Morphology and mechanical characteristics of some TBCs used for internal combustion valves
Marius PANȚURU, Daniela CHICET, Ovidiu MOCĂNIȚA, Marcelin BENCHEA. Corneliu MUNTEANUdownload PDF
Abstract. Three types of commercial powders have been deposited on the inlet and outlet valve plates in order to increase their lifetime, but especially the temperature in the combustion chamber. The layers were coated by atmospheric plasma spray method. The coatings morphology was analysed using two complementary methods: scanning electron microscopy and X-ray diffraction. The mechanical characteristics analysed were: microhardness, modulus of elasticity and adhesion / cohesion of coatings using scratch tests. Following those tests it was observed that the coatings are physically suited for further tests as thermal barrier coatings (TBC) on the valve discs of internal combustion engines.
TBC, Internal combustion valves, Morphology, Mechanical characteristics
Published online 11/5/2018, 9 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Marius PANȚURU, Daniela CHICET, Ovidiu MOCĂNIȚA, Marcelin BENCHEA. Corneliu MUNTEANU, ‘Morphology and mechanical characteristics of some TBCs used for internal combustion valves’, Materials Research Proceedings, Vol. 8, pp 192-200, 2018
The article was published as article 22 of the book Powder Metallurgy and Advanced Materials
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 S.M. Meier, D.K. Gupta, The Evolution of Thermal Barrier Coatings in Gas Turbine Engine Applications, J. Eng. Gas Turbine Power Trans. 116 (1994) 250–257. https://doi.org/10.1115/1.2906801
 J.R. Nicholls, Advances in coating design for high-performance gas turbines, MRS Bull., 28 (2003) 659–670. https://doi.org/10.1557/mrs2003.194
 I. Gurrappa, A. Sambasiva Rao, Thermal barrier coatings for enhanced efficiency of gas turbine engines, Surf. Coat. Technol. 201 (2006) 3016–3029. https://doi.org/10.1016/j.surfcoat.2006.06.026
 M.J. Pomeroy, Coatings for gas turbine materials and long term stability issues, Mater. Des. 26 (2005) 223–231. https://doi.org/10.1016/j.matdes.2004.02.005
 G.W. Goward, Progress in coatings for gas turbine airfoils, Surf. Coat. Technol. 108–109 (1998) 73–79. https://doi.org/10.1016/S0257-8972(98)00667-7
 I. Kvernes, E. Lugscheider, Thick Thermal Barrier Coatings for Diesel Engines, Surf. Eng. 11 (1995) 296–300. https://doi.org/10.1179/sur.19220.127.116.116
 D.W. Parker, Mater. Des. 13 (1992) 345–351. https://doi.org/10.1016/0261-3069(92)90005-3
 M. Ekström, A. Thibblin, A. Tjernberg, C. Blomqvist, S. Jonsson, Evaluation of internal thermal barrier coatings for exhaust manifolds, Surf. Coat. Technol. 272 (2015) 198–212. https://doi.org/10.1016/j.surfcoat.2015.04.005
 R.A. Miller, Oxidation‐Based Model for Thermal Barrier Coating Life, J. Am. Ceram. Soc. 67 (1984) 517–521. https://doi.org/10.1111/j.1151-2916.1984.tb19162.x
 K.A. Khor, Y.W. Gu, Thermal properties of plasma-sprayed functionally graded thermal barrier coatings, Thin Solid Films 372 (2000) 104–113. https://doi.org/10.1016/S0040-6090(00)01024-5
 C. Zhou, N. Wang, Z. Wang, S. Gong, H. Xu, Thermal cycling life and thermal diffusivity of a plasma-sprayed nanostructured thermal barrier coating, Scripta Mater. 51 (2004) 945–948. https://doi.org/10.1016/j.scriptamat.2004.07.024
 U. Schulz, C. Leyens, K. Fritscher, M. Peters, B. Saruhan-Brings, O. Lavigne, J.-M. Dorvaux, M. Poulain, R. Mévrel, M. Caliez, Some recent trends in research and technology of advanced thermal barrier coatings, Aerosp. Sci. Technol. 7 (2003) 73–80. https://doi.org/10.1016/S1270-9638(02)00003-2
 Davis J. R. (ed.) (2004) Handbook of Thermal Spray Technology (pub.) ASM Int. Materials Park OH, USA.