Abstract
Y-modified alumina/niobium aluminide coatings were prepared on the surface of the niobium substrate by pack cementation and subsequent pre-oxidation treatments. The pre-oxidation behaviour of the Y-modified and undoped alumina/niobium aluminide coatings in the air atmosphere at 1300 ℃ and their corrosion behaviour in the molten DZ4125L superalloy at 1500 ℃ were investigated in this study. It was demonstrated that the Y addition could reduce the growth rate of the oxide scale, suppress the localised oxidation failure and improve the molten superalloy corrosion-resistance of the alumina/niobium aluminide coatings. The mechanism of Y modification has also been revealed.
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.
