Abstract
Conventional and platinum modified diffusion aluminide coatings on nickel base superalloys have been compared in tests designed to establish conditions representative of those existing in gas turbines operating over a range of applications. The resistances of these coatings to oxidation, high temperature hot corrosion, and low temperature hot corrosion have been compared. Platinum has been found to significantly improve the resistance of diffusion aluminides to all these forms of degradation. Substrate composition is also a factor affecting coating lives in oxidation attack and high temperature hot corrosion. Platinum improves diffusion aluminide coating performances by causing such coatings to more effectively utilize aluminum in the selective oxidation process.
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© 1989 ECSC, EEC, EAEC. Brussels and Luxembourg
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Schaeffer, J., Kim, G.M., Meier, G.H., Pettit, F.S. (1989). The Effects of Precious Metals on the Oxidation and Hot Corrosion of Coatings. In: Lang, E. (eds) The Role of Active Elements in the Oxidation Behaviour of High Temperature Metals and Alloys. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1147-5_16
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DOI: https://doi.org/10.1007/978-94-009-1147-5_16
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