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Effect of Molybdenum Doping on Oxygen Permeation Properties and Chemical Stability of SrCo0.8Fe0.2O3-δ
Chun-lin Song*,Shu-min Fang*
Author NameAffiliationE-mail
Chun-lin Song* Faculty of Materials and Energy, Southwest University, Chongqing 400715, China chunlinsong@swu.edu.cn 
Shu-min Fang* Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA shuming@cec.sc.edu 
Abstract:
The phase composition, microstructure, thermal expansion coefficients, oxygen permeation properties and chemical stability of SrCo0.7Fe0.2Mo0.1O3-δ (SCFM) were investigated and compared with those of SrCo0.8Fe0.2O3-δ (SCF). Single phase SCFM was successfully pre-pared by a combined EDTA-citric method. SCFM shows a lower thermal expansion coefficient (24×10-6~29×10-6/K) than SCF between 500 and 1050 oC, indicating a more stable structure. SCFM shows a high oxygen permeation flux, although the oxygen flux of SCFM decreases slightly because of Mo dopant. Furthermore, it was demonstrated that the doping of Mo in SCF can prevent the order-disorder transition and improves the chemical stability to CO2.
Key words:  Oxygen permeation, SrCo0.8Fe0.2O3-δ, Chemical stability, Molybdenum
FundProject:
钼掺杂对SrCo0.8Fe0.2O3-δ的氧渗透性能和化学稳定性的影响
宋春林*,方曙民*
摘要:
研究了SrCo0.7Fe0.2Mo0.1O3-δ(SCFM)材料的相组成、微观结构、热膨胀系数、氧渗透性能和化学稳定性, 其结果和文献中的SrCo0.8Fe0.2O3-δ(SCF)做了对比.通过EDTA-citric混合方法成功获得了纯相SCFM材料.SCFM材料在500~1050 oC显示出比SCF材料更低的热膨胀系数(24×10-6
关键词:  氧渗透,SrCo0.8Fe0.2O3-δ,化学稳定性,钼
DOI:10.1063/1674-0068/27/04/445-449
分类号: