Effect of substrate temperature on the microstructure and properties of thick plasma-sprayed YSZ TBCs
Effect of substrate temperature on the microstructure and properties of thick plasma-sprayed YSZ TBCs
Thick (~1.2 mm) thermal barrier coatings (TBCs) consisting of YSZ were deposited by plasma spraying. Spraying parameters were varied in a controlled manner to produce different microstructures. The effect of substrate temperature on the microstructural features and subsequently on the Young’s modulus was investigated. In addition, the residual stresses in the coatings were estimated using a numerical model and they were related to the microstructural features observed. Results showed that crack segmentation density, residual stresses in the coatings and thus coating properties are strongly affected not only by the average substrate temperature during spraying but also the variations between the minimum and maximum substrate temperature.
Porosity, ZrO2, Residual stress, Microstructure, Thermal barrier coatings
2923-2929
Tsipas, S.A.
cea7cd1e-9b61-4784-8231-5063b53de887
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
15 August 2011
Tsipas, S.A.
cea7cd1e-9b61-4784-8231-5063b53de887
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Tsipas, S.A. and Golosnoy, I.O.
(2011)
Effect of substrate temperature on the microstructure and properties of thick plasma-sprayed YSZ TBCs.
Journal of the European Ceramic Society, 31 (15), .
(doi:10.1016/j.jeurceramsoc.2011.07.022).
Abstract
Thick (~1.2 mm) thermal barrier coatings (TBCs) consisting of YSZ were deposited by plasma spraying. Spraying parameters were varied in a controlled manner to produce different microstructures. The effect of substrate temperature on the microstructural features and subsequently on the Young’s modulus was investigated. In addition, the residual stresses in the coatings were estimated using a numerical model and they were related to the microstructural features observed. Results showed that crack segmentation density, residual stresses in the coatings and thus coating properties are strongly affected not only by the average substrate temperature during spraying but also the variations between the minimum and maximum substrate temperature.
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Published date: 15 August 2011
Keywords:
Porosity, ZrO2, Residual stress, Microstructure, Thermal barrier coatings
Organisations:
EEE
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Local EPrints ID: 272908
URI: http://eprints.soton.ac.uk/id/eprint/272908
ISSN: 0955-2219
PURE UUID: 93b687aa-366b-4938-8810-9494a6500c99
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Date deposited: 03 Oct 2011 16:53
Last modified: 14 Mar 2024 10:13
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Author:
S.A. Tsipas
Author:
I.O. Golosnoy
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