Local residual stress evolution of highly irregular thermally grown oxide layer in thermal barrier coatings

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dc.contributor.authorJiang, Peng
dc.contributor.authorYang, Liuyu
dc.contributor.authorSun, Yongle
dc.contributor.authorLi, Dingjun
dc.contributor.authorWang, Tiejun
dc.date.accessioned2021-11-08T10:00:22Z
dc.date.available2021-11-08T10:00:22Z
dc.date.issued2020-12-25
dc.description.abstractLocal residual stress in thermally grown oxide (TGO) layers is the primary cause of failure of thermal barrier coating (TBC) systems, especially TBCs prepared by air plasma spray (APS) with a highly irregular TGO. Herein, the distribution of residual stress and the evolution of the irregular TGO layer in APS TBCs were investigated as a function of oxidation time. The stress was measured from cross-sectional micrographs and converted to the actual stress inside the coatings before sectioning. The TGO exhibited significant inhomogeneity at different locations. Stress conversion occurred across the TGO thickness; the layer near the yttria-stabilised zirconia (YSZ) component exhibited compressive stress, whereas that along the bond coat was under tensile stress. The evolution of the compressive stress is also discussed. These analyses may provide a better understanding of the mechanism of APS TBCs.en_UK
dc.identifier.citationJiang P, Yang L, Sun Y, et al., (2021) Local residual stress evolution of highly irregular thermally grown oxide layer in thermal barrier coatings. Ceramics International, Volume 47, Issue 8, April 2021, pp. 10990-10995en_UK
dc.identifier.issn0272-8842
dc.identifier.urihttps://doi.org/10.1016/j.ceramint.2020.12.220
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17243
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectThermal barrier coatingen_UK
dc.subjectThermally grown oxideen_UK
dc.subjectIrregular morphologyen_UK
dc.subjectLocal residual stressen_UK
dc.subjectNear in situ evolutionen_UK
dc.titleLocal residual stress evolution of highly irregular thermally grown oxide layer in thermal barrier coatingsen_UK
dc.typeArticleen_UK
dcterms.dateAccepted2020-12-22

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