Effect of HfO2 content on CMAS corrosion resistance of a promising Hf6Ta2O17 ceramic for thermal barrier coatings

被引：16

作者：

Liu, S. ^{[1
,2
]}

Hu, X. P. ^{[1
,2
]}

Liu, Q. ^{[1
,2
]}

Guo, J. W. ^{[1
,2
]}

Wu, J. Y. ^{[1
,2
]}

Zhu, W. ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan Pr, Xiangtan 411105, Hunan, Peoples R China

[2] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 208卷

关键词：

Thermal barrier coatings (TBCs); Calcium-magnesium-alumina-silicate (CMAS); HfO2; content; Corrosion resistance mechanism; OPTICAL BASICITY; CONDUCTIVITY; DEGRADATION; OXIDE; POLARIZABILITY; MECHANISMS; BEHAVIOR; FAILURE; YB; RE;

D O I：

10.1016/j.corsci.2022.110712

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of HfO2 content on CMAS corrosion resistance of Hf6Ta2O17 ceramics at different temperatures is investigated. The results show that Hf6Ta2O17 ceramics with different HfO2 content exhibit no difference in CMAS corrosion resistance at 1250 degrees C and short-term corrosion (< 16 h). But Hf6Ta2O17 ceramic with a higher HfO2 content shows the best corrosion resistance at 1300 degrees C and 1400 degrees C under long-term corrosion (> 50 h). The increase in HfO2 content can reduce the reactivity of Hf6Ta2O17 ceramic with molten CMAS and increase the generation rate of dense product layers.

引用

页数：10

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