Stability of SrO-La2O3-Al2O3-SiO2 glass sealants in high-temperature air and steam

doi:10.1016/j.ceramint.2016.01.158

	Stability of SrO-La2O3-Al2O3-SiO2 glass sealants in high-temperature air and steam
	Wang, Xiuling 1,2; Ou, Ding Rong 1; Zhao, Zhe 1; Cheng, Mojie 1
刊名	CERAMICS INTERNATIONAL
	2016-05-01
卷号	42 期号:6 页码:7514-7523
关键词	Solid Oxide Fuel Cells/Solid Oxide Electrolysis Cells Glass Sealants Network Structure Glass Stability
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2016.01.158
文献子类	Article
英文摘要	SrO-La2O3-Al2O3-SiO2 glasses with different SrO content are prepared and their stability in high temperature air and steam are investigated. All glasses are stable during 1000 h test at 800 degrees C in air. Nevertheless, the high SrO glasses (>= 40 mol%) are devitrified on the surfaces when they are treated at 850-900 degrees C in air or exposed to steam. Si-29 magic angle spinning nuclear magnetic resonance study reveals weaker connections between [SiO4] tetrahedral units and increased micro heterogeneity of glass networks with increasing SrO content, which should be responsible to the lower stability of the high SrO glasses. It indicates that a careful control of SrO content is necessary to develop stable SrO La2O3-Al2O3-SiO2 glass sealants for solid oxide fuel cells and solid oxide electrolysis cells. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
WOS关键词	OXIDE FUEL-CELLS ; STRUCTURE-PROPERTY RELATIONSHIPS ; SI-29 MAS-NMR ; CERAMIC SEALANTS ; SILICATE-GLASSES ; PHYSICAL-PROPERTIES ; CRYSTALLIZATION KINETICS ; MECHANICAL STABILITY ; THERMAL-STABILITY ; NETWORK STRUCTURE
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000372676000118
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170664]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Cheng, Mojie
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiuling,Ou, Ding Rong,Zhao, Zhe,et al. Stability of SrO-La2O3-Al2O3-SiO2 glass sealants in high-temperature air and steam[J]. CERAMICS INTERNATIONAL,2016,42(6):7514-7523.
APA	Wang, Xiuling,Ou, Ding Rong,Zhao, Zhe,&Cheng, Mojie.(2016).Stability of SrO-La2O3-Al2O3-SiO2 glass sealants in high-temperature air and steam.CERAMICS INTERNATIONAL,42(6),7514-7523.
MLA	Wang, Xiuling,et al."Stability of SrO-La2O3-Al2O3-SiO2 glass sealants in high-temperature air and steam".CERAMICS INTERNATIONAL 42.6(2016):7514-7523.