This study reviews the current understanding and research on the methods and performance of chromium diffusion coatings on nickel superalloys. Chromizing has been considered as an effective approach to improving the resistance to hot corrosion, especially type II hot corrosion, and the results from the literature shows that the different concentration of chromium in different types of nickel-based superalloys influence the coatings morphology and properties. Moreover, various methods have been developed to chromium diffusion coatings and the selection of method is not only dependent on processing temperature and time but also on the substrate in matter. Through the experimental results obtained by various researchers, the dependencies between coating deposition methods, process variables, and microstructure and surface properties of chromium diffusion coatings on nickel-based superalloys are discussed. Finally, the future research direction is pointed out.
Correlation Between Processing Parameters and Behavior of Chromium Diffusion Coatings on Nickel-Based Superalloys: A Review
Lect. Notes Electrical Eng.
Proceedings of the 5th China Aeronautical Science and Technology Conference ; Chapter : 86 ; 861-870
2021-11-02
10 pages
Article/Chapter (Book)
Electronic Resource
English
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