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9. Corrosion behaviour of Y2O3–ZrO2 coatings on IN713LC in a LiCl–Li2O molten salt

Author

Cho, Soo-Haeng, Park, Byung-Heong, Hur, Jin-Mok, Lee, Han-Soo, Song, Kee-Chan, and Lee, Jong-Hyeon

Subjects
*ALLOYS, *CORROSION resistant materials, *METALLIC oxides, *FUSED salts, *HEAT resistant alloys, *THERMAL stresses, *METAL bonding, *LITHIUM, *CERAMIC materials
Abstract

Abstract: Hot corrosion studies were performed on superalloy specimens. The IN713LC superalloy were sprayed with an aluminized NiCrAlY-bond coat and then with an yttria–zirconia top coat. The bare superalloy reveals an obvious weight loss due to spalling of the scales by the rapid scale growth and thermal stress. The top coatings showed a much better hot corrosion resistance in the presence of LiCl–3 wt.% Li2O molten salt when compared with those of the bare superalloy and the aluminized bond coatings. These coatings have been found to be beneficial for increasing hot corrosion resistance of structural materials for lithium molten salts. [Copyright &y& Elsevier]

Published
2010
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