Degradation of Thermal Barrier Coatings with Molten CaO-MgO-Al2O3-SiO2 (CMAS) Deposition and Hot Corrosion

Muhammet Karabas, Emre Bal, Ayse Kiliç, Ismail Yilmaz Taptik

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Thermal barrier coatings (TBCs) are susceptible to
degradation by molten CMAS (calcium-magnesium
alumino silicate) deposits and hot corrosion , when
employed in gas turbine engines operating in a
dust-laden environment and low quality fuels . In
this study, CMAS and hot corrosion degradation of
TBCs are investigated. Yttria stabilized zirconia
(YSZ) and Ceria-yttria stabilized zirconia coatings
in contact with a CMAS dust and hot corrosion
salts deposit were subjected to heat treatment in air
at temperature 1200°C for 12h. Phase
transformations and microstructural avolution were
examined by using x-ray diffraction and scanning
electron microscopy.
Original languageEnglish
Title of host publication18th International Metallurgy & Materials Congress
PublisherInternational Metallurgy & Materials Congress
Pages810-813
Publication statusPublished - 2016
Externally publishedYes

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