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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, Zhilin1,2; Ren, Xiaomin1,3; Lei, Yiming1,3; Zheng, Liya1; Geng, Wanrong1,3; Zhang, Jie1; Wang, Jingyan1
Corresponding AuthorZhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyan(jywang@imr.ac.cn)
2019-11-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume39Issue:14Pages:4245-4254
AbstractWith 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.
KeywordRare earth silicates Corrosion Calcium-magnesium-alumino-silicate Environmental barrier coating materials
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; CAS International Cooperation Key Program
DOI10.1016/j.jeurceramsoc.2019.05.036
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[201711E130703201] ; National Natural Science Foundation of China[51772302] ; CAS International Cooperation Key Program[174321KYSB20180008]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000476965000038
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/134759
Collection中国科学院金属研究所
Corresponding AuthorZhang, Jie; Wang, Jingyan
Affiliation1.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
Recommended Citation
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.
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