Deposition, characterization and performance evaluation of ceramic coatings on metallic substrates for supercritical water-cooled reactors

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DOIResolve DOI: http://doi.org/10.1016/j.surfcoat.2010.12.017
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TypeArticle
Journal titleSurface&Coatings Technology
Volume205
Issue11
Pages35123519; # of pages: 8
SubjectCeramic coatings; Supercritical water-cooled reactors (SCWR); Gen IV; Plasma electrolytic oxidation; Spray pyrolysis; Protective coatings; Corrosion
AbstractA series of ceramic coatings have been prepared on P91 substrates by spray pyrolysis processes and on Zr–2.5Nb substrates by a plasma electrolytic oxidation process. Preliminary results show that coatings obtained with different solution compositions and procedures can reduce the oxidation weight gain of P91 samples by factors of 2–10 for exposure times up to 500 h in deaerated supercritical water at 500 °C and 25 MPa. Results also show that the weight gain of a P91 sample with an alumina (Al2O3) coating is about nine times less than that of uncoated P91 after exposures for 400 h in deaerated supercritical water at 650 °C and 25 MPa. These results indicate that the Al2O3 coating shows promising results for preventing oxidation of P91 under supercritical water conditions. The samples with ceramic coatings on Zr–2.5Nb substrates show marginally improved corrosion resistance compared to the bare substrates.
Publication date
LanguageEnglish
AffiliationNRC Institute for Fuel Cell Innovation; National Research Council Canada
Peer reviewedYes
NPARC number16925467
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Record identifier375bb4ea-e26a-4e78-afbb-c6f34e36dfc1
Record created2011-02-25
Record modified2016-05-09
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