Inhibiting hot corrosion of molten Li2CO3-Na2CO3-K2CO3 salt through graphitization of construction materials for concentrated solar power


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Publication Details

Output type: Journal article

UM6P affiliated Publication?: No

Author list: Grosu Y., Anagnostopoulos A., Navarro M.E., Ding Y., Faik A.

Publisher: Elsevier

Publication year: 2020

Journal: Solar Energy Materials and Solar Cells (0927-0248)

Volume number: 215

ISSN: 0927-0248

URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85086745490&origin=inward


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Abstract

Next-generation concentrated solar power (CSP) plants are expected to work above the current temperature limit of 565 °C for the benefit of enhanced efficiency. This poses significant challenges in the construction materials, among others, in terms of corrosion. In this work, we investigate the spray-graphitization method to improve the compatibility of SS310 and SS347 with molten Li2CO3-Na2CO3-K2CO3 carbonate salt. Improved compatibility was observed due to the formation of protective carbonate or carbide layers on SS347 and SS310 surfaces, respectively. Detailed characterization of the corrosion products, including chemical reactions and wettability allowed the mechanism of anticorrosion protection to be proposed, which could be used for other construction materials in direct contact with high-temperature molten salts for next-generation CSP plants and beyond.


Keywords

Concentrated solar power, Corrosion, Molten salt


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Last updated on 2021-14-05 at 23:19