Abstract
In this present investigation, lanthanum titanium aluminate (LTA) powder is prepared by solid-state sintering followed by spheroidization through an atmospheric plasma spray torch within a spheroidization chamber. The spheroidized powder is used to deposit thermal barrier coatings (TBCs). The developed coatings were evaluated for thermal cycling performance at 1150 °C, and the phase and microstructural observations were carried out before and after thermal cycling. A continuous layer of alumina (Al2O3) thermally grown oxide (TGO) is grown at the interface of the NiCoCrAlY bond coat and YSZ top coat in both coatings. The higher TGO growth rate kinetics beyond the critical thickness-induced thermal stresses and the associated coefficient of thermal expansion (CTE) mismatch between the TGO and the top coat resulted in the delamination of the coatings.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
