Thermal insulation of YSZ and erbia-doped yttria-stabilised zirconia EB-PVD thermal barrier coating systems after CMAS attack

dc.contributor.authorBoissonnet, Germain
dc.contributor.authorChalk, Christine
dc.contributor.authorNicholls, John R.
dc.contributor.authorBonnet, Gilles
dc.contributor.authorPedraza, Fernando
dc.date.accessioned2020-12-11T13:59:55Z
dc.date.available2020-12-11T13:59:55Z
dc.date.issued2020-10-01
dc.description.abstractThe impact of small deposits of calcium–magnesium–aluminium silicates (CMAS) on the top of thermal barrier coatings (TBCs) made of yttria-stabilised zirconia (YSZ) produced via electron-beam physical vapour deposition (EB-PVD) is shown to play a role in the microstructural and chemical stability of the coatings; hence, it also affects the thermal insulation potential of TBCs. Therefore, the present work investigates the degradation potential of minor CMAS deposits (from 0.25 to 5 mg·cm−2) annealed at 1250 °C for 1 h on a novel Er2O3-Y2O3 co-stabilised ZrO2 (ErYSZ) EB-PVD TBC, which is compared to the standard YSZ coating. Due to the higher reactivity of ErYSZ coatings with CMAS, its penetration is limited in comparison with the standard YSZ coatings, hence resulting in a better thermal insulation of the former after ageing.en_UK
dc.identifier.citationBoissonnet G, Chalk C, Nicholls JR, et al., (2020) Thermal insulation of YSZ and erbia-doped yttria-stabilised zirconia EB-PVD thermal barrier coating systems after CMAS attack. Materials, Volume 13, Issue 19, Article number 4382en_UK
dc.identifier.issn1996-1944
dc.identifier.urihttps://doi.org/10.3390/ma13194382
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16079
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectthermal barrier coatings (TBCs)en_UK
dc.subjectelectron-beam physical vapour deposition (EB-PVD)en_UK
dc.subjectyttria-stabilised zirconia (YSZ)en_UK
dc.subjectErbia-yttria co-stabilised zirconiaen_UK
dc.subjectthermal diffusivityen_UK
dc.titleThermal insulation of YSZ and erbia-doped yttria-stabilised zirconia EB-PVD thermal barrier coating systems after CMAS attacken_UK
dc.typeArticleen_UK

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