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

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 paintin...

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Detalles Bibliográficos
Autores principales:	Tomachuk, C., Di Sarli, Alejandro Ramón, Elsner, Cecilia Inés
Formato:	Objeto de conferencia
Lenguaje:	Inglés
Publicado:	2011
Materias:	Ingeniería Química Corrosion Impedance electrochemical Green technologies Conversion treatment Electrogalvanized steel
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/118980
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-118980
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ingeniería Química Corrosion Impedance electrochemical Green technologies Conversion treatment Electrogalvanized steel
spellingShingle	Ingeniería Química Corrosion Impedance electrochemical Green technologies Conversion treatment Electrogalvanized steel Tomachuk, C. Di Sarli, Alejandro Ramón Elsner, Cecilia Inés Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
topic_facet	Ingeniería Química Corrosion Impedance electrochemical Green technologies Conversion treatment Electrogalvanized steel
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.
format	Objeto de conferencia Objeto de conferencia
author	Tomachuk, C. Di Sarli, Alejandro Ramón Elsner, Cecilia Inés
author_facet	Tomachuk, C. Di Sarli, Alejandro Ramón Elsner, Cecilia Inés
author_sort	Tomachuk, C.
title	Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products
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
publishDate	2011
url	http://sedici.unlp.edu.ar/handle/10915/118980
work_keys_str_mv	AT tomachukc corrosionperformanceofelectrogalvanizessteeltreatmentwithcriiibasedproducts AT disarlialejandroramon corrosionperformanceofelectrogalvanizessteeltreatmentwithcriiibasedproducts AT elsnerceciliaines corrosionperformanceofelectrogalvanizessteeltreatmentwithcriiibasedproducts
bdutipo_str	Repositorios
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Corrosion performance of electrogalvanizes steel treatment with Cr (III)-based products

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