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Sintering Kinetics of Plasma-Sprayed Zirconia TBCs

Sintering Kinetics of Plasma-Sprayed Zirconia TBCs
Sintering Kinetics of Plasma-Sprayed Zirconia TBCs
A model of the sintering exhibited by EB-PVD TBCs, based on principles of free energy minimization, was recently published by Hutchinson et al. In the current paper, this approach is applied to sintering of plasma-sprayed TBCs and comparisons are made with experimental results. Predictions of through-thickness shrinkage and changing pore surface area are compared with experimental data obtained by dilatometry and BET analysis respectively. The sensitivity of the predictions to initial pore architecture and material properties are assessed. The model can be used to predict the evolution of contact area between overlying splats. This is in turn related to the through-thickness thermal conductivity, using a previously-developed analytical model.
Sintering, Plasma-Sprayed Thermal Barrier Coatings, Modelling, Variational Principle, Diffusion
434-439
Cipitria, A.
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Golosnoy, I.O.
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Clyne, T.W.
00678bf7-17de-46e8-9b35-bf1ca73bce9b
Marple, B.R.
557588b3-3884-49aa-8174-05ef48ddec0a
Hyland, M.M.
7b9d2be7-6dfd-473e-90a0-159455f1bac7
Lau, Y.-C.
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Li, C.-J.
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Lima, R.S.
a3f54a59-5844-4feb-822f-1f3b9d603d40
Montavon, G.
67e9044e-251d-47dc-8aa9-5242ebb578f8
Cipitria, A.
53f2ee50-b925-41f3-a195-ecb46fce2c01
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Clyne, T.W.
00678bf7-17de-46e8-9b35-bf1ca73bce9b
Marple, B.R.
557588b3-3884-49aa-8174-05ef48ddec0a
Hyland, M.M.
7b9d2be7-6dfd-473e-90a0-159455f1bac7
Lau, Y.-C.
0bc58e0b-e6d9-4318-8344-610ea1d6fb3f
Li, C.-J.
b15a460e-2984-4227-8c71-341883cf51c9
Lima, R.S.
a3f54a59-5844-4feb-822f-1f3b9d603d40
Montavon, G.
67e9044e-251d-47dc-8aa9-5242ebb578f8

Cipitria, A., Golosnoy, I.O. and Clyne, T.W. (2007) Sintering Kinetics of Plasma-Sprayed Zirconia TBCs. Marple, B.R., Hyland, M.M., Lau, Y.-C., Li, C.-J., Lima, R.S. and Montavon, G. (eds.) 2007 International Thermal Spray Conference, China. 14 - 16 May 2007. pp. 434-439 .

Record type: Conference or Workshop Item (Paper)

Abstract

A model of the sintering exhibited by EB-PVD TBCs, based on principles of free energy minimization, was recently published by Hutchinson et al. In the current paper, this approach is applied to sintering of plasma-sprayed TBCs and comparisons are made with experimental results. Predictions of through-thickness shrinkage and changing pore surface area are compared with experimental data obtained by dilatometry and BET analysis respectively. The sensitivity of the predictions to initial pore architecture and material properties are assessed. The model can be used to predict the evolution of contact area between overlying splats. This is in turn related to the through-thickness thermal conductivity, using a previously-developed analytical model.

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More information

Published date: 14 May 2007
Additional Information: Event Dates: May 14-16, 2007
Venue - Dates: 2007 International Thermal Spray Conference, China, 2007-05-14 - 2007-05-16
Keywords: Sintering, Plasma-Sprayed Thermal Barrier Coatings, Modelling, Variational Principle, Diffusion
Organisations: EEE

Identifiers

Local EPrints ID: 264633
URI: https://eprints.soton.ac.uk/id/eprint/264633
PURE UUID: e23e2353-533a-4338-bff4-6cf6bd811e6a

Catalogue record

Date deposited: 03 Oct 2007
Last modified: 26 Feb 2019 17:32

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Contributors

Author: A. Cipitria
Author: I.O. Golosnoy
Author: T.W. Clyne
Editor: B.R. Marple
Editor: M.M. Hyland
Editor: Y.-C. Lau
Editor: C.-J. Li
Editor: R.S. Lima
Editor: G. Montavon

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