Abstract
Heat-resistant coatings are considered for the external surface of high-pressure turbine (HPT) single-crystal blades for promising gas turbine engines (GTEs) made from carbon-free nickel superalloys with rhenium or rhenium plus ruthenium. Nickel superalloys covered with heat-resistant coatings consisting of heat-resistant connecting layers and an external ZrO2-(7–8 wt %)Y2O3 ceramic layer are subjected to heat resistance and high-temperature tests. The test results are used to choose the heat-resistant layer that ensures the highest properties of a composition heat-resistant coating. The use of sequential chemical and physical deposition methods for coating layers is shown to be required to protect HPT blades in promising GTEs. Medium-frequency magnetron plasmachemical deposition of ceramic layers in heat-resistant coatings with a low thermal conductivity is found to be promising.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. N. Kablov, S. A. Muboyadzhyan, S. A. Budinovskii, and A. N. Lutsenko, “Ion-Plasma Protective Coatings for Gas-Turbine Engine Blades,” Russian Metallurgy (Metally), No. 5, 413–424 (2007).
E. N. Kablov and S. A. Muboyadzhyan, “Protective Coatings for Turbine Blades of Promising GTE,” GTT, No. 3(12), 30–32 (2001).
S. A. Muboyadjyan, “High-Temperature Ion-Plasma Coatings for Gas-Turbine Engine Vanes,” Aerospace J., May–June, 24–25 (1998).
W. S. Walston, J. C. Schaeffer, and W. H. Murphy, “A New Type of Microstructural Instability in Superalloys-SRZ,” in Superolloys 1996, Ed. by R. D. Kissinger et al. (TMS, Warrendale, 1996), pp. 9–18.
S. A. Muboyadzhyan and A. G. Galoyan, “Thermodiffusion Processes of Surface Saturation of Nickel Superalloys by Refractory Elements and Carbon,” Tekhnologiya Legkikh Splavov, No. 2, 114–120 (2007).
V. P. Lesnikov, V. P. Kuznetsov, Yu. A. Goroshenko, et al., “Diffusion Gas-Phase Saturation of Nickel Alloys by Aluminum and Chromium Using a Circulation Method,” Metalloved. Term. Obrab. Met., No. 10, 21–25 (1998).
S. A. Budinovskii, S. A. Muboyadzhyan, A. M. Gayamov, and S. V. Stepanov, “Ion-Plasma Heat-Resistant Coatings with a Composite Barrier Layer for the Oxidation Protection of a ZhS36-VI Alloy,” Metalloved. Term. Obrab. Met., No. 1, 34–40 (2011).
R. G. Wellman, M. J. Deakinb, and J. R. Nicholls, “The Effect of TBC Morphology on the Erosion Rate of EB PVD TBCs,” Wear, No. 258, 349–356 (2005).
J. R. Nicholls, K. J. Lawson, A. Johnstone, and D. S. Rickerby, “Methods to Reduce the Thermal Conductivity of EB-PVD TBCs,” Surface and Coatings Technology, No. 151–152, 383–391 (2002).
D. Zhu and R. A. Miller, Thermal Conductivity and Sintering Behavior of Advanced Thermal Barrier Coatings (NASA/TM-2002, 2002).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.N. Kablov, S.A. Muboyadzhyan, 2012, published in Metally, 2012, No. 1, pp. 5–13.
Rights and permissions
About this article
Cite this article
Kablov, E.N., Muboyadzhyan, S.A. Heat-resistant coatings for the high-pressure turbine blades of promising GTEs. Russ. Metall. 2012, 1–7 (2012). https://doi.org/10.1134/S0036029512010089
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036029512010089