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Properties and Performance of High-Purity Thermal Barrier Coatings

Properties and Performance of High-Purity Thermal Barrier Coatings
Properties and Performance of High-Purity Thermal Barrier Coatings
It has been found that reducing the level of impurity oxides (particularly SiO2 and Al2O3) in 7YSZ, from about 0.2 wt% to below 0.1 wt% raises the sintering resistance and the phase stability of plasma-sprayed coatings. The implications for the usage of these coatings at elevated temperatures are examined. It is concluded that using relatively high-purity powder of this type is likely to confer substantial benefits in terms of the thermomechanical stability of the coatings under service conditions.
impurities, phase stability, plasma-sprayed thermal barrier coatings, sintering, thermal conductivity, thermal cyclic life, young’s modulus
1059-9630
804-808
Xie, L.
eb0f012c-02b1-4819-87e9-1ecf04c5a23e
Dorfman, M.R.
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Cipitria, A.
53f2ee50-b925-41f3-a195-ecb46fce2c01
Paul, S.
83953eee-4704-4a37-a39a-3f885b22af28
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Clyne, T.W.
00678bf7-17de-46e8-9b35-bf1ca73bce9b
Xie, L.
eb0f012c-02b1-4819-87e9-1ecf04c5a23e
Dorfman, M.R.
7e6d5a68-da64-4dd5-a04f-6ec0a757fe66
Cipitria, A.
53f2ee50-b925-41f3-a195-ecb46fce2c01
Paul, S.
83953eee-4704-4a37-a39a-3f885b22af28
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Clyne, T.W.
00678bf7-17de-46e8-9b35-bf1ca73bce9b

Xie, L., Dorfman, M.R., Cipitria, A., Paul, S., Golosnoy, I.O. and Clyne, T.W. (2007) Properties and Performance of High-Purity Thermal Barrier Coatings. Journal of Thermal Spray Technology, 16 (5-6), 804-808. (doi:10.1007/s11666-007-9079-7).

Record type: Article

Abstract

It has been found that reducing the level of impurity oxides (particularly SiO2 and Al2O3) in 7YSZ, from about 0.2 wt% to below 0.1 wt% raises the sintering resistance and the phase stability of plasma-sprayed coatings. The implications for the usage of these coatings at elevated temperatures are examined. It is concluded that using relatively high-purity powder of this type is likely to confer substantial benefits in terms of the thermomechanical stability of the coatings under service conditions.

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Published date: December 2007
Keywords: impurities, phase stability, plasma-sprayed thermal barrier coatings, sintering, thermal conductivity, thermal cyclic life, young’s modulus
Organisations: EEE

Identifiers

Local EPrints ID: 265161
URI: http://eprints.soton.ac.uk/id/eprint/265161
ISSN: 1059-9630
PURE UUID: 256199ee-b79f-4c64-b599-627655225cbe

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Date deposited: 07 Feb 2008 11:56
Last modified: 02 Dec 2019 21:03

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Contributors

Author: L. Xie
Author: M.R. Dorfman
Author: A. Cipitria
Author: S. Paul
Author: I.O. Golosnoy
Author: T.W. Clyne

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