Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products

Autores
Tomachuk, C.; Di Sarli, Alejandro Ramón; Elsner, Cecilia Inés
Año de publicación
2011
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium compounds have widely been used to formulated 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 ingredients, the development of alternative and “green” thechnologies with equivalent protective performance is a paramount purpose of many R & D laboratories working around the world. In this work, the corrosion behavior of zinc coatings obtained from free-cyanide alkaline baths and latterly subjected to a Cr(III) based passivation treatment, with and without a sealing treatment, was studied. The experimental work involved electrochemical impedance spectroscopy measurements on 0.5 M Na2SO4 solution, surface microestructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS. The analysis and interpretation of all the data coming from these batteries of tests allowed inferring that both the Cr(III) based conversion treatment + adequate sealer provide a good corrosion resistance and, therefore, together with an adequate painting system, they could be a less pollution and less toxic alternative to the traditional chromate coatings.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Ingeniería Química
Corrosion
Impedance electrochemical
Green technologies
Conversion treatment
Electrogalvanized steel
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:10915/118980
Acceder
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network_name_str SEDICI (UNLP)
spelling Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based productsTomachuk, C.Di Sarli, Alejandro RamónElsner, Cecilia InésIngeniería QuímicaCorrosionImpedance electrochemicalGreen technologiesConversion treatmentElectrogalvanized steelThe corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium compounds have widely been used to formulated 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 ingredients, the development of alternative and “green” thechnologies with equivalent protective performance is a paramount purpose of many R & D laboratories working around the world. In this work, the corrosion behavior of zinc coatings obtained from free-cyanide alkaline baths and latterly subjected to a Cr(III) based passivation treatment, with and without a sealing treatment, was studied. The experimental work involved electrochemical impedance spectroscopy measurements on 0.5 M Na2SO4 solution, surface microestructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS. The analysis and interpretation of all the data coming from these batteries of tests allowed inferring that both the Cr(III) based conversion treatment + adequate sealer provide a good corrosion resistance and, therefore, together with an adequate painting system, they could be a less pollution and less toxic alternative to the traditional chromate coatings.Centro de Investigación y Desarrollo en Tecnología de Pinturas2011-11-20info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/118980enginfo: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:UNLP2025-10-22T17:08:51Zoai:sedici.unlp.edu.ar:10915/118980Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:08:51.546SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
title Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
spellingShingle Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
Tomachuk, C.
Ingeniería Química
Corrosion
Impedance electrochemical
Green technologies
Conversion treatment
Electrogalvanized steel
title_short Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
title_full Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
title_fullStr Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
title_full_unstemmed Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
title_sort Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
dc.creator.none.fl_str_mv Tomachuk, C.
Di Sarli, Alejandro Ramón
Elsner, Cecilia Inés
author Tomachuk, C.
author_facet Tomachuk, C.
Di Sarli, Alejandro Ramón
Elsner, Cecilia Inés
author_role author
author2 Di Sarli, Alejandro Ramón
Elsner, Cecilia Inés
author2_role author
author
dc.subject.none.fl_str_mv Ingeniería Química
Corrosion
Impedance electrochemical
Green technologies
Conversion treatment
Electrogalvanized steel
topic Ingeniería Química
Corrosion
Impedance electrochemical
Green technologies
Conversion treatment
Electrogalvanized steel
dc.description.none.fl_txt_mv The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium compounds have widely been used to formulated 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 ingredients, the development of alternative and “green” thechnologies with equivalent protective performance is a paramount purpose of many R & D laboratories working around the world. In this work, the corrosion behavior of zinc coatings obtained from free-cyanide alkaline baths and latterly subjected to a Cr(III) based passivation treatment, with and without a sealing treatment, was studied. The experimental work involved electrochemical impedance spectroscopy measurements on 0.5 M Na2SO4 solution, surface microestructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS. The analysis and interpretation of all the data coming from these batteries of tests allowed inferring that both the Cr(III) based conversion treatment + adequate sealer provide a good corrosion resistance and, therefore, together with an adequate painting system, they could be a less pollution and less toxic alternative to the traditional chromate coatings.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium compounds have widely been used to formulated 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 ingredients, the development of alternative and “green” thechnologies with equivalent protective performance is a paramount purpose of many R & D laboratories working around the world. In this work, the corrosion behavior of zinc coatings obtained from free-cyanide alkaline baths and latterly subjected to a Cr(III) based passivation treatment, with and without a sealing treatment, was studied. The experimental work involved electrochemical impedance spectroscopy measurements on 0.5 M Na2SO4 solution, surface microestructural and morphological characterization by electronic microscopy as well as chemical analysis by EDXS. The analysis and interpretation of all the data coming from these batteries of tests allowed inferring that both the Cr(III) based conversion treatment + adequate sealer provide a good corrosion resistance and, therefore, together with an adequate painting system, they could be a less pollution and less toxic alternative to the traditional chromate coatings.
publishDate 2011
dc.date.none.fl_str_mv 2011-11-20
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
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http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/118980
url http://sedici.unlp.edu.ar/handle/10915/118980
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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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
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instname_str Universidad Nacional de La Plata
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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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