A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel

The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium (Cr6+) compounds have widely been used to formulate conversion layers providing better anticorrosive protection as well as anchorage properties to p...

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Detalles Bibliográficos
Autores: Di Sarli, Alejandro Ramón, Culcasi, J. D., Tomachuk, C. R., Elsner, Cecilia Ines, Ferreira Jr., J. M., Costa, Isolda
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/11180
Acceso en línea:http://hdl.handle.net/11336/11180
Access Level:acceso abierto
Palabra clave:Corrosion
Electrochemical Properties
Coatings
Sem
Edxs
Xps
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
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repository_id_str
spelling A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steelDi Sarli, Alejandro RamónCulcasi, J. D.Tomachuk, C. R.Elsner, Cecilia InesFerreira Jr., J. M.Costa, Isolda CorrosionElectrochemical PropertiesCoatingsSemEdxsXpshttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium (Cr6+) compounds have widely been used to formulate conversion layers providing better anticorrosive protection as well as anchorage properties to painting systems. However, taking into account that they are produced using hazardous chemical compounds, the development of alternative and “green” technologies with equivalent protective performance is a paramount purpose of many R&D laboratories working around the world. In the present paper, the corrosion behavior of industrially electrogalvanized steel subjected to a Cr3+ + Co2+-based passivation treatment was studied. The experimental work involved electrochemical impedance spectroscopy (EIS) measurements and polarization curves in a 0.1 mol/L Na2SO4 solution, surface microstructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS and XPS. The most commonly observed failures on the Cr6+ treated samples were attributed to microstructural features of the substrate that were not adequately healed by the Cr6+ passivation treatment.Fil: Di Sarli, Alejandro Ramón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Tecnología de Pinturas (i); ArgentinaFil: Culcasi, J. D.. Universidad Nacional de La Plata. Facultad de Ingenieria; ArgentinaFil: Tomachuk, C. R.. Universidade de Sao Paulo; BrasilFil: Elsner, Cecilia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Tecnología de Pinturas (i); Argentina. Universidad Nacional de La Plata. Facultad de Ingenieria; ArgentinaFil: Ferreira Jr., J. M.. Energy and Nuclear Research Institute; BrasilFil: Costa, Isolda . Energy and Nuclear Research Institute; BrasilElsevier Science Sa2014-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11180Di Sarli, Alejandro Ramón; Culcasi, J. D.; Tomachuk, C. R.; Elsner, Cecilia Ines; Ferreira Jr., J. M.; et al.; A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel; Elsevier Science Sa; Surface And Coatings Technology; 258; 11-2014; 426-4360257-8972enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.surfcoat.2014.08.057info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0257897214007671info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:58:30Zoai:ri.conicet.gov.ar:11336/11180instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:58:31.016CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
title A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
spellingShingle A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
Di Sarli, Alejandro Ramón
Corrosion
Electrochemical Properties
Coatings
Sem
Edxs
Xps
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
title_short A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
title_full A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
title_fullStr A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
title_full_unstemmed A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
title_sort A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel
dc.creator.none.fl_str_mv Di Sarli, Alejandro Ramón
Culcasi, J. D.
Tomachuk, C. R.
Elsner, Cecilia Ines
Ferreira Jr., J. M.
Costa, Isolda
author Di Sarli, Alejandro Ramón
author_facet Di Sarli, Alejandro Ramón
Culcasi, J. D.
Tomachuk, C. R.
Elsner, Cecilia Ines
Ferreira Jr., J. M.
Costa, Isolda
author_role author
author2 Culcasi, J. D.
Tomachuk, C. R.
Elsner, Cecilia Ines
Ferreira Jr., J. M.
Costa, Isolda
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Corrosion
Electrochemical Properties
Coatings
Sem
Edxs
Xps
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
topic Corrosion
Electrochemical Properties
Coatings
Sem
Edxs
Xps
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
description The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium (Cr6+) compounds have widely been used to formulate conversion layers providing better anticorrosive protection as well as anchorage properties to painting systems. However, taking into account that they are produced using hazardous chemical compounds, the development of alternative and “green” technologies with equivalent protective performance is a paramount purpose of many R&D laboratories working around the world. In the present paper, the corrosion behavior of industrially electrogalvanized steel subjected to a Cr3+ + Co2+-based passivation treatment was studied. The experimental work involved electrochemical impedance spectroscopy (EIS) measurements and polarization curves in a 0.1 mol/L Na2SO4 solution, surface microstructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS and XPS. The most commonly observed failures on the Cr6+ treated samples were attributed to microstructural features of the substrate that were not adequately healed by the Cr6+ passivation treatment.
publishDate 2014
dc.date.none.fl_str_mv 2014-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/11180
Di Sarli, Alejandro Ramón; Culcasi, J. D.; Tomachuk, C. R.; Elsner, Cecilia Ines; Ferreira Jr., J. M.; et al.; A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel; Elsevier Science Sa; Surface And Coatings Technology; 258; 11-2014; 426-436
0257-8972
url http://hdl.handle.net/11336/11180
identifier_str_mv Di Sarli, Alejandro Ramón; Culcasi, J. D.; Tomachuk, C. R.; Elsner, Cecilia Ines; Ferreira Jr., J. M.; et al.; A conversion layer based on trivalent chromium and cobalt for the corrosion protection of electrogalvanized steel; Elsevier Science Sa; Surface And Coatings Technology; 258; 11-2014; 426-436
0257-8972
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.surfcoat.2014.08.057
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0257897214007671
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,811543

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