2017年10月
Structural stabilization of EBC with thermal energy reflection at high temperatures
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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- 巻
- 37
- 号
- 13
- 開始ページ
- 4155
- 終了ページ
- 4161
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jeurceramsoc.2017.04.055
- 出版者・発行元
- ELSEVIER SCI LTD
Structural stability of an environmental barrier coating (EBC) with thermal energy reflection function that has a periodic layered structure consisting of Y2Ti2O7 (YT) and Al2O3 is essential to maintenance of the EBC performance at high temperatures. The effect of adding Al to YT layer on the structural stability was investigated using model samples in which Al2O3 layer was formed on both the YT and Al-doped YT (AYT) substrate by aerosol deposition (AD). Exposure to heat selectively dissipated the Al(2)0(3) layer on the YT substrate near the interface between the layer and the grain boundaries of the substrate. In contrast, the Al2O3 layer on the AYT substrate remained intact upon heating when Al was added at the solid solution limit. The Al2O3 layer was found to exhibit a pronounced degree of (0001) basal plane texture. An increase in the impact velocity of particles during AD effectively developed the basal fiber texture. (C) 2017 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jeurceramsoc.2017.04.055
- ISSN : 0955-2219
- eISSN : 1873-619X
- Web of Science ID : WOS:000404704800037