Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel

Autores
Tomachuk, Celia Regina; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hexavalent chromium-based passivation treatments have been successfully used as promoters of conversion coatings for many years. Their effectiveness is without question although there are many problems with regard to their environmental suitability. Hexavalent chromium compounds are carcinogenic and toxic. These problems have lead researchers to evaluate other potential systems, with lower toxicity, to ascertain if they can replace chromates as effective passivators. Researchers have proposed several alternative passivation treatments; these are processes based on molybdates, permanganates, titanates, rare earth metal and Cr3+ (considered to be non-carcinogenic) compounds. In this work, zinc coatings obtained from free-cyanide alkaline bath and submitted to a Cr3+ based passivation treatment with different colors were studied. The corrosion behavior was studied by polarization measurements and mainly by electrochemical impedance spectroscopy in 0.6 N NaCl solution. Morphological observations on the coatings surface were also performed. The results indicate that the green-colored Cr3+ passivated coatings have a good corrosion resistance followed by yellow and blue-colored passivation respectively. They could be a less polluting alternative to the traditional chromated coatings
Fil: Tomachuk, Celia Regina. Energy and Nuclear Research Institute, IPEN/CNEN-SP, CCT, Sao Paulo; Brasil
Fil: Di Sarli, Alejandro Ramón. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Elsner, Cecilia Ines. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Materia
ZINC
CONVERSION TREATMENT
IMPEDANCE SPECTROSCOPY
SALT SPRAY
CORROSION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/128249
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steelTomachuk, Celia ReginaDi Sarli, Alejandro RamónElsner, Cecilia InesZINCCONVERSION TREATMENTIMPEDANCE SPECTROSCOPYSALT SPRAYCORROSIONhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Hexavalent chromium-based passivation treatments have been successfully used as promoters of conversion coatings for many years. Their effectiveness is without question although there are many problems with regard to their environmental suitability. Hexavalent chromium compounds are carcinogenic and toxic. These problems have lead researchers to evaluate other potential systems, with lower toxicity, to ascertain if they can replace chromates as effective passivators. Researchers have proposed several alternative passivation treatments; these are processes based on molybdates, permanganates, titanates, rare earth metal and Cr3+ (considered to be non-carcinogenic) compounds. In this work, zinc coatings obtained from free-cyanide alkaline bath and submitted to a Cr3+ based passivation treatment with different colors were studied. The corrosion behavior was studied by polarization measurements and mainly by electrochemical impedance spectroscopy in 0.6 N NaCl solution. Morphological observations on the coatings surface were also performed. The results indicate that the green-colored Cr3+ passivated coatings have a good corrosion resistance followed by yellow and blue-colored passivation respectively. They could be a less polluting alternative to the traditional chromated coatingsFil: Tomachuk, Celia Regina. Energy and Nuclear Research Institute, IPEN/CNEN-SP, CCT, Sao Paulo; BrasilFil: Di Sarli, Alejandro Ramón. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Elsner, Cecilia Ines. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; ArgentinaScientific Research2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128249Tomachuk, Celia Regina; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel; Scientific Research; Materials Sciences and Applications; 1; 4; 3-2010; 202-2092150-850XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.SciRP.org/journal/msainfo:eu-repo/semantics/altIdentifier/doi/10.4236/msa.2010.14032info:eu-repo/semantics/altIdentifier/url/https://www.scirp.org/pdf/MSA20100400004_30875148.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:39:01Zoai:ri.conicet.gov.ar:11336/128249instacron: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:34982025-09-17 11:39:01.374CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
title Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
spellingShingle Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
Tomachuk, Celia Regina
ZINC
CONVERSION TREATMENT
IMPEDANCE SPECTROSCOPY
SALT SPRAY
CORROSION
title_short Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
title_full Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
title_fullStr Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
title_full_unstemmed Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
title_sort Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel
dc.creator.none.fl_str_mv Tomachuk, Celia Regina
Di Sarli, Alejandro Ramón
Elsner, Cecilia Ines
author Tomachuk, Celia Regina
author_facet Tomachuk, Celia Regina
Di Sarli, Alejandro Ramón
Elsner, Cecilia Ines
author_role author
author2 Di Sarli, Alejandro Ramón
Elsner, Cecilia Ines
author2_role author
author
dc.subject.none.fl_str_mv ZINC
CONVERSION TREATMENT
IMPEDANCE SPECTROSCOPY
SALT SPRAY
CORROSION
topic ZINC
CONVERSION TREATMENT
IMPEDANCE SPECTROSCOPY
SALT SPRAY
CORROSION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Hexavalent chromium-based passivation treatments have been successfully used as promoters of conversion coatings for many years. Their effectiveness is without question although there are many problems with regard to their environmental suitability. Hexavalent chromium compounds are carcinogenic and toxic. These problems have lead researchers to evaluate other potential systems, with lower toxicity, to ascertain if they can replace chromates as effective passivators. Researchers have proposed several alternative passivation treatments; these are processes based on molybdates, permanganates, titanates, rare earth metal and Cr3+ (considered to be non-carcinogenic) compounds. In this work, zinc coatings obtained from free-cyanide alkaline bath and submitted to a Cr3+ based passivation treatment with different colors were studied. The corrosion behavior was studied by polarization measurements and mainly by electrochemical impedance spectroscopy in 0.6 N NaCl solution. Morphological observations on the coatings surface were also performed. The results indicate that the green-colored Cr3+ passivated coatings have a good corrosion resistance followed by yellow and blue-colored passivation respectively. They could be a less polluting alternative to the traditional chromated coatings
Fil: Tomachuk, Celia Regina. Energy and Nuclear Research Institute, IPEN/CNEN-SP, CCT, Sao Paulo; Brasil
Fil: Di Sarli, Alejandro Ramón. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Elsner, Cecilia Ines. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
description Hexavalent chromium-based passivation treatments have been successfully used as promoters of conversion coatings for many years. Their effectiveness is without question although there are many problems with regard to their environmental suitability. Hexavalent chromium compounds are carcinogenic and toxic. These problems have lead researchers to evaluate other potential systems, with lower toxicity, to ascertain if they can replace chromates as effective passivators. Researchers have proposed several alternative passivation treatments; these are processes based on molybdates, permanganates, titanates, rare earth metal and Cr3+ (considered to be non-carcinogenic) compounds. In this work, zinc coatings obtained from free-cyanide alkaline bath and submitted to a Cr3+ based passivation treatment with different colors were studied. The corrosion behavior was studied by polarization measurements and mainly by electrochemical impedance spectroscopy in 0.6 N NaCl solution. Morphological observations on the coatings surface were also performed. The results indicate that the green-colored Cr3+ passivated coatings have a good corrosion resistance followed by yellow and blue-colored passivation respectively. They could be a less polluting alternative to the traditional chromated coatings
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/128249
Tomachuk, Celia Regina; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel; Scientific Research; Materials Sciences and Applications; 1; 4; 3-2010; 202-209
2150-850X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128249
identifier_str_mv Tomachuk, Celia Regina; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; Anti-corrosion performance of Cr+6-free passivating layers applied on electrogalvanized steel; Scientific Research; Materials Sciences and Applications; 1; 4; 3-2010; 202-209
2150-850X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.SciRP.org/journal/msa
info:eu-repo/semantics/altIdentifier/doi/10.4236/msa.2010.14032
info:eu-repo/semantics/altIdentifier/url/https://www.scirp.org/pdf/MSA20100400004_30875148.pdf
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
dc.publisher.none.fl_str_mv Scientific Research
publisher.none.fl_str_mv Scientific Research
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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 13.000565

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