High-temperature performance of thermal environmental barrier coatings in 90%H2O-10%O2 conditions at 1475 °C

被引：9

作者：

Zhang, Zhenya ^{[1
,2
]}

Xue, Zhaolu ^{[1
]}

Park, Youngjin ^{[2
]}

Park, Hunkwan ^{[2
]}

Qiu, Zhibin ^{[3
]}

Qiao, Lijie ^{[3
]}

Feng, Peizhong ^{[4
]}

Wierzba, Bartlomiej ^{[5
]}

Byon, Eungsun ^{[2
]}

Zhang, Shihong ^{[1
]}

机构：

[1] Anhui Univ Technol, Key Lab Green Fabricat & Surface Technol Adv Met M, Minist Educ, Maanshan City 243000, Anhui, Peoples R China

[2] Korea Inst Mat Sci, Dept Extreme Environm Coatings, Chang Won 51508, Gyeongnam, South Korea

[3] Huadian Elect Power Res Inst Co LTD, Xiyuan 9th Rd, Hangzhou 310030, Zhejiang, Peoples R China

[4] China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China

[5] Siec Badawcza Lukasiewicz Warszawski Inst Technol, Ctr Corros & Protect Coatings, PL-02673 Warsaw, Poland

来源：

CORROSION SCIENCE | 2023年 / 224卷

关键词：

Thermal environmental barrier coating; Atmospheric plasma spraying; Thermally grown oxide; Cracks; Failure; SIC/SIC CMCS; MECHANISMS; CERAMICS; SILICATE;

D O I：

10.1016/j.corsci.2023.111535

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The performance of 50HfO2-50SiO2/YxYb(2 x)Si2O7 thermal environmental barrier coating prepared using atmospheric plasma spraying was investigated in the Al2O3 tube furnace in 90%H2O10%O2 conditions at 1475 degrees C. The results showed that YxYb(2 x)Si2O7 layer was contaminated by alumina impurities during the testing process. The thermally grown oxide layer was formed at the bond coat/SiC interface, it grew as the cycles increased. Furthermore, the (Y/Yb)2O3-HfO2 solid solution with a higher coefficient of thermal expansion was formed at YxYb(2 x)Si2O7/50HfO2-50SiO2 interface. The horizontal cracks were the principal factor that caused the failure of 50HfO250SiO2/YxYb(2x)Si2O7. 50HfO2-50SiO2/YxYb(2  x)Si2O7 protected SiC for 25 cycles in steam conditions.

引用

页数：10

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