Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet

Autores
Di Sarli, Alejandro Ramón; Elsner, Cecilia Inés; Palomino, L.E.M.; Tomachuk, Célia Regina
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Chromate conversion treatments have been widely used due to their excellent corrosion resistance properties; however, their use is increasingly restricted because of the highly toxic chromic acid solutions required, with consequent effluent disposal and ecological problems. The removal of these toxic chemicals is considered a priority within most of the developed countries. In this work, the corrosion resistance of different alternative pretreatments applied on electrogalvanised steel sheet: 1) Cr(III) and Zr complexes layer, 2) Ce(III) layer, 3) Ce(III)/Ce(IV) double layer, 4) Cr(VI) chromating was investigated, and its results compared with those from the tests performed using bare electrogalvanized steel sheets as a substrate. These samples were exposed to aerated 0.05 mol/L NaCl or 0.1 mol/L Na2SO4 solutions. The electrochemical behavior of samples was studied by electrochemical techniques. For three days of immersion in the solution test, the experimental results have shown that, compared with the Cr(VI) protective properties, the Cr(III) + Zr complex layer presented similar performance. Even though the initial corrosion resistance was offered by the Ce(III) and Ce(VI)/Ce(III) conversion coatings was relatively good, it quickly decreased as a function of the exposure time.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Ingeniería en Materiales
Pre-treatments
Conversion coatings
Corrosión
EIS
Electrogalvanised steel
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/119304

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spelling Corrosion Performance of Conversion Treatments for Electrogalvanised Steel SheetDi Sarli, Alejandro RamónElsner, Cecilia InésPalomino, L.E.M.Tomachuk, Célia ReginaIngeniería en MaterialesPre-treatmentsConversion coatingsCorrosiónEISElectrogalvanised steelChromate conversion treatments have been widely used due to their excellent corrosion resistance properties; however, their use is increasingly restricted because of the highly toxic chromic acid solutions required, with consequent effluent disposal and ecological problems. The removal of these toxic chemicals is considered a priority within most of the developed countries. In this work, the corrosion resistance of different alternative pretreatments applied on electrogalvanised steel sheet: 1) Cr(III) and Zr complexes layer, 2) Ce(III) layer, 3) Ce(III)/Ce(IV) double layer, 4) Cr(VI) chromating was investigated, and its results compared with those from the tests performed using bare electrogalvanized steel sheets as a substrate. These samples were exposed to aerated 0.05 mol/L NaCl or 0.1 mol/L Na2SO4 solutions. The electrochemical behavior of samples was studied by electrochemical techniques. For three days of immersion in the solution test, the experimental results have shown that, compared with the Cr(VI) protective properties, the Cr(III) + Zr complex layer presented similar performance. Even though the initial corrosion resistance was offered by the Ce(III) and Ce(VI)/Ce(III) conversion coatings was relatively good, it quickly decreased as a function of the exposure time.Centro de Investigación y Desarrollo en Tecnología de Pinturas2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf307-329http://sedici.unlp.edu.ar/handle/10915/119304enginfo:eu-repo/semantics/altIdentifier/issn/2327-4085info:eu-repo/semantics/altIdentifier/issn/2327-4077info:eu-repo/semantics/altIdentifier/doi/10.4236/jmmce.2019.75022info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:09Zoai:sedici.unlp.edu.ar:10915/119304Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:09.853SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
title Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
spellingShingle Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
Di Sarli, Alejandro Ramón
Ingeniería en Materiales
Pre-treatments
Conversion coatings
Corrosión
EIS
Electrogalvanised steel
title_short Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
title_full Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
title_fullStr Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
title_full_unstemmed Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
title_sort Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
dc.creator.none.fl_str_mv Di Sarli, Alejandro Ramón
Elsner, Cecilia Inés
Palomino, L.E.M.
Tomachuk, Célia Regina
author Di Sarli, Alejandro Ramón
author_facet Di Sarli, Alejandro Ramón
Elsner, Cecilia Inés
Palomino, L.E.M.
Tomachuk, Célia Regina
author_role author
author2 Elsner, Cecilia Inés
Palomino, L.E.M.
Tomachuk, Célia Regina
author2_role author
author
author
dc.subject.none.fl_str_mv Ingeniería en Materiales
Pre-treatments
Conversion coatings
Corrosión
EIS
Electrogalvanised steel
topic Ingeniería en Materiales
Pre-treatments
Conversion coatings
Corrosión
EIS
Electrogalvanised steel
dc.description.none.fl_txt_mv Chromate conversion treatments have been widely used due to their excellent corrosion resistance properties; however, their use is increasingly restricted because of the highly toxic chromic acid solutions required, with consequent effluent disposal and ecological problems. The removal of these toxic chemicals is considered a priority within most of the developed countries. In this work, the corrosion resistance of different alternative pretreatments applied on electrogalvanised steel sheet: 1) Cr(III) and Zr complexes layer, 2) Ce(III) layer, 3) Ce(III)/Ce(IV) double layer, 4) Cr(VI) chromating was investigated, and its results compared with those from the tests performed using bare electrogalvanized steel sheets as a substrate. These samples were exposed to aerated 0.05 mol/L NaCl or 0.1 mol/L Na2SO4 solutions. The electrochemical behavior of samples was studied by electrochemical techniques. For three days of immersion in the solution test, the experimental results have shown that, compared with the Cr(VI) protective properties, the Cr(III) + Zr complex layer presented similar performance. Even though the initial corrosion resistance was offered by the Ce(III) and Ce(VI)/Ce(III) conversion coatings was relatively good, it quickly decreased as a function of the exposure time.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description Chromate conversion treatments have been widely used due to their excellent corrosion resistance properties; however, their use is increasingly restricted because of the highly toxic chromic acid solutions required, with consequent effluent disposal and ecological problems. The removal of these toxic chemicals is considered a priority within most of the developed countries. In this work, the corrosion resistance of different alternative pretreatments applied on electrogalvanised steel sheet: 1) Cr(III) and Zr complexes layer, 2) Ce(III) layer, 3) Ce(III)/Ce(IV) double layer, 4) Cr(VI) chromating was investigated, and its results compared with those from the tests performed using bare electrogalvanized steel sheets as a substrate. These samples were exposed to aerated 0.05 mol/L NaCl or 0.1 mol/L Na2SO4 solutions. The electrochemical behavior of samples was studied by electrochemical techniques. For three days of immersion in the solution test, the experimental results have shown that, compared with the Cr(VI) protective properties, the Cr(III) + Zr complex layer presented similar performance. Even though the initial corrosion resistance was offered by the Ce(III) and Ce(VI)/Ce(III) conversion coatings was relatively good, it quickly decreased as a function of the exposure time.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/119304
url http://sedici.unlp.edu.ar/handle/10915/119304
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2327-4085
info:eu-repo/semantics/altIdentifier/issn/2327-4077
info:eu-repo/semantics/altIdentifier/doi/10.4236/jmmce.2019.75022
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
307-329
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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