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Progress in the degradation of thermal and environmental barrier coating materials caused by calcium-magnesium-aluminum-silicate deposit
Zhilin Chen, Xingwang Lai, Yuting Liang, Lingxi Qu, Zhilin Tian, Bin Li
Extreme Materials ›› 2025, Vol. 1 ›› Issue (1) : 9-37.
PDF(46388 KB)
PDF(46388 KB)
Progress in the degradation of thermal and environmental barrier coating materials caused by calcium-magnesium-aluminum-silicate deposit
| 1. | The historical overview of the CMAS corrosion in gas turbine engines is outlined. |
| 2. | This review examines recent progress on the CMAS corrosion of thermal and environmental barrier coating materials. |
| 3. | The role of rare earth elements in the CMAS corrosion and strategies to mitigate CMAS corrosion are summarized. |
Thermal and environmental barrier coatings play a crucial role in protecting high-temperature structural components in gas turbine engines. As turbine inlet temperatures continue to rise, corrosion challenges posed by dust, volcanic ash, and other particulate matter—collectively known as CMAS—have become increasingly severe. Understanding the reaction mechanisms between CMAS and these coatings, identifying the key factors influencing CMAS corrosion, and developing methods to inhibit CMAS infiltration are essential for advancing high-performance gas turbine engines. This review examines the origins of CMAS corrosion and summarizes recent research on CMAS corrosion mechanisms in thermal and environmental barrier coating materials. Additionally, the role of rare earth elements in CMAS corrosion and various strategies to mitigate CMAS effects are discussed. Finally, the review highlights potential directions for future research.
CMAS corrosion / Thermal barrier coating / Environmental barrier coating / Ceramic matrix composites / High entropy
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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
This work was financially supported by the National Natural Science Foundation of China (Grant No. 52202078), the Leading Talent Project of the National Special Support Program (2022WRLJ003), Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholars (Grant No. 2021B1515020083), and the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2021A1515110293).
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