Evaluation of oxidation and thermal cyclic behavior of YSZ, Gd2Zr2O7 and YSZ/Gd2Zr2O7 TBCs

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dc.authoridDoleker, Kadir Mert/0000-0003-4057-6832
dc.contributor.authorDoleker, Kadir Mert
dc.contributor.authorOzgurluk, Yasin
dc.contributor.authorAhlatci, Hayrettin
dc.contributor.authorKaraoglanli, Abdullah Cahit
dc.date.accessioned2024-09-29T16:00:47Z
dc.date.available2024-09-29T16:00:47Z
dc.date.issued2019
dc.departmentKarabük Üniversitesien_US
dc.description8th International Meeting of Thermal Projection (RIPT) -- DEC 06-08, 2017 -- Limoges, FRANCEen_US
dc.description.abstractThermal barrier coatings (TBCs) are widely used to increase gas turbine efficiency and to prolong the lifetimes of superalloy substrates. Yttria (7-8%) stabilized zirconia (YSZ) is used as a state of the art TBC top coating material. In recent years, rare earth zirconates have drawn interest as top coating materials due to their high phase transformation temperature and low thermal conductivity. In the present research, CoNiCrAlY powders were sprayed on Inconel 718 superalloy substrates using high velocity oxy fuel (HVOF) deposition technique. YSZ, Gd2Zr2O7 (GZ) and YSZ/GZ top coats were then deposited on the resulting bond coat using EB-PVD technique. The produced TBCs were exposed to isothermal oxidation at 1100 degrees C for 4 different periods, and furnace thermal cyclic tests were conducted at 1150 degrees C. After thermal loadings, TGO (thermally grown oxide) growth behavior and crack surfaces of TBCs were evaluated. Samples were compared with each other using analysis techniques like scanning electron microscopy (SEM), energy dispersive sprectrum (EDS) elemental mapping and X-ray diffraction (XRD) before and after the oxidation tests. The results showed that double layered TBC system is more durable against high temperature degradations.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [113R049]; Scientific Research Projects (BAP) Coordinator ship of Karabuk University [KBUBAP-17-DR-202]en_US
dc.description.sponsorshipThis investigation was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK, 113R049) and Scientific Research Projects (BAP) Coordinator ship of Karabuk University with project code of KBUBAP-17-DR-202.en_US
dc.identifier.doi10.1016/j.surfcoat.2018.11.055
dc.identifier.endpage275en_US
dc.identifier.issn0257-8972
dc.identifier.issn1879-3347
dc.identifier.scopus2-s2.0-85057041444en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage262en_US
dc.identifier.urihttps://doi.org/10.1016/j.surfcoat.2018.11.055
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5346
dc.identifier.volume371en_US
dc.identifier.wosWOS:000472694300028en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofSurface & Coatings Technologyen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectThermal barrier coating (TBC)en_US
dc.subjectHigh velocity oxygen fuel (HVOF)en_US
dc.subjectOxidationen_US
dc.subjectThermal cyclicen_US
dc.subjectYSZen_US
dc.subjectGd2Zr2O7 (GZ)en_US
dc.titleEvaluation of oxidation and thermal cyclic behavior of YSZ, Gd2Zr2O7 and YSZ/Gd2Zr2O7 TBCsen_US
dc.typeConference Objecten_US

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