Abstract
Calcium-magnesium-alumino-silicate (CMAS) attack is a significant failure mechanism for thermal barrier coatings (TBC). In this study, La2(Zr0.7Ce0.3)2O7 (LZ7C3) TBC prepared by electron-beam physical vapor deposition was found to be highly effective in resisting CMAS infiltration for prolonged durations (24h, 1250°C), while conventional Y2O3-stabilized ZrO2 TBC was completely penetrated by molten CMAS within 30min. This resistance was achieved through crystallization of CMAS as a result of high-temperature chemical interactions between LZ7C3 coating and CMAS glass. The crystalline products, mainly consisted of La-Ce apatite and C-ZrO2, tended to form a sealing layer and can effectively prevent CMAS from further infiltration.
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.
