High temperature behavior of HfSiO4 subjected to calcium-magnesium-alumina-silicate (CMAS) and high-velocity water vapor

被引：13

作者：

Li, Hao ^{[1
]}

Yu, Yiping ^{[1
]}

Fang, Bing ^{[1
]}

Xiao, Peng ^{[1
]}

Li, Wei ^{[1
]}

Wang, Song ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 02期

关键词：

HfSiO4; CMAS attack; Water vapor scouring; Environmental barrier coating; THERMAL-BARRIER COATINGS; CORROSION BEHAVIOR; OXIDATION BEHAVIOR; CERAMICS; COMPOSITES; ZIRCON; SI3N4; ZR;

D O I：

10.1016/j.jeurceramsoc.2022.09.005

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

HfSiO4 is considered as a candidate for environmental barrier coating (EBC), but there is a lack of comprehensive evaluation of its resistance against corrosive medium. We herein study the behavior of HfSiO4 against CMAS melt and high-velocity water vapor. HfSiO4 shows poor resistance to CMAS attack. Si diffusion occurs during CMAS attack, which leads to the formation of HfO2 and CaSi2O5. HfSiO4 decomposes to form SiO2 and HfO2 under the scouring of water vapor, in which SiO2 forms volatile hydroxide and is taken away by high-velocity steam. HfSiO4 is not the preferred system for surface layer of EBC system and is expected to be used as intermediate transition layer.

引用

收藏

页码：621 / 628

页数：8

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