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Interfacial Delamination in High-Temperature Coatings with Segmented Microstructures
Biao Li1,*
1 School of Aeronautics, Northwestern Polytechnical University, Xi’an, 710072, China
* Corresponding Author: Biao Li. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 25(1), 1-2. https://doi.org/10.32604/icces.2023.09818
Abstract
High-temperature coatings are extensively used in aircraft engines and industrial gas turbines to protect
hot-section components from harsh operating environments [1]. Representative high-temperature coatings
include thermal barrier coatings and environmental barrier coatings, which are applied to substrates made
of superalloy and ceramic matrix composites, respectively. The durability of the coatings is of significant
importance for the structural integrity of the components [2-4]. A segmented microstructure was widely
used to improve the coatings' durability. A network of through-thickness vertical cracks is introduced into
the outer layer of the coatings, which increases the compliance of the coatings and therefore reduces the
interfacial stress. Nonetheless, the segmented coatings are still susceptible to interfacial delamination when
subjected to thermal fatigue or excessive loading conditions. To postpone the growth of the interface cracks,
it is important to elucidate their cracking behavior and clarify various influential factors. In recent years, we
have conducted numerical studies on the interfacial delamination problems in the high-temperature
coatings with segmented microstructures. This presentation will summarize the delamination behavior in
the segmented coatings. Several topics will be involved, including the formation mechanisms of the failure
modes, the effects of non-uniformity of the microstructures, and the delamination behavior in multi-layered
coatings. The idea of design map will be introduced to further improve the durability of the coatings.
Keywords
Cite This Article
APA Style
Li, B. (2023). Interfacial delamination in high-temperature coatings with segmented microstructures. The International Conference on Computational & Experimental Engineering and Sciences, 25(1), 1-2. https://doi.org/10.32604/icces.2023.09818
Vancouver Style
Li B. Interfacial delamination in high-temperature coatings with segmented microstructures. Int Conf Comput Exp Eng Sciences . 2023;25(1):1-2 https://doi.org/10.32604/icces.2023.09818
IEEE Style
B. Li, "Interfacial Delamination in High-Temperature Coatings with Segmented Microstructures," Int. Conf. Comput. Exp. Eng. Sciences , vol. 25, no. 1, pp. 1-2. 2023. https://doi.org/10.32604/icces.2023.09818