Corrosion behavior of PS-PVD spray Yb2Si2O7 environmental barrier coatings during continuous water vapor exposure

被引：23
|
作者：
Wu, Jian [1 ,2 ]
Yang, Wenchao [1 ]
Zhang, Xiaofeng [2 ]
Wang, Chao [2 ]
Zhuo, Xueshi [2 ]
Zhan, Yongzhong [1 ]
Liu, Min [2 ]
Zhou, Kesong [2 ]
机构：
[1] Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Guangxi, Peoples R China
[2] Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510651, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 210卷
基金：
中国国家自然科学基金;
关键词：
Environmental barrier coatings; Plasma spray-physical vapor deposition; Continuous steam exposure; Thermally grown oxide; RECESSION BEHAVIOR; VOLATILITY; COMPOSITES; EVOLUTION; PROPERTY; MULLITE; PHASE;
D O I：
10.1016/j.corsci.2022.110831
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of Si/Yb2Si2O7 environmental barrier coatings prepared by plasma spray-physical vapor deposition during continuous water vapor exposure were investigated at 1350-1450 degrees C over 500 h. The results showed that the temperature had a major impact on the corrosion morphology of the EBCs. The various corrosion morphologies of Yb2Si2O7 affected the oxidation kinetics of the TGO, and therefore the TGO had a porous structure, as was attributed to the Si-SiO2 phase transition and H2 placeholder aggregation. Consequently, the Si/ Yb2Si2O7 EBCs need to be added a protecting layer or film that is more resistant to steam corrosion.
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页数：10
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