Corrosion of Thermal Barrier Coatings for Gas Turbines by Air Pollution

Cao, Xueqiang; Wang, jinshuang; Liu, Li; Lu, Guoqiang; Wang, Lu; Deng, Longhui; Zhang, Yixing; Jiang, Jianing; Cao, Qin; Dong, Shujuan; Chen, Wenbo; Yuan, Fuhe

doi:10.2139/ssrn.4281560

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Corrosion of Thermal Barrier Coatings for Gas Turbines by Air Pollution

27 Pages Posted: 19 Nov 2022

See all articles by Xueqiang Cao

Xueqiang Cao

Wuhan University of Technology - State Key Laboratory of Silicate Materials for Architectures

Thermal barrier coatings are popularly used on high temperature components of gas turbines. We have observed that TBCs could be seriously corroded by acidic air pollution in natural environment. We have also revealed the corrosion mechanism which could be related to the following two chemical processes: (1) YSZ is corroded by moisture, and the acidic air pollution accelerates the corrosion. (2) The electrode potential difference between bond coat and substrate results in the corrosion of bond coat in acidic air pollution.

Keywords: Thermal barrier coatings, Corrosion, Natural environment, Air pollution

Suggested Citation: Suggested Citation

Cao, Xueqiang and Wang, jinshuang and Liu, Li and Lu, Guoqiang and Wang, Lu and Deng, Longhui and Zhang, Yixing and Jiang, Jianing and Cao, Qin and Dong, Shujuan and Chen, Wenbo and Yuan, Fuhe, Corrosion of Thermal Barrier Coatings for Gas Turbines by Air Pollution. Available at SSRN: https://ssrn.com/abstract=4281560 or http://dx.doi.org/10.2139/ssrn.4281560