结构Key words
dual phase materials/oxygen transport membrane/microstructure分类
化学化工引用本文复制引用
杨志宾,朱腾龙,常杰善,赵永勤,韩敏芳..La0.6Sr0.4Co0.2Fe0.8O3-δ--Gd0.1Ce0.9O1.95复相材料的性能[J].硅酸盐学报,2014,(4):534-538,5.基金项目
国家“973”计划(2012CB215404)资助项目 （2012CB215404）
中美(NSFC-NSF)材料领域合作研究资助项目(51261120378)。 （NSFC-NSF）
