Abstract
The low thermal cycling life is a big concern for plasma sprayed thermal barrier coatings (TBCs). This paper presents a novel and effective preheating treatment conducted by one supersonic plasma jet, which has been proven to significantly improve the anti-oxidation and thermal shock resistance of TBCs. After preheating treatment, the surface roughness (Ra) of metallic bond coat decreased by nearly 30%, while one dense oxide layer appeared on its surface. This oxide layer effectively suppressed the growth of thermally grown oxides (TGOs), resulted in the improvement of anti-oxidation of TBCs. The results of water-quenching test from 1100°C into room temperature showed that the thermal cycling life of preheated TBCs reached 846 cycles, approximately 126 cycles higher than their counterparts without preheating.
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.
