@Article{icces.2023.09818,
AUTHOR = {Biao Li},
TITLE = {Interfacial Delamination in High-Temperature Coatings with Segmented  Microstructures},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {25},
YEAR = {2023},
NUMBER = {1},
PAGES = {1--2},
URL = {http://www.techscience.com/icces/v25n1/53785},
ISSN = {1933-2815},
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.},
DOI = {10.32604/icces.2023.09818}
}