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.

引用

页数：10

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