Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures

doi:10.1016/j.jeurceramsoc.2019.05.036

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	Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures
	Tian, Zhilin 2,3; Ren, Xiaomin 1,2; Lei, Yiming 1,2; Zheng, Liya 2; Geng, Wanrong 1,2; Zhang, Jie 2; Wang, Jingyan 2
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2019-11-01
卷号	39 期号:14 页码:4245-4254
关键词	Rare earth silicates Corrosion Calcium-magnesium-alumino-silicate Environmental barrier coating materials
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2019.05.036
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyan(jywang@imr.ac.cn)
英文摘要	With the increased demand for high operating temperature of gas turbine engines, corrosion by molten calcium-magnesium-alumino-silicate (CMAS) exhibits a significant challenge to the development of durable environmental barrier coatings (EBCs). EBC candidates, gamma-Y2Si2O7, beta-Yb2Si2O7, and beta-Lu2Si2O7 were explored on their corrosion resistance to CMAS melts at 1300 degrees C and 1500 degrees C for 50 h. Interaction and degradation mechanisms were investigated and the corrosion behaviors showed different trends at high temperatures. At 1300 degrees C, RE2Si2O7 dissolves into CMAS melts and apatite phases reprecipitate forming a thick recession layer. However, when the temperature increases to 1500 degrees C, CMAS melts vigorously penetrate through the grain boundary of RE2Si2O7 and 'blister' cracks form throughout the samples. The reduced grain boundary stability at 1500 degrees C promotes the penetration of CMAS melts in RE2Si2O7. Grain boundary engineering is critically demanded to optimize CMAS corrosion at high temperatures.
资助项目	National Key R&D Program of China[201711E130703201] ; National Natural Science Foundation of China[51772302] ; CAS International Cooperation Key Program[174321KYSB20180008]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000476965000038
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; CAS International Cooperation Key Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134760]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Jie; Wang, Jingyan
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tian, Zhilin,Ren, Xiaomin,Lei, Yiming,et al. Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2019,39(14):4245-4254.
APA	Tian, Zhilin.,Ren, Xiaomin.,Lei, Yiming.,Zheng, Liya.,Geng, Wanrong.,...&Wang, Jingyan.(2019).Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,39(14),4245-4254.
MLA	Tian, Zhilin,et al."Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 39.14(2019):4245-4254.