Abstract
The results from a comparative study of erosion resistance of various coatings and some material modification treatments for protecting compressor airfoils made of 17-4 PH stainless steel against sand erosion, are presented. Coatings based on either aluminum, nickel or titanium nitride and material modifications by ion implantation and cryogenic treatment were evaluated by dry particle erosion testing in accordance with the ASTM G76-83 Standard Practice, at different angles of impingement (30°, 60° and 90°). The TiN coatings applied by PVD techniques, were found to be the most erosion resistant. All the PVD deposition techniques appeared capable of producing durable coatings, but in degrees that varied with the deposition method and vendor. All the TiN coatings investigated proved more resistant to erosion at a 30° impingement angle. The implications for compressor airfoil applications are discussed.
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Immarigeon, JP., Chow, D., Parameswaran, V. et al. Erosion Testing of Coatings for Aero Engine Compressor Components. Advanced Performance Materials 4, 371–388 (1997). https://doi.org/10.1023/A:1008644527599
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DOI: https://doi.org/10.1023/A:1008644527599