A Comparative Study of Two-Layer NiAl Bond Coat TBC and its Failure Mechanism

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Abstract:

Thermal barrier coatings with one-layered/ two-layered NiAl bond coat were produced by electron beam physical vapor deposition (EB-PVD). Compared to the TBC with one-layered bond coat, the TBC with two-layered bond coat improved the thermal cycling resistance significantly. The failure mechanism of the two-layer NiAl bond coat TBC was investigated in this paper.

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Key Engineering Materials (Volumes 336-338)

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1770-1772

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April 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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