Effect of potassium substituted for A-site of SrCe0.95Y0.05O3 on microstructure, conductivity and chemical stability

NCU Institutional Repository > 工學院 > 機械工程學系 > 期刊論文 > Item 987654321/108696

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/108696

题名:	Effect of potassium substituted for A-site of SrCe0.95Y0.05O3 on microstructure, conductivity and chemical stability
作者:	李雄;Liu, Chi;Huang, Jian-Jia;Fu, Yen-Pei;Li, Chuan;Wang, Jian-Yih;Lee, Shyong
贡献者:	工學院機械工程學系
关键词:	Atmospheres;Carbon dioxide;Ceramics;Conductivity;Corrosion resistance;Defects;Electrical properties;Microstructure;Potassium;Resistivity;Sintering;X-ray diffraction
日期:	2015-01-01
上传时间:	2026-04-23 15:02:22 (UTC+8)
出版者:	Elsevier Ltd.;Elsevier Ltd
摘要:	摘要： The chemical stability of potassium substituted for A-site of SrCe0.95Y0.05O3 specimens was examined under CO2 atmosphere treated at 600°C and further analyzed by X-ray diffractometer to see their CO2-resisted capabilities. According to thermodynamic data, the Gibbs free energy of CeO2 was lower than that of SrCO3 at the temperature of 600°C. Thus the formation of CeO2 might be faster than that of SrCO3 in SrCeO3− based materials under CO2 atmosphere. Unfortunately, the chemical stability of SrCe0.95Y0.05O3 materials in CO2 atmosphere was reduced with increasing potassium-substituted amount. The microstructures of Sr1−xKxCe0.95Y0.05O3 sintered specimens were identified using field emission scanning electron microscope. The conductivity in moisture H2 atmosphere (RH 30%) was increased with increasing potassium-substituted concentration. The conductivity reached a maximum of 0.0081 Scm-1 at 900°C for Sr0.95K0.05Ce0.95Y0.05O3 sintered specimens in moisture H2 atmosphere (RH 30%). Potassium substituted for A-site of SrCe0.95Y0.05O3 could improve the conductivity but not CO2-resisted capability. 出版者： Elsevier Ltd 出版日期： 2015-03-01 出處： Ceramics international, 2015-03, Vol.41 (2), p.2948-2954 版權： 2014 Elsevier Ltd and Techna Group S.r.l. 識別號： ISSN: 0272-8842 識別號： EISSN: 1873-3956 識別號： DOI: 10.1016/j.ceramint.2014.10.126
显示于类别:	[機械工程學系] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	27	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....