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Vojnotehnički glasnik
2016, vol. 64, iss. 2, pp. 411-430
article language: English
document type: Original Scientific Paper
doi:10.5937/vojtehg64-9612

Creative Commons License 4.0
Properties of the ZrO2MgO/MgZrO3NiCr/NiCr triple-layer thermal barrier coating deposited by the atmospheric plasma spray process
IMTEL Institute, Belgrade

e-mail: miki@insimtel.com

Project

Micromechanical criteria of damage and fracture (MESTD - 174004)
Development of covering and core production technology based on local raw materials for manufacturing of special coated electrodes designed for steel arc welding (MESTD - 34016)

Abstract

This paper presents the results of the examinations of TBC - ZrO2MgO / MgZrO3NiCr / NiCr thermal barrier layers deposited by the plasma spray process at the atmospheric pressure on substrates of Al alloys. In order to obtain the structural and mechanical properties of layers, which will provide a good heat and abrasion protection of the tail elevators of aircraft J-22 when firing '.Lightning' and 'Thunder' rockets, the deposition of three powder types was performed on 0.6 mm thick Al alloy substrates. This study describes a procedure of using triple-layer TBC coatings as a good combination among many available ones, which gives a good compromise between thermal protection and resistance to abrasion for protecting aircraft tail elevators. The study is mainly based on the experimental approach. The evaluation of the mechanical properties of layers was done by the examination of microhardness by method HV0.3 and bond strength on the tensile machine. The structure of layers was examined by the method of light microscopy while the surface of ZrO2MgO ceramic layers was examined by the method of scanning electron microscopy (SEM).The thermal protection of TBC layers and resistance to abrasion were tested in the tunnel of the Military Technical Institute, Zarkovo. The obtained characteristics of the surface layers and the rocket firing simulations have proven the triple-layer system of TBC coatings reliable.

Keywords

References

*** (2012) Material Product Data Sheet, Metco 43F-NS Nickel - 20% Chromium Powders. Sulzer Metco, DSMTS-0109. O
*** (2012) Material Product Data Sheet, Metco 303NS-1 Magnesium Zirconate - Nickel Chromium Cermet Blends. Sulzer Metco, DSMTS-0070. O
*** (2002) Turbojet engine-standard practices manual. East Hartford, USA: Pratt-Whitney, Part No 58 5005
Boutz, M.M.R., Winnubst, A.J.A., Burggraaf, A.J. (1994) Yttria-ceria stabilized tetragonal zirconia polycrystals: Sintering, grain growth and grain boundary segregation. Journal of the European Ceramic Society, 13(2): 89-102
Brossard, S., Munroe, P.R., Tran, A.T.T., Hyland, M.M. (2010) Study of the microstructure of NiCr splats plasma sprayed on to stainless steel substrates by TEM. Surface and Coatings Technology, 204, 9-10, 1608-1615
Çelik, E., Avcı, E., Yılmaz, F. (1997) Evaluation of interface reactions in thermal barrier ceramic coatings. Surface and Coatings Technology, 97(1-3): 361-365
Chevalier, J., Gremillard, L., Virkar, A.V., Clarke, D.R. (2009) The Tetragonal-Monoclinic Transformation in Zirconia: Lessons Learned and Future Trends. Journal of the American Ceramic Society, 92(9): 1901-1920
Demirkıran, A.Ş., Avcı, E. (1999) Evaluation of functionally gradient coatings produced by plasma-spray technique. Surface and Coatings Technology, 116-119: 292-295
Garvie, R.C. (1970) Zirconium Dioxide and Some of Its Binary Systems. in: Alper, A.M [ed.] Refractory Materials, New York: Academic Press, str. 117-166
Garvie, R.C., Hannink, R.H., Pascoe, R.T. (1975) Ceramic steel?. Nature, 258(5537): 703-704
Guo, H., Yao, R., Zhpu, L. (2011) in: Xu H., Guo H. [ed.] Thermal barrier coatings, Cambridge: Woodhead Publishing Limited, pp. 161-174
Johner, G., Schweitzer, K.K. (1984) Thermal barrier coatings for jet engine improvement. Thin Solid Films, 119(3): 301-315
Li, C.-J., Ohmori, A. (2002) Relationships Between the Microstructure and Properties of Thermally Sprayed Deposits. Journal of Thermal Spray Technology, 11(3): 365-374
Miyamoto, Y., Kaysser, W.A., Rabin, B.H., Kawasaki, A., Ford, R.G. (1999) Functionally graded materials: Design, processing and applications. Kluwer Academic Publishers
Mrdak, M.R., Vencl, A., Nedeljkovic, B.D., Stanković, M. (2013) Influence of plasma spraying parameters on properties of thermal barrier coatings. Materials Science and Technology, 29(5): 559-567
Mrdak, M. (2013) Ispitivanje mehaničkih i strukturnih osobina prevlaka otpornih na eroziju i visoke temperature. in: SERBIATRIB ‘13, 13th International Conference on Tribology 15-17, Kragujevac, pp. 426-432
Mrdak, M., Rakin, M., Medjo, B., Bajić, N. (2015) Experimental study of insulating properties and behaviour of thermal barrier coating systems in thermo cyclic conditions. Materials & Design, 67: 337-343
Mrdak, M.R. (2015) Investigation of the influence of plasma spray sealing coatings on the effect of sealing the TV2 - 117A turbojet engine compressor. Vojnotehnički glasnik, vol. 63, br. 1, str. 32-55
Nicoll, A.R. (1984) The environment: High temperature oxidation and hot corrosion. in: CEI course on high temperature materials and coatings, 24-29. 06. Finland
Sulzer Metco (2000) Metco 210ns-1 Magnesium Zirconate Powder. Technical bulletin, 10-289