Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants

The new generation of concentrated solar power (CSP) plants to be developed presents a great challenge related to the increase in maximum operating temperature since molten salt CSP technologies require alternative salt chemistries such as chloride. The cathodic protection strategy involves the addi...

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Detalles Bibliográficos
Autores: Fernández, Ángel G., Cabeza, Luisa F.
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/68855
Acceso en línea:https://doi.org/10.3390/app10113724
http://hdl.handle.net/10459.1/68855
Access Level:acceso abierto
Palabra clave:Thermal energy storage (TES)
Concentrated solar power (CSP)
Corrosion mitigation
Chloride molten salt
Cathodic protection
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spelling Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power PlantsFernández, Ángel G.Cabeza, Luisa F.Thermal energy storage (TES)Concentrated solar power (CSP)Corrosion mitigationChloride molten saltCathodic protectionThe new generation of concentrated solar power (CSP) plants to be developed presents a great challenge related to the increase in maximum operating temperature since molten salt CSP technologies require alternative salt chemistries such as chloride. The cathodic protection strategy involves the addition of a sacrificial metal to prevent corrosion of the alloy tested as container material in a CSP plant. In this paper, aluminum (Al) metal was analyzed as a corrosion inhibitor in OCT and HR224 alloys, obtaining corrosion rates of 4.37 and 0.27 mm/y, respectively. It has been confirmed that the use of Al metal can reduce the anodic current which is directly related to the corrosion rate. The formation of protective alumina scales (Al2O3) was assessed by scanning electron microscopy (SEM) and X‐ray diffraction (XRD), confirming the corrosion model results from electrochemical impedance spectroscopy monitoring tests.Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska‐Curie grant No 712949 (TECNIOspring PLUS) and from the Agency for Business Competitiveness of the Government of Catalonia. This work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España (RTI2018‐093849‐B‐C31 ‐ MCIU/AEI/FEDER, UE). This work was partially funded by the Ministerio de Ciencia, Innovación y Universidades ‐ AgencHia Estatal de Investigación (AEI, RED2018‐102431‐T). This work is partially supported by ICREA under the ICREA Academia program. Acknowledgments: The authors would like to thank the Catalan Government for the quality accreditation given to their research group (GREiA 2017 SGR 1537).MDPI2020info:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.3390/app10113724http://hdl.handle.net/10459.1/68855reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-093849-B-C31Reproducció del document publicat a https://doi.org/10.3390/app10113724Applied Sciences, 2020, vol. 10, núm. 11, p. 3724-1-3724-10info:eu-repo/grantAgreement/EC/H2020/712949cc-by (c) Ángel G. Fernández, Luisa F. Cabeza, 2020info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/688552026-06-24T12:42:17Z
dc.title.none.fl_str_mv Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
title Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
spellingShingle Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
Fernández, Ángel G.
Thermal energy storage (TES)
Concentrated solar power (CSP)
Corrosion mitigation
Chloride molten salt
Cathodic protection
title_short Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
title_full Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
title_fullStr Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
title_full_unstemmed Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
title_sort Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants
dc.creator.none.fl_str_mv Fernández, Ángel G.
Cabeza, Luisa F.
author Fernández, Ángel G.
author_facet Fernández, Ángel G.
Cabeza, Luisa F.
author_role author
author2 Cabeza, Luisa F.
author2_role author
dc.subject.none.fl_str_mv Thermal energy storage (TES)
Concentrated solar power (CSP)
Corrosion mitigation
Chloride molten salt
Cathodic protection
topic Thermal energy storage (TES)
Concentrated solar power (CSP)
Corrosion mitigation
Chloride molten salt
Cathodic protection
description The new generation of concentrated solar power (CSP) plants to be developed presents a great challenge related to the increase in maximum operating temperature since molten salt CSP technologies require alternative salt chemistries such as chloride. The cathodic protection strategy involves the addition of a sacrificial metal to prevent corrosion of the alloy tested as container material in a CSP plant. In this paper, aluminum (Al) metal was analyzed as a corrosion inhibitor in OCT and HR224 alloys, obtaining corrosion rates of 4.37 and 0.27 mm/y, respectively. It has been confirmed that the use of Al metal can reduce the anodic current which is directly related to the corrosion rate. The formation of protective alumina scales (Al2O3) was assessed by scanning electron microscopy (SEM) and X‐ray diffraction (XRD), confirming the corrosion model results from electrochemical impedance spectroscopy monitoring tests.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.3390/app10113724
http://hdl.handle.net/10459.1/68855
url https://doi.org/10.3390/app10113724
http://hdl.handle.net/10459.1/68855
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-093849-B-C31
Reproducció del document publicat a https://doi.org/10.3390/app10113724
Applied Sciences, 2020, vol. 10, núm. 11, p. 3724-1-3724-10
info:eu-repo/grantAgreement/EC/H2020/712949
dc.rights.none.fl_str_mv cc-by (c) Ángel G. Fernández, Luisa F. Cabeza, 2020
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Ángel G. Fernández, Luisa F. Cabeza, 2020
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv MDPI
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dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
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