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...
| Autores: | ; |
|---|---|
| Tipo de documento: | 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 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Thermal energy storage (TES) Concentrated solar power (CSP) Corrosion mitigation Chloride molten salt Cathodic protection |
| _version_ | 1878729725638082560 |
|---|---|
| author | Fernández, Ángel G. |
| author2 | Cabeza, Luisa F. |
| author2_role | author |
| author_browse | Cabeza, Luisa F. Fernández, Ángel G. |
| author_facet | Fernández, Ángel G. Cabeza, Luisa F. |
| author_role | author |
| collection | Repositori Obert UdL |
| 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_0dbce37aad0116719f5dcf3cdc8df4e9 |
| institution | Universitat de Lleida (UdL) |
| instname_str | Universitat de Lleida (UdL) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:repositori.udl.cat:10459.1/68855 |
| publishDate | 2020 |
| publishDateSort | 2020 |
| publisher | MDPI |
| publisherStr | MDPI |
| reponame_str | Repositori Obert UdL |
| spelling | Cathodic Protection Using Aluminum Metal in Chloride Molten Salts as Thermal Energy Storage Material in Concentrating Solar Power Plants Fernández, Ángel G. Cabeza, Luisa F. Thermal energy storage (TES) Concentrated solar power (CSP) Corrosion mitigation Chloride molten salt Cathodic protection 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. 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). MDPI https://doi.org/10.3390/app10113724 http://hdl.handle.net/10459.1/68855 |
| 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 | 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_short | 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 |
| topic | Thermal energy storage (TES) Concentrated solar power (CSP) Corrosion mitigation Chloride molten salt Cathodic protection |
| topic_facet | Thermal energy storage (TES) Concentrated solar power (CSP) Corrosion mitigation Chloride molten salt Cathodic protection |
| url | https://doi.org/10.3390/app10113724 http://hdl.handle.net/10459.1/68855 |