Kinetics of the spontaneous dissolution of iron in concentrated ionic media
- Autores
- Podestá, José J.; Arvia, Alejandro Jorge
- Año de publicación
- 1965
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log icorr/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
Polycrystalline iron
Dissolution - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/122079
Ver los metadatos del registro completo
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Kinetics of the spontaneous dissolution of iron in concentrated ionic mediaPodestá, José J.Arvia, Alejandro JorgeCiencias ExactasQuímicaPolycrystalline ironDissolutionThe kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1965-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf159-169http://sedici.unlp.edu.ar/handle/10915/122079enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0013468665870165info:eu-repo/semantics/altIdentifier/issn/0013-4686info:eu-repo/semantics/altIdentifier/doi/10.1016/0013-4686(65)87016-5info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:20:53Zoai:sedici.unlp.edu.ar:10915/122079Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:20:53.377SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| title |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| spellingShingle |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media Podestá, José J. Ciencias Exactas Química Polycrystalline iron Dissolution |
| title_short |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| title_full |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| title_fullStr |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| title_full_unstemmed |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| title_sort |
Kinetics of the spontaneous dissolution of iron in concentrated ionic media |
| dc.creator.none.fl_str_mv |
Podestá, José J. Arvia, Alejandro Jorge |
| author |
Podestá, José J. |
| author_facet |
Podestá, José J. Arvia, Alejandro Jorge |
| author_role |
author |
| author2 |
Arvia, Alejandro Jorge |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química Polycrystalline iron Dissolution |
| topic |
Ciencias Exactas Química Polycrystalline iron Dissolution |
| dc.description.none.fl_txt_mv |
The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| description |
The kinetics of the dissolution of polycrystalline iron in acid solutions has been studied. Perchloric acid in sodium perchlorate, hydrochloric acid in sodium chloride and nitric acid in sodium nitrate solutions were used, covering the range of pH between 0 and 6 at temperatures from 40 to 70°C. The rate of dissolution was followed by recording the activity of hydrogen ion in the solution, the corrosion potential being constant during the run. The kinetic constant for hydrogen-ion disappearance was used to calculate the corrosion current-density assuming that hydrogen-ion discharge on an iron surface follows a Tafel equation with a slope of 2·3(2RT/F). For sodium perchlorate solutions the corrosion current increases with pH (in the range 1–5) with δ log i<sub>corr</sub>/δpH = −1. For sodium chloride solutions the slope is close to −0·50. In the same range of pH the corrosion rate is greater in the order ClO4−, Cl−, NO3−. The results are interpreted in terms of recent information about the kinetics of the iron electrode. |
| publishDate |
1965 |
| dc.date.none.fl_str_mv |
1965-02 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/122079 |
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http://sedici.unlp.edu.ar/handle/10915/122079 |
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eng |
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eng |
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openAccess |
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