The AA7075–CS1018 Galvanic Couple under Evaporating Droplets
The galvanic corrosion behavior of the AA7075–CS1018 couple was examined in dynamic electrolytes using the ZRA technique. A modified electrochemical setup was developed to support the use of thin-film gel and liquid electrolytes on metallic surfaces. This allowed the collection of chemical informati...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-03-01
|
| Series: | Corrosion and Materials Degradation |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-5558/5/1/5 |
| _version_ | 1797241597115498496 |
|---|---|
| author | Marvin Montoya Juan Genesca Rodrigo Montoya |
| author_facet | Marvin Montoya Juan Genesca Rodrigo Montoya |
| author_sort | Marvin Montoya |
| collection | DOAJ |
| description | The galvanic corrosion behavior of the AA7075–CS1018 couple was examined in dynamic electrolytes using the ZRA technique. A modified electrochemical setup was developed to support the use of thin-film gel and liquid electrolytes on metallic surfaces. This allowed the collection of chemical information, left behind by the liquid electrolyte during evaporation, through a thin-film gel. The analysis of the gel electrolyte film confirmed the acidification on AA7075 and the alkalinization on CS1018 but also offered novel insights on their dependence on the galvanic current. The galvanic current was proportional to the initial NaCl concentration in the range of 0.01 to 0.06 M. However, due to continuous evaporation, the NaCl concentration increased, limiting oxygen diffusion and decreasing the galvanic current, especially for electrolytes exceeding 0.06 M. The galvanic current was determined by considering the dynamic evolution (caused by the evaporation of the electrolyte film) of both the thickness of the electrolyte and its concentration. |
| first_indexed | 2024-04-24T18:25:51Z |
| format | Article |
| id | doaj.art-973978b5e9b64ce6a715cabc7f6b8eef |
| institution | Directory Open Access Journal |
| issn | 2624-5558 |
| language | English |
| last_indexed | 2024-04-24T18:25:51Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj.art-973978b5e9b64ce6a715cabc7f6b8eef2024-03-27T13:31:45ZengMDPI AGCorrosion and Materials Degradation2624-55582024-03-01519210810.3390/cmd5010005The AA7075–CS1018 Galvanic Couple under Evaporating DropletsMarvin Montoya0Juan Genesca1Rodrigo Montoya2Unidad de Investigación y Tecnología Aplicadas de la UNAM (UNITA), Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Apodaca 66628, MexicoUnidad de Investigación y Tecnología Aplicadas de la UNAM (UNITA), Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Apodaca 66628, MexicoUnidad de Investigación y Tecnología Aplicadas de la UNAM (UNITA), Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Apodaca 66628, MexicoThe galvanic corrosion behavior of the AA7075–CS1018 couple was examined in dynamic electrolytes using the ZRA technique. A modified electrochemical setup was developed to support the use of thin-film gel and liquid electrolytes on metallic surfaces. This allowed the collection of chemical information, left behind by the liquid electrolyte during evaporation, through a thin-film gel. The analysis of the gel electrolyte film confirmed the acidification on AA7075 and the alkalinization on CS1018 but also offered novel insights on their dependence on the galvanic current. The galvanic current was proportional to the initial NaCl concentration in the range of 0.01 to 0.06 M. However, due to continuous evaporation, the NaCl concentration increased, limiting oxygen diffusion and decreasing the galvanic current, especially for electrolytes exceeding 0.06 M. The galvanic current was determined by considering the dynamic evolution (caused by the evaporation of the electrolyte film) of both the thickness of the electrolyte and its concentration.https://www.mdpi.com/2624-5558/5/1/5galvanic corrosionAA7075–CS1018 coupledynamic electrolytesagar gel electrolyteZRA technique |
| spellingShingle | Marvin Montoya Juan Genesca Rodrigo Montoya The AA7075–CS1018 Galvanic Couple under Evaporating Droplets Corrosion and Materials Degradation galvanic corrosion AA7075–CS1018 couple dynamic electrolytes agar gel electrolyte ZRA technique |
| title | The AA7075–CS1018 Galvanic Couple under Evaporating Droplets |
| title_full | The AA7075–CS1018 Galvanic Couple under Evaporating Droplets |
| title_fullStr | The AA7075–CS1018 Galvanic Couple under Evaporating Droplets |
| title_full_unstemmed | The AA7075–CS1018 Galvanic Couple under Evaporating Droplets |
| title_short | The AA7075–CS1018 Galvanic Couple under Evaporating Droplets |
| title_sort | aa7075 cs1018 galvanic couple under evaporating droplets |
| topic | galvanic corrosion AA7075–CS1018 couple dynamic electrolytes agar gel electrolyte ZRA technique |
| url | https://www.mdpi.com/2624-5558/5/1/5 |
| work_keys_str_mv | AT marvinmontoya theaa7075cs1018galvaniccoupleunderevaporatingdroplets AT juangenesca theaa7075cs1018galvaniccoupleunderevaporatingdroplets AT rodrigomontoya theaa7075cs1018galvaniccoupleunderevaporatingdroplets AT marvinmontoya aa7075cs1018galvaniccoupleunderevaporatingdroplets AT juangenesca aa7075cs1018galvaniccoupleunderevaporatingdroplets AT rodrigomontoya aa7075cs1018galvaniccoupleunderevaporatingdroplets |