The oxidation behavior of TBC with cold spray CoNiCrAlY bond coat

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DOIResolve DOI: http://doi.org/10.1007/s11666-010-9601-1
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TypeArticle
Journal titleJournal of Thermal Spray Technology
Volume20
Issue1-2
Pages132138; # of pages: 7
Subjectcold spray; CoNiCrAlY; cracking; oxidation; TBC; TGO growth; thermal spray
AbstractCold gas dynamic spray (CGDS) has been considered a potential technique to produce the metallic bond coat for TBC applications, because of its fast deposition rate and low deposition temperature. This article presents the influence of spray processes for bond coat, including air plasma spray, high velocity oxy-fuel, and in particular CGDS, on the oxidation performance of TBCs with a Co-32Ni-21Cr-8Al-0.5Y (wt.%) bond coat and an air plasma sprayed topcoat. Oxidation behavior of the TBCs was evaluated by examining the coating microstructural evolution, TGO growth behavior, and crack propagation during thermal exposure at 1050 °C. The relationship between the TGO growth and crack propagation will be discussed.
Publication date
LanguageEnglish
AffiliationNRC Institute for Aerospace Research; NRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number53897
NPARC number18375262
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Record identifier25e9b93c-2e62-4802-9fc2-c1d077a3f26f
Record created2011-08-04
Record modified2017-03-23
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