MICROSTRUCTURE CHARACTERISTICS OF DETONATION GUN SPRAYED CoNiCrAlY COATINGS

  • Abdullah Cahit Karaoğlanlı
Keywords: Detonation gun spraying (D-gun spraying), CoNiCrAlY, Thermal barrier coatings (TBCs), Microstructure

Abstract

Overlay coatings are often chosen from the MCrAlY family of alloys. Overlay coatings are deposited by methods such as atmospheric plasma spraying (APS), high velocity oxy-fuel spraying (HVOF) and cold gas dynamic spraying (CGDS). CoNiCrAlY coatings are widely used for protection of superalloy components against harsh environments under service conditions in the hot sections of gas turbine engines. Detonation gun (D-gun) spraying is a promising process to produce CoNiCrAlY coatings with low porosity and excellent properties in gas turbine applications of thermal barrier coatings (TBCs) such as turbine blade, vanes or combustion chambers. In this study, microstructural properties of CoNiCrAlY coatings produced by detonation gun spraying (D-gun) were investigated. CoNiCrAlY coatings were investigated and evaluated using scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) analysis and X-ray diffractometer (XRD).

References

[1] Eliaz, N., Shemesh, G., Latanision, R. M., “Hot corrosion in gas turbine components”, Engineering Failure Analysis, Vol.9, 31–43, 2002.
[2] Kosieniak, E., Biesiada, K., Kaczorowski, J., Innocenti, M., Journal of Failure Analysis Prevention, Vol.12, 330–337, 2012.
[3] Salehnasab, B., Poursaeidi, E., Mortazavi, S. A., Farokhian, G. H., “Hot corrosion failure in the first stage nozzle of a gas turbine engine”, Engineering Failure Analysis, Vol.60, 316–325, 2016.
[4] Bose S., “High Temperature Coatings” Elsevier, Burlington, 253-273, 2007.
[5] Tamarin Y., “Protective Coatings for Turbine Blades”, ASM International, Ohio, 5-22, 2002.
[6] Miller, R. A., “Thermal barrier coatings for aircraft engines: history and directions”, Journal of Thermal Spray Technology, Vol.6, 35-42, 1997.
[7] Ghosh S., "Thermal Barrier Ceramic Coatings-A Review" in Advanced Ceramic Processing, edited by Adel Mohamed, Intech, Kolkata, 111-138, 2015.
[8] Xu H., Guo H., “Thermal barrier coatings”, Woodhead Publishing, Cambridge 25-30, 2011.
[9] Young D., “High temperature oxidation and corrosion of metals”, Elsevier Corrosion Series, 219-226, 2008.
[10] Padture, N., Gell, M., Jordan, E. H., “Thermal barrier coatings for gas-turbine engine applications”, Science, vol.296, 280-284, 2002.
[11] Shillington, E. A. G., Clarke, D. R., “Spalling failure of a thermal barrier coating associated with aluminium depletion in the bond-coat”, Acta Materialia, Vol.47, 1297-1305, 1999.
[12] Karaoglanli, A. C., Doleker, K. M., Demirel, B., Turk, A., Varol, R., ”Effect of shot peening on the oxidation behavior of thermal barrier coatings”, Applied Surface Science, 354, 314-322, 2015.
[13] P. Richer, M. Yandouzi, L. Beauvais, B. Jodoin, (2010), “Oxidation behaviour of CoNiCrAlY bond coats produced by plasma, HVOF and cold gas dynamic spraying” Surface and Coatings Technology 204, 3962-3974
[14] J. R. Davis, (2004), “Handbook of Thermal Spray Technology”, Ohio: ASM International, pp. 175-185.
[15] L. Pawlowski, (2008), “The Science and Engineering of Thermal Spray Coatings”, John Wiley & Sons, New York, NY, ISBN 978-0-471-49049-4
[16] M. R. Dorfman, (2012), “Handbook of Environmental Degradation of Materials”, New York: Elsevier.
[17] P. L. Fauchais, V. R. J. Heberlein, M. Boulos (2014), “Thermal Spray Fundamentals From Powder to Part”, Springer: London, pp. 17-72.
[18] Y. J. Zhang, X. F. Sun, H. R. Guan, Z. Q. Hu, (2002), “1050 °C isothermal oxidation behavior of detonation gun sprayed NiCrAlY coating”, Surface and Coating Technology 161 302–305.
[19] P. L. Ke, Q. M. Wang, J. Gong, C. Sun, Y. C. Zhou, (2006), “Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2–8Y2O3”, Materials Science and Engineering: A, 435–436 228–236.
[20] D. R. Clarke, M. Oechsner, N. P. Padture, (2012), “Thermal-barrier coatings for more efficient gas-turbine engines”, MRS Bulletin 37 891-898.
[21] A. G. Evans, D. R. Mumm, J. W. Hutchinson, G. H. Meier, F. S. Pettit, (2001), “Mechanisms controlling the durability of thermal barrier coatings” Progress in Materials Science, 46 505–553.
[22] J. H. Kim, M. C. Kim, C. G. Park, Surf. Coat. Techn. 168 (2003) 275–280.

[23] Y. J. Zhang, X. F. Sun, Y. C. Zhang, T. Jin, C. G. Deng, H. R. Guan, Z. Q. Hua, Mater. Sci. Eng. A. 360 (2003) 65–69.
Published
2016-07-25
How to Cite
[1]
A. Karaoğlanlı, “MICROSTRUCTURE CHARACTERISTICS OF DETONATION GUN SPRAYED CoNiCrAlY COATINGS”, JAST, vol. 9, no. 2, pp. 47-53, Jul. 2016.
Section
Articles