Thermal cycling behaviour of plasma-sprayed thermal barrier coatings with pre-oxidized NiCrAlY and NiCoCrAlY bond-coats

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dc.contributor.authorSlámečka, Karelcs
dc.contributor.authorJech, Davidcs
dc.contributor.authorKlakurková, Lenkacs
dc.contributor.authorTkachenko, Serhiics
dc.contributor.authorRemešová, Michaelacs
dc.contributor.authorGejdoš, Pavelcs
dc.contributor.authorČelko, Ladislavcs
dc.coverage.issue1cs
dc.coverage.volume23cs
dc.date.accessioned2020-12-16T15:55:01Z
dc.date.available2020-12-16T15:55:01Z
dc.date.issued2020-02-19cs
dc.description.abstractThis contribution deals with thermal cycling of thermal barrier coatings (TBCs) with NiCrAlY and NiCoCrAlY bond-coats, and yttria stabilized zirconia (YSZ) top-coat that were prepared by atmospheric plasma spraying from commercial powders. The samples were pre-oxidized, based on isothermal oxidation of the two bond-coats, in order to diminish the influence of residual stresses after spraying on thermal cycling experiments. Surface topographies of both bond-coats were measured using optical profilometry and several surface parameters were evaluated to characterize them. Microstructural degradation caused by thermal cycling was examined by scanning electron microscopy with an emphasis on the role of bond-coat surface features on local damage mechanisms. An important micromechanism for TBCs with the NiCoCrAlY bond-coat was multiple parallel cracking of the TGO layer that was likely also responsible for lower endurance of these coatings.en
dc.formattextcs
dc.format.extent439-444cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProcedia Structural Integrity. 2020, vol. 23, issue 1, p. 439-444.en
dc.identifier.doi10.1016/j.prostr.2020.01.126cs
dc.identifier.isbn978-80-214-5760-7cs
dc.identifier.issn2452-3216cs
dc.identifier.other163208cs
dc.identifier.urihttp://hdl.handle.net/11012/193513
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofProcedia Structural Integritycs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S245232162030192Xcs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2452-3216/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectThermal barrier coatingsen
dc.subjectBond-coaten
dc.subjectPlasma sprayen
dc.subjectRoughnessen
dc.subjectOxidationen
dc.subjectThermal cyclingen
dc.titleThermal cycling behaviour of plasma-sprayed thermal barrier coatings with pre-oxidized NiCrAlY and NiCoCrAlY bond-coatsen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-163208en
sync.item.dbtypeVAVen
sync.item.insts2021.03.05 12:54:29en
sync.item.modts2021.03.05 12:14:43en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Charakterizace materiálů a pokročilé povlaky 1-06cs
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