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A comprehensive study on hot corrosion resistance of NiCoCrAlYTa and NiCrAl thermal-sprayed coatings for CSP applications

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dc.contributor.authorAristu Ojer, Daniel
dc.contributor.authorBerlanga Labari, Carlos
dc.contributor.authorAlberro, Mikel
dc.contributor.authorRández Diago, Xabier
dc.contributor.authorFernández, Ángel G.
dc.contributor.departmentIngenieríaes_ES
dc.contributor.departmentIngeniaritzaeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.date.accessioned2024-04-26T17:22:26Z
dc.date.available2024-04-26T17:22:26Z
dc.date.issued2023
dc.date.updated2024-04-26T16:47:13Z
dc.description.abstractThe new generation of concentrated solar power (CSP) plants could be able to work at temperatures up 650 °C and carbonates molten salts are one of the main candidates to be used as thermal energy storage (TES) materials. Molten salt corrosion has been defined as one of the main issues and the technology demands more resistance alloys and innovative coatings. In this study, the assessment of hot corrosion resistance for NiCoCrAlYTa and NiCrAl thermal-sprayed coatings has been undertaken, tested on a ternary eutectic mixture (Li2CO3-Na2CO3-K2CO3) at a temperature of 650 °C. Electrochemical impedance spectroscopy and linear polarization resistance tests were used to evaluate the behaviour of the coatings but the obtained results reveal high values of corrosion rates accompanied by the formation of cracks. This unsatisfactory performance of the coatings, analysed by scanning electron microscopy and x-ray diffraction, can be attributed to a combination of different factors such as porosity, internal material stresses and thermal diffusion phenomena. As a result, it is concluded that further research is necessary to explore new coating application techniques.en
dc.description.sponsorshipDr. Angel G. Fernández wants to acknowledgement the financial support from RyC 2020-28787-I funded by MCIN/AEI/10.13039/501100011033 and ESF “Investing in your future”.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAristu, D., Berlanga-Labari, C., Alberro, M., Rández, X., Fernández, A. G. (2023) A comprehensive study on hot corrosion resistance of NiCoCrAlYTa and NiCrAl thermal-sprayed coatings for CSP applications. Journal of Energy Storage, 74, 1-13. https://doi.org/10.1016/j.est.2023.109346.en
dc.identifier.doi10.1016/j.est.2023.109346
dc.identifier.issn2352-152X
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/48020
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofJournal of Energy Storage, 74 Part A, (2023), 109346en
dc.relation.publisherversionhttps://doi.org/10.1016/j.est.2023.109346
dc.rights© 2023 The Authors. This is an open access article under the CC BY-NC-ND license.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCarbonate molten saltsen
dc.subjectConcentrated solar poweren
dc.subjectHot corrosionen
dc.subjectThermal-sprayed coatingsen
dc.titleA comprehensive study on hot corrosion resistance of NiCoCrAlYTa and NiCrAl thermal-sprayed coatings for CSP applicationsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
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relation.isAuthorOfPublication.latestForDiscoverydda98d71-b4db-4289-a0bb-e50f7aea96bf

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