Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)

The corrosion behavior of hot dip galvanized steel (HDGS) pre-treated with mercaptopropyltrimethoxysilane and a commercial sulfur-bearing silane was studied. Electrochemical polarization, electrochemical impedance spectroscopy, and electrochemical noise tests showed that silane coatings have a corro...

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Autores principales: Seré, Pablo Ricardo, Deyá, Marta Cecilia, Egli, Walter Alfredo, Elsner, Cecilia Inés, Di Sarli, Alejandro Ramón
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ingeniería Química
Cyclic voltammetry
Electrochemical impedance spectroscopy
Metal coatings
Polymer coatings
Scanning electron microscopy
Zinc
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81573
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81573
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
Cyclic voltammetry
Electrochemical impedance spectroscopy
Metal coatings
Polymer coatings
Scanning electron microscopy
Zinc
spellingShingle Ingeniería Química
Cyclic voltammetry
Electrochemical impedance spectroscopy
Metal coatings
Polymer coatings
Scanning electron microscopy
Zinc
Seré, Pablo Ricardo
Deyá, Marta Cecilia
Egli, Walter Alfredo
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
topic_facet Ingeniería Química
Cyclic voltammetry
Electrochemical impedance spectroscopy
Metal coatings
Polymer coatings
Scanning electron microscopy
Zinc
description The corrosion behavior of hot dip galvanized steel (HDGS) pre-treated with mercaptopropyltrimethoxysilane and a commercial sulfur-bearing silane was studied. Electrochemical polarization, electrochemical impedance spectroscopy, and electrochemical noise tests showed that silane coatings have a corrosion protection performance similar to the usual hexavalent chromium HDGS passivation treatments. It is also evident that the silane films protect the zinc surface through the formation of an isolating barrier. Through voltamperometric studies it was possible to define an electrochemical porosity of the protective coatings. Based on copper sulfate tests and electrochemical porosity results the films protection capability was evaluated, showing that silane treatments have similar or even better protection performance than standard chromium passivation.
format Articulo
Articulo
author Seré, Pablo Ricardo
Deyá, Marta Cecilia
Egli, Walter Alfredo
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author_facet Seré, Pablo Ricardo
Deyá, Marta Cecilia
Egli, Walter Alfredo
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author_sort Seré, Pablo Ricardo
title Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
title_short Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
title_full Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
title_fullStr Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
title_full_unstemmed Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI)
title_sort protection of galvanized steel with silanes: its comparison with chromium (vi)
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/81573
work_keys_str_mv AT serepabloricardo protectionofgalvanizedsteelwithsilanesitscomparisonwithchromiumvi
AT deyamartacecilia protectionofgalvanizedsteelwithsilanesitscomparisonwithchromiumvi
AT egliwalteralfredo protectionofgalvanizedsteelwithsilanesitscomparisonwithchromiumvi
AT elsnerceciliaines protectionofgalvanizedsteelwithsilanesitscomparisonwithchromiumvi
AT disarlialejandroramon protectionofgalvanizedsteelwithsilanesitscomparisonwithchromiumvi
bdutipo_str Repositorios
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