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Thermal Shock Experiment and Simulation of Ceramic/Metal Gradient Thermal Barrier Coating

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Abstract:

A thermal shock experiment is designed to explore the thermal shock properties of ceramic/metal gradient thermal barrier coating. The specimens are heated up by oxygen-acetylene flame and cooled by water spray. The experiment procedure includes two stages, heating the specimen from the initial temperature 30°C for 40s, and then cooling for 20s. The heat transfer and the associated thermal stresses produced during the thermal shock procedure are simulated by finite element method. Experimental results indicated that the specimen of gradient coating behaves better in thermal shock experiments, which agree with the results of simulation.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1818-1822

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1818

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Online since:

April 2007

Authors:

Jin Sheng Xiao, Kun Liu, Wen Hua Zhao, Wei Biao Fu

Keywords:

Finite Element, Functionally Graded Material (FGM), Thermal Barrier Coating (TBC), Thermal Shock

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] J. Xiao: Research on Ceramic/Metal Gradient Thermal Barrier Coatings, PhD thesis, Tsinghua University, Beijing, China, (1998).

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[2] W. Fu, Y. Zhang, Q. Wang: Combustion (High Education Publication, Beijing 1989).

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[3] P. Fsuchais: J. Thermal Sprayed Technology Vol. 1 (1995), p.3.

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