Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel

The effectiveness of Cr(VI)-based passivation treatments is well accepted but there are many problems with regard to their environmental suitability. Because these compounds are carcinogenic and toxic, eco-friendly systems capable of replacing them are being evaluated. In this work, the corrosion be...

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Detalles Bibliográficos
Autores principales: Tomachuk, C. R., Elsner, Cecilia Inés, Di Sarli, Alejandro Ramón, Ferraz, O. B.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Química
Conversion treatment
Corrosion
Green technologies
Impedance spectroscopy
Salt spray
Zinc
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81952
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81952
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Conversion treatment
Corrosion
Green technologies
Impedance spectroscopy
Salt spray
Zinc
spellingShingle Química
Conversion treatment
Corrosion
Green technologies
Impedance spectroscopy
Salt spray
Zinc
Tomachuk, C. R.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
Ferraz, O. B.
Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
topic_facet Química
Conversion treatment
Corrosion
Green technologies
Impedance spectroscopy
Salt spray
Zinc
description The effectiveness of Cr(VI)-based passivation treatments is well accepted but there are many problems with regard to their environmental suitability. Because these compounds are carcinogenic and toxic, eco-friendly systems capable of replacing them are being evaluated. In this work, the corrosion behavior in 0.5 M NaCl solution of zinc coatings deposited from a free-cyanide alkaline bath and treated with Cr3+ based passivation coatings were characterized through DC and EIS techniques. The salt spray test as well as studies of the surface structure and chemical composition were also performed. From these analyses it was inferred that (1) the greencolored Cr3+ passivated coatings provide better corrosion resistance than the yellow- and blue-colored coatings, and (2) together with an adequate painting system, they could be a less polluting and less toxic alternative to traditional chromate coatings.
format Articulo
Articulo
author Tomachuk, C. R.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
Ferraz, O. B.
author_facet Tomachuk, C. R.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
Ferraz, O. B.
author_sort Tomachuk, C. R.
title Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
title_short Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
title_full Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
title_fullStr Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
title_full_unstemmed Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel
title_sort morphology and corrosion resistance of cr(iii)-based conversion treatments for electrogalvanized steel
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/81952
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AT disarlialejandroramon morphologyandcorrosionresistanceofcriiibasedconversiontreatmentsforelectrogalvanizedsteel
AT ferrazob morphologyandcorrosionresistanceofcriiibasedconversiontreatmentsforelectrogalvanizedsteel
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