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Microstructural Characterization and Room-Temperature Erosion Behavior of As-Deposited SPS, EB-PVD and APS YSZ-Based TBCs

  • Rogerio S. Lima
  • Bruno M. H. Guerreiro
  • Maniya Aghasibeig
Peer Reviewed
  • 28 Downloads

Abstract

The erosion behavior at room temperature of as-deposited suspension plasma spray (SPS), electron beam physical vapor deposition (EB-PVD) and air plasma spray (APS) ZrO2-Y2O3 (YSZ)-based TBCs was investigated. All coatings were deposited on Inconel 625 alloy coupons. The same APS CoNiCrAlY bond coat was employed for all SPS and APS TBCs. The erodent material was 50-µm alumina, and the impact angles were 15° and 90°. A total of 4 different types of SPS YSZ-based TBCs were tested, which consisted of two distinct columnar-segmented and two distinct columnar-grown microstructures. The EB-PVD and APS YSZ TBCs were employed as benchmarks. The erosion performance of the different TBCs in this study was ranked based on the coating volume loss after wear testing. The TBC microstructures and phase compositions were evaluated via scanning electron microscopy and X-ray diffraction. The erosion mechanisms of the different TBCs were compared by analyzing the cross-sectional and top surface microstructures of the as-deposited and eroded TBCs. These are released results from the Surftec Industrial R&D Group of the National Research Council of Canada.

Keywords

APS EB-PVD Erosion SPS TBC YSZ 

Notes

Acknowledgments

The authors would like to acknowledge the outstanding contribution of Northwest Mettech for providing the two 8YSZ SPS TBCs and Arconic for providing the EB-PVD 8YSZ TBC benchmark. These results are based on the Surftec reports presented in 2012. The authors also would like to acknowledge Dr. Weijie Chen, for coordinating the erosion testing results at the NRC Ottawa site.

References

  1. 1.
    A. Feuerstein, J. Knapp, T. Taylor, A. Ashary, A. Bolcavage, and N. Hitchman, Technical and Economical Aspects of Current Thermal Barrier Coating Systems for Gas Turbine Engines by Thermal Spray and EBPVD: A Review, J. Therm. Spray Technol., 2008, 17(2), p 199-213CrossRefGoogle Scholar
  2. 2.
    S. Farokhi, Aircraft Propulsion, 2nd ed., Wiley, Chichester, 2015, p 8-9Google Scholar
  3. 3.
  4. 4.
    K. VanEvery, M.J.M. Krane, R.W. Trice, H. Wang, W. Porter, M. Besser, D. Sordelet, J. Ivasky, and J. Almer, Column Formation in Suspension Plasma-sprayed Coatings and Resultant Thermal Properties, J. Therm. Spray Technol., 2011, 20(4), p 817-828CrossRefGoogle Scholar
  5. 5.
    N. Curry, K. VanEvery, T. Snyder, and N. Markocsan, Thermal Conductivity Analysis and Lifetime Testing of Suspension Plasma-Sprayed Thermal Barrier Coatings, Coatings, 2014, 4, p 630-650.  https://doi.org/10.3390/coatings4030630 CrossRefGoogle Scholar
  6. 6.
    D. Zhou, O. Guillon, and R. Vassen, Development of YSZ Thermal Barrier Coatings Using Axial Suspension Plasma Spraying, Coatings, 2017, 7, p 120.  https://doi.org/10.3390/coatings7080120 CrossRefGoogle Scholar
  7. 7.
    A. Ganvir, C. Kumara, M. Gupta, and P. Nylen, Lattice Parameters and Density for Y2O3-Stabilized ZrO2, J. Therm. Spray Technol., 2017, 26, p 71-82CrossRefGoogle Scholar
  8. 8.
    A. Ganvir, N. Curry, S. Bjorklund, N. Markocsan, and P. Nylen, Characterization of Microstrucure and Thermal Properties of YSZ Coatings Obtained by Axial Suspension Plasma Spraying (ASPS), J. Therm. Spray Technol., 2015, 24(7), p 1195-1204CrossRefGoogle Scholar
  9. 9.
    B. Bernard, A. Quet, L. Bianchi, A. Joulia, A. Malie, V. Schick, and B. Remy, Thermal Insulation Properties of YSZ Coatings: Suspension Plasma Spraying (SPS) Versus Electron Beam Physical Vapor Deposition (EB-PVD) and Atmospheric Plasma Spraying (APS), Surf. Coat. Technol., 2017, 318, p 122-128CrossRefGoogle Scholar
  10. 10.
    W. Tabakoff, Investigation of Coatings at High Temperature for Use in Turbomachinery, Surf. Coat. Technol., 1989, 39(40), p 97-115CrossRefGoogle Scholar
  11. 11.
    F.C. Toriz, A.B. Thakker, and S.K. Gupta, Flight Service Evaluation of Thermal Barrier Coatings by Physical Vapor Deposition at 5200 h, Surf. Coat. Technol., 1989, 39(40), p 161-172CrossRefGoogle Scholar
  12. 12.
    R.P. Ingel and D. Lewis, III, Lattice Parameters and Density for Y2O3-Stabilized ZrO2, J. Am. Ceram. Soc., 1986, 69(4), p 325-332CrossRefGoogle Scholar
  13. 13.
    J.C. Anderson, K.D. Leaver, R.D. Rawlings, and J.M. Alexander, Materials Science, Chapman & Hall, London, 1990, p 312-313CrossRefGoogle Scholar
  14. 14.
    J.R. Nicholls, M.J. Deakin, and D.S. Rickerby, A Comparison Between the Erosion Behaviour of Thermal Spray and Electron Beam Physical Vapour Deposition Thermal Barrier Coatings, Wear, 1999, 233–235, p 352-361CrossRefGoogle Scholar
  15. 15.
    R.L. Lehman, Overview of Ceramic Design and Processing Engineering, Ceramic and Glasses – Vol 4 Materials Handbook, S.J. Schneider, Ed., ASM International, Materials Park, OH, 1991, p 29-37Google Scholar
  16. 16.
    R.G. Wellman, M.J. Deakin, and J.R. Nicholls, The Effect of TBC Morphology on the Erosion Rate of EB PVD TBCs, Wear, 2005, 258, p 349-356CrossRefGoogle Scholar
  17. 17.
    H.E. Eaton and R.C. Novak, Particulate Erosion of Plasma-Sprayed Porous Ceramic, Surf. Coat. Technol., 1987, 30, p 41-50CrossRefGoogle Scholar
  18. 18.
    F. Cernuschi, L. Lorenzoni, S. Capelli, C. Guardamagna, M. Karger, R. Vassen, K. von Niessen, N. Markocsan, J. Menuey, and C. Giolli, Solid Particle Erosion of Thermal Spray and Physical Vapour Deposition Thermal Barrier Coatings, Wear, 2011, 271, p 2909-2918CrossRefGoogle Scholar

Copyright information

© ASM International 2018

Authors and Affiliations

  • Rogerio S. Lima
    • 1
  • Bruno M. H. Guerreiro
    • 1
  • Maniya Aghasibeig
    • 1
  1. 1.National Research Council of Canada (NRC)BouchervilleCanada

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