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

IMR OpenIR

	Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures
	Tian, Zhilin 1,2; Ren, Xiaomin 1,3; Lei, Yiming 1,3; Zheng, Liya 1; Geng, Wanrong 1,3; Zhang, Jie 1; Wang, Jingyan 1
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyan(jywang@imr.ac.cn)
	2019-11-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	39 期号:14 页码:4245-4254
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.
关键词	Rare earth silicates Corrosion Calcium-magnesium-alumino-silicate Environmental barrier coating materials
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; CAS International Cooperation Key Program
DOI	10.1016/j.jeurceramsoc.2019.05.036
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000476965000038
出版者	ELSEVIER SCI LTD
引用统计	被引频次：91[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/134759
专题	中国科学院金属研究所
通讯作者	Zhang, Jie; Wang, Jingyan
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, 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.