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Effect of Ti Content on Microstructure and Dielectric Properties of Li and Ti Co-Doped NiO Thin Films
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Fabrication and Characterization of Ceramic/Metal Gradient Thermal Barrier Coating
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Fabrication and Characterization of Ceramic/Metal Gradient Thermal Barrier Coating

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Abstract:

Four Coating schemes and two substrate materials are designed to evaluate the characteristics of the ceramic/metal gradient thermal barrier coating. The gradient coating is successfully prepared by plasma spray with single torch and single feeder. The coating performance is evaluated by observing microstructure, measuring thermal shock resistance and thermal residual stress. The coating microstructure is observed by scanning electron microscope (SEM). Diffractive peaks for the gradient coating are got at different zone by X-ray spectroscopy (XRS). The thermal shock experiment shows that the thermal shock resistance property of the gradient coating is better than that of the non-gradient coating. The measurements of thermal residual stresses in different coating schemes are carried out by hole-drilling method, the results show that compressional stress presents on 1Cr18Ni9Ti substrate and tensile stress presents on 2Cr13 substrate.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

2643-2646

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.2643

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Online since:

April 2007

Authors:

Jin Sheng Xiao, Chun Zhi Hu, Wen Hua Zhao, Wei Biao Fu

Keywords:

Functionally Graded Material (FGM), Thermal Barrier Coating (TBC)

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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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