Abstract
Platinum-aluminide coatings provide excellent protection for turbine blades against the aggressive environments in which modern aero-gas turbines operate. However, there is an increasing interest in the modification of aluminide coatings with other noble metals, such as iridium. This study assessed the oxidation performance of an iridium-aluminide and an iridium/platinum-aluminide on MarM002 substrates. The coatings were isothermally soaked at 1100°C and analysed using optical, SEM and XRD techniques, with their performance being gauged against that of a low-activity platinum-aluminide. Both of the iridium systems offered a lower level of performance than that afforded by the platinum-aluminide. This paper will discuss the mechanisms of degradation of these coating systems and address the scale growth and adherence.
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.
