Abstract
Thermal barrier coatings (TBCs) are extensively used to protect critical components such as aircraft turbines to provide thermal insulation at elevated temperatures. At high operating temperatures, damage mechanisms such as oxidation and hot corrosion result in spallation of TBC system. The spallation occurs due to the phase transformation during penetration of hot corrosion salts to top coat. YSZ is mainly used as top coat material for TBC systems. However, YSZ cannot be used in temperature higher than 1000 °C. More superior efficiency of gas turbine engines will demand a new generation materials for TBC systems. Nowadays, rare earth zirconates, Gd2Zr2O7, La2Zr2O7, YSZ/Gd2Zr2O7, and YSZ/La2Zr2O7 used as ceramic top coat materials in gas turbine engine components owing to their superior thermal isolation and hot corrosion resistance properties. In this study, hot corrosion mechanism, rare earth zirconates, and their properties as well as their hot corrosion behavior in TBCs were investigated based on literature studies.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Doleker KM, Karaoglanli AC (2017) Comparison of oxidation behavior of YSZ and Gd2Zr2O7 thermal barrier coatings (TBCs). Surf Coat Technol 318:198–207. https://doi.org/10.1016/j.surfcoat.2016.12.078
Doleker KM, Ahlatci H, Karaoglanli AC (2017) Investigation of isothermal oxidation behavior of thermal barrier coatings (TBCs) consisting of YSZ and multilayered YSZ/Gd2Zr2O7 ceramic layers. Oxid Met 88(1–2):109–119. https://doi.org/10.1007/s11085-016-9690-4
Gunen A (2016) Micro-abrasion wear behavior of thermal-spray-coated steel tooth drill bits. Acta Phys Pol A 130(1):217–222. https://doi.org/10.12693/APhysPolA.130.217
Habibi MH, Li W, Guo SM (2012) Evolution of hot corrosion resistance of YSZ, Gd2Zr2O7, and Gd2Zr2O7+ YSZ composite thermal barrier coatings in Na2SO4+ V2O5 at 1050 C. J Eur Ceram Soc 32(8):1635–1642. https://doi.org/10.1016/j.jeurceramsoc.2012.01.006
Habibi MH, Li W, Liang J, Guo SM (2013) An investigation on hot corrosion behavior of YSZ-Ta2O5 in Na2SO4+ V2O5 salt at 1100° C. Corros Sci 75:409–414. https://doi.org/10.1016/j.corsci.2013.06.025
Kirtay S (2015) Improvement of oxidation resistance of mild steel by SiO2-Al2O3 sol gel coating. Acta Phys Pol A 128(2-B):B90–B92. https://doi.org/10.12693/APhysPolA.128.B-90
Ozgurluk Y, Doleker KM, Karaoglanli AC (2017) Hot corrosion behavior of YSZ, Gd2Zr2O7 and YSZ/Gd2Zr2O7 thermal barrier coatings exposed to molten sulfate and vanadate salt. Appl Surf Sci. https://doi.org/10.1016/j.apsusc.2017.09.47
Qureshi IN, Shahid M, Khan AN (2015) Effect of bondcoat thickness on high temperature hot corrosion of ZrO2-8Y2O3 thermal barrier coating. Acta Phys Pol A 128:B314–B316. https://doi.org/10.12693/APhysPolA.128.B-314
Funding
This investigation was financially supported by Scientific Research Projects (BAP) Coordinatorship of Karabuk University with the project code of KBÜBAP-17-DR-259 and the Scientific and Technological Research Council of Turkey with the project code of TUBITAK, 113R049. This study was carried out as a Ph.D. thesis by Yasin Ozgurluk in the Graduate School of Natural and Applied Science at the University of Karabuk, Turkey.
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is part of the Topical Collection on Geo-Resources-Earth-Environmental Sciences
Rights and permissions
About this article
Cite this article
Ozgurluk, Y., Doleker, K.M., Ahlatci, H. et al. Investigation of hot corrosion behavior of thermal barrier coating (TBC) systems with rare earth contents. Arab J Geosci 11, 267 (2018). https://doi.org/10.1007/s12517-018-3625-0
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s12517-018-3625-0