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Micro-Tribological Behavior of Boron Carbide Self-Mated Pairs
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Frictional Performance of Brake Pads against Al Metal Matrix Composites with Different Sizes of SiC Particles
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Effects of Pre-Oxide Layer Thickness on Thermal Cyclic Behavior of Thermal Barrier Coatings
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Effects of Pre-Oxide Layer Thickness on Thermal Cyclic Behavior of Thermal Barrier Coatings

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Abstract:

Conventional two-layered structure thermal barrier coatings (TBCs) with different pre-oxide layer thicknesses were produced by EB-PVD onto Ni-based superalloy. The pre-oxide layer with different thicknesses was formed after vacuum heat treatment for 2 hours and before ceramic deposition by heating the bond coat to 1323K in air for different times. It has been found that with pre-oxide layer thickness increasing from 1μm to 3.1μm, the growth rate of thermally grown oxide (TGO) increased during thermal cycling test and the thermal cyclic lifetime of TBCs decreased from 730hs to 400hs Two failure modes were observed for TBCs with different pre-oxide layer thicknesses and different TGO layer growth rates.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1746-1749

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1746

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Online since:

April 2007

Authors:

Dong Bo Zhang, Sheng Kai Gong, Hui Bin Xu

Keywords:

Bond Coat, Electron Beam Physical Vapor Deposition (EB PVD), Thermal Barrier Coating (TBC), Thermally Grown Oxide

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] X.F. Bi, H.B. Xu, S.K. Gong: Surf. Coat. Technol. Vol. 130(2000), p.122.

Google Scholar

[2] F. Jamarani, M. Korotkin: Surf. Coat. Technol. Vol. 54/55 (1992), p.58.

Google Scholar

[3] K.S. Fancey, A. Matthews: J. Vac. Sci. Technol. Vol. A4 (1986).

Google Scholar

[4] H.B. Xu, H.B. Guo, et al.: Surf. Coat. Technol. Vol. 130 (2000), p.133.

Google Scholar

[5] A.G. Evens, D.R. Mumm, J.W. Hutchinson, et al.: Prog. Mater. Sci. Vol. 46 (2001), p.505.

Google Scholar

[6] A. Rabiei, A.G. Evans: Acta Mater. Vol. 48 (2000), p.3963.

Google Scholar

[7] M. Koizumi, K. Urabe: Funct. Gradient Compos. Vol. 75 (1989), p.887.

Google Scholar