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Microstructure and self-healing properties of multi-layered NiCoCrAlY/TAZ/YSZ thermal barrier coatings fabricated by atmospheric plasma spraying
Wang, L.; Ming, C.; Zhong, X. H.; Ni, J. X.; Yang, J. S.; Tao, S. Y.; Zhou, F. F.; Wang, Y.
2019-09-15
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume488Pages:246
SubtypeArticle; Proceedings Paper
AbstractIn this paper, the multi-layered self-healing thermal barrier coatings (TBCs) have been fabricated by atmospheric plasma spraying (APS). The phase composition of the sprayed feedstock and the as-sprayed coating have been characterized. The thickness of each layer for the self-healing TBCs have been optimized based on previous finite element simulation results. The self-healing effect of the TBCs under burner rig test (BRT) has been characterized via in-situ acoustic emission technique. The self-healing ability of the TBCs has been also characterized via static high temperature oxidation test. The investigation results indicate that the thickness of each layer for the as-sprayed self-healing TBCs is nearly in our optimization range based on our previous work. The AE signals of the TBCs before and after self-healing are distinctly different. When the self-healing effect has appeared, some key AE signals for the crack propagation has disappeared. The AE signals which are located at the higher frequency have been inhibited at a certain degree. The static high temperature oxidation results indicate that the TBCs with self-healing effect has lower oxidation rate compared with that of the TBCs without self-healing. The effective thickness of the TGO layer for the TBCs with self-healing treatment is lower compared with that of the TBCs without self-healing treatment.
KeywordThermal barrier coatings Self-healing Atmospheric plasma spraying Microstructure Acoustic emission High temperature oxidation
DOI10.1016/j.apsusc.2019.05.268
Language英语
WOS Research AreaChemistry ; Materials Science ; Physics
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26835
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wang, L.,Ming, C.,Zhong, X. H.,et al. Microstructure and self-healing properties of multi-layered NiCoCrAlY/TAZ/YSZ thermal barrier coatings fabricated by atmospheric plasma spraying[J]. APPLIED SURFACE SCIENCE,2019,488:246.
APA Wang, L..,Ming, C..,Zhong, X. H..,Ni, J. X..,Yang, J. S..,...&Wang, Y..(2019).Microstructure and self-healing properties of multi-layered NiCoCrAlY/TAZ/YSZ thermal barrier coatings fabricated by atmospheric plasma spraying.APPLIED SURFACE SCIENCE,488,246.
MLA Wang, L.,et al."Microstructure and self-healing properties of multi-layered NiCoCrAlY/TAZ/YSZ thermal barrier coatings fabricated by atmospheric plasma spraying".APPLIED SURFACE SCIENCE 488(2019):246.
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