A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions

Autores
Vásquez Moll, Victor Dennis; Salvarezza, Roberto Carlos; Videla, Héctor A.; Arvia, Alejandro Jorge
Año de publicación
1984
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The localized corrosion of mild steel in alkaline solutions containing a salt with a sulphurcontaining anion (sodium sulphate, sodium sulphite, sodium thiosulphate, potassium thiocyanate and sodium sulphide) is studied by using potentiostatic and potentiodynamic techniques complemented with scanning electron microscopy. Alkaline solutions containing one of those salts produce pitting of mild steel at potential values more positive than those of the active-passive transition of iron in base. In the presence of either thiocyanate or thiosulphate anion iron pitting takes place through sulphide formation which reacts at the electrode surface yielding poorly protective ferrous sulphide. At potential more positive than the breakdown potential the kinetic behaviour fits a competitive surface reaction mechanism involving the formation of the passive film and the nucleation and growth of a ferrous sulphide salt layer. The proposed reaction model reproduces the corresponding experimental current-transients.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Corrosion
Mild steel
Alkaline solutions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/118386
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/118386
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anionsVásquez Moll, Victor DennisSalvarezza, Roberto CarlosVidela, Héctor A.Arvia, Alejandro JorgeCiencias ExactasQuímicaCorrosionMild steelAlkaline solutionsThe localized corrosion of mild steel in alkaline solutions containing a salt with a sulphurcontaining anion (sodium sulphate, sodium sulphite, sodium thiosulphate, potassium thiocyanate and sodium sulphide) is studied by using potentiostatic and potentiodynamic techniques complemented with scanning electron microscopy. Alkaline solutions containing one of those salts produce pitting of mild steel at potential values more positive than those of the active-passive transition of iron in base. In the presence of either thiocyanate or thiosulphate anion iron pitting takes place through sulphide formation which reacts at the electrode surface yielding poorly protective ferrous sulphide. At potential more positive than the breakdown potential the kinetic behaviour fits a competitive surface reaction mechanism involving the formation of the passive film and the nucleation and growth of a ferrous sulphide salt layer. The proposed reaction model reproduces the corresponding experimental current-transients.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1984info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf751-767http://sedici.unlp.edu.ar/handle/10915/118386enginfo:eu-repo/semantics/altIdentifier/issn/0010-938Xinfo: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:UNLP2025-10-15T11:19:41Zoai:sedici.unlp.edu.ar:10915/118386Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:19:42.048SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
title A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
spellingShingle A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
Vásquez Moll, Victor Dennis
Ciencias Exactas
Química
Corrosion
Mild steel
Alkaline solutions
title_short A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
title_full A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
title_fullStr A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
title_full_unstemmed A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
title_sort A comparative pitting corrosion study of mild steel in different alkaline solutions containing salts with sulphur-containing anions
dc.creator.none.fl_str_mv Vásquez Moll, Victor Dennis
Salvarezza, Roberto Carlos
Videla, Héctor A.
Arvia, Alejandro Jorge
author Vásquez Moll, Victor Dennis
author_facet Vásquez Moll, Victor Dennis
Salvarezza, Roberto Carlos
Videla, Héctor A.
Arvia, Alejandro Jorge
author_role author
author2 Salvarezza, Roberto Carlos
Videla, Héctor A.
Arvia, Alejandro Jorge
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Corrosion
Mild steel
Alkaline solutions
topic Ciencias Exactas
Química
Corrosion
Mild steel
Alkaline solutions
dc.description.none.fl_txt_mv The localized corrosion of mild steel in alkaline solutions containing a salt with a sulphurcontaining anion (sodium sulphate, sodium sulphite, sodium thiosulphate, potassium thiocyanate and sodium sulphide) is studied by using potentiostatic and potentiodynamic techniques complemented with scanning electron microscopy. Alkaline solutions containing one of those salts produce pitting of mild steel at potential values more positive than those of the active-passive transition of iron in base. In the presence of either thiocyanate or thiosulphate anion iron pitting takes place through sulphide formation which reacts at the electrode surface yielding poorly protective ferrous sulphide. At potential more positive than the breakdown potential the kinetic behaviour fits a competitive surface reaction mechanism involving the formation of the passive film and the nucleation and growth of a ferrous sulphide salt layer. The proposed reaction model reproduces the corresponding experimental current-transients.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The localized corrosion of mild steel in alkaline solutions containing a salt with a sulphurcontaining anion (sodium sulphate, sodium sulphite, sodium thiosulphate, potassium thiocyanate and sodium sulphide) is studied by using potentiostatic and potentiodynamic techniques complemented with scanning electron microscopy. Alkaline solutions containing one of those salts produce pitting of mild steel at potential values more positive than those of the active-passive transition of iron in base. In the presence of either thiocyanate or thiosulphate anion iron pitting takes place through sulphide formation which reacts at the electrode surface yielding poorly protective ferrous sulphide. At potential more positive than the breakdown potential the kinetic behaviour fits a competitive surface reaction mechanism involving the formation of the passive film and the nucleation and growth of a ferrous sulphide salt layer. The proposed reaction model reproduces the corresponding experimental current-transients.
publishDate 1984
dc.date.none.fl_str_mv 1984
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/118386
url http://sedici.unlp.edu.ar/handle/10915/118386
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0010-938X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
751-767
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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