| 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 Author | Zhang, Jie(jiezhang@imr.ac.cn) ; Wang, Jingyan(jywang@imr.ac.cn) |
| 2019-11-01 | |
| Source Publication | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| ISSN | 0955-2219 |
| Volume | 39Issue:14Pages:4245-4254 |
| Abstract | 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. |
| Keyword | Rare earth silicates Corrosion Calcium-magnesium-alumino-silicate Environmental barrier coating materials |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[201711E130703201] ; National Natural Science Foundation of China[51772302] ; CAS International Cooperation Key Program[174321KYSB20180008] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000476965000038 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134761 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Jie; Wang, Jingyan |
| Affiliation | 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 |
| 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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