Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel

Ce-based conversion films have been assessed as alternatives for replacement of Cr6+-based films,which have been forbidden for their toxicity and carcinogenic properties. However, corrosion protection associated with chromate films is difficult to achieve by other surface treatments. Experimental re...

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Authors: Culcasi, José Daniel, Elsner, Cecilia Ines, Di Sarli, Alejandro Ramón, Palomino, Luis, Tomachuk, Celia Regina, Costa, Ilda
Format: article
Status:Published version
Publication Date:2014
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/33500
Online Access:http://hdl.handle.net/11336/33500
Access Level:Open access
Keyword:GALVANIZED STEEL
Ce-BASED CONVERSION FILMS
CORROSION
EIS
SEM
EDXS
XPS
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
id AR_386efdd1f4f0deb7293edd94fb2e4fee
oai_identifier_str oai:ri.conicet.gov.ar:11336/33500
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
title Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
spellingShingle Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
Culcasi, José Daniel
GALVANIZED STEEL
Ce-BASED CONVERSION FILMS
CORROSION
EIS
SEM
EDXS
XPS
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
title_short Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
title_full Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
title_fullStr Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
title_full_unstemmed Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
title_sort Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel
dc.creator.none.fl_str_mv Culcasi, José Daniel
Elsner, Cecilia Ines
Di Sarli, Alejandro Ramón
Palomino, Luis
Tomachuk, Celia Regina
Costa, Ilda
author Culcasi, José Daniel
author_facet Culcasi, José Daniel
Elsner, Cecilia Ines
Di Sarli, Alejandro Ramón
Palomino, Luis
Tomachuk, Celia Regina
Costa, Ilda
author_role author
author2 Elsner, Cecilia Ines
Di Sarli, Alejandro Ramón
Palomino, Luis
Tomachuk, Celia Regina
Costa, Ilda
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv GALVANIZED STEEL
Ce-BASED CONVERSION FILMS
CORROSION
EIS
SEM
EDXS
XPS
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
topic GALVANIZED STEEL
Ce-BASED CONVERSION FILMS
CORROSION
EIS
SEM
EDXS
XPS
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
description Ce-based conversion films have been assessed as alternatives for replacement of Cr6+-based films,which have been forbidden for their toxicity and carcinogenic properties. However, corrosion protection associated with chromate films is difficult to achieve by other surface treatments. Experimental results have revealed that to obtain the highly satisfactory results provided by chromate-based conversion coatings, it is necessary to improve the anticorrosive properties of the new chromium-free coatings. The present work deals with the effect of the oxidant concentration in the cerium-based conversion baths on the corrosion resistance of the films deposited on galvanized steel. Electrogalvanized steel sheets were exposed to cerium chloride-based baths with different concentrations of oxidant for a minute. The surface of the treated samples was analyzed by XPS and SEM-EDXS, while its corrosion resistance was investigated using electrochemical tests (EIS) conducted in a 0.05 M NaCl solution and the impedance spectra evolution analyzed as a function of the exposure time. The results showed a direct relationship between oxidant concentration and corrosion resistance. When the oxidant concentration rose from2mL.L-1 to 12mL.L-1, the corrosion resistance increased about 5 times, and this was attributed to the decrease in the Ce3+/Ce4+ relationship of the conversion film.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
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/11336/33500
Palomino, Luis; Culcasi, José Daniel; Tomachuk, Celia Regina; Costa, Ilda; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; et al.; Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel; Trade Science inc; Chemical Technology: An Indian Journal; 9; 3; 9-2014; 85-94
0974-7443
CONICET Digital
CONICET
url http://hdl.handle.net/11336/33500
identifier_str_mv Palomino, Luis; Culcasi, José Daniel; Tomachuk, Celia Regina; Costa, Ilda; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; et al.; Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel; Trade Science inc; Chemical Technology: An Indian Journal; 9; 3; 9-2014; 85-94
0974-7443
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.tsijournals.com/abstract/effect-of-oxidizing-concentration-on-the-corrosion-resistance-of-the-cerium-conversion-coating-on-galvanized-steel-1581.html
info:eu-repo/semantics/altIdentifier/url/http://www.tsijournals.com/articles/effect-of-oxidizing-concentration-on-the-corrosion-resistance-of-the-cerium-conversion-coating-on-galvanized-steel.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 Trade Science inc
publisher.none.fl_str_mv Trade Science inc
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
_version_ 1799195423605260288
spelling Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steelCulcasi, José DanielElsner, Cecilia InesDi Sarli, Alejandro RamónPalomino, LuisTomachuk, Celia ReginaCosta, IldaGALVANIZED STEELCe-BASED CONVERSION FILMSCORROSIONEISSEMEDXSXPShttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Ce-based conversion films have been assessed as alternatives for replacement of Cr6+-based films,which have been forbidden for their toxicity and carcinogenic properties. However, corrosion protection associated with chromate films is difficult to achieve by other surface treatments. Experimental results have revealed that to obtain the highly satisfactory results provided by chromate-based conversion coatings, it is necessary to improve the anticorrosive properties of the new chromium-free coatings. The present work deals with the effect of the oxidant concentration in the cerium-based conversion baths on the corrosion resistance of the films deposited on galvanized steel. Electrogalvanized steel sheets were exposed to cerium chloride-based baths with different concentrations of oxidant for a minute. The surface of the treated samples was analyzed by XPS and SEM-EDXS, while its corrosion resistance was investigated using electrochemical tests (EIS) conducted in a 0.05 M NaCl solution and the impedance spectra evolution analyzed as a function of the exposure time. The results showed a direct relationship between oxidant concentration and corrosion resistance. When the oxidant concentration rose from2mL.L-1 to 12mL.L-1, the corrosion resistance increased about 5 times, and this was attributed to the decrease in the Ce3+/Ce4+ relationship of the conversion film.Fil: Culcasi, José Daniel. Universidad Nacional de La Plata; ArgentinaFil: Elsner, Cecilia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Di Sarli, Alejandro Ramón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; ArgentinaFil: Palomino, Luis. Universidade de Sao Paulo; BrasilFil: Tomachuk, Celia Regina. Instituto de Investigaciones Energéticas y Nucleares. San Pablo; BrasilFil: Costa, Ilda. Instituto de Investigaciones Energéticas y Nucleares. San Pablo; BrasilTrade Science inc2014-09info: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/11336/33500Palomino, Luis; Culcasi, José Daniel; Tomachuk, Celia Regina; Costa, Ilda; Di Sarli, Alejandro Ramón; Elsner, Cecilia Ines; et al.; Effect of oxidizing concentration on the corrosion resistance of the cerium conversion coating on galvanized steel; Trade Science inc; Chemical Technology: An Indian Journal; 9; 3; 9-2014; 85-940974-7443CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.tsijournals.com/abstract/effect-of-oxidizing-concentration-on-the-corrosion-resistance-of-the-cerium-conversion-coating-on-galvanized-steel-1581.htmlinfo:eu-repo/semantics/altIdentifier/url/http://www.tsijournals.com/articles/effect-of-oxidizing-concentration-on-the-corrosion-resistance-of-the-cerium-conversion-coating-on-galvanized-steel.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 Técnicas2024-05-08T13:52:02Zoai:ri.conicet.gov.ar:11336/33500instacron: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 13:52:03.181CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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