Behavior of two eco-compatible duplex systems used in the construction industry against corrosion

Autores
Seré, Pablo Ricardo; Deyá, Marta Cecilia; Elsner, Cecilia Inés; Di Sarli, Alejandro Ramón
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore, for aesthetics purposes and/or to prolong their expected or planned service life, they are painted designing each paint system as a function of the service conditions to which they will be subject to. The present work reports on a comparative study of two duplex systems: steel/metal coating/organic coating. In both cases, the chromate-based pretreatment was replaced by another one that features γmercaptopropyltrimethoxysilane (MTMO) as an active element. The organic coating used was a waterbased polyurethane. Behavior of this paint against corrosionwas assessed byexposing the samples in salt spray or humidity chambers, and monitoring its evolution by electrochemical impedance spectroscopy, visual observation, scanning electron microscopy and energy dispersive X-ray analysis. The results revealed that: MTMO was suitable for promoting adhesion both in HDGS and HDZAS; in humidity chamber, both duplex systems provided good protection; the presence of corrosion products of the base steel and paint blistering was detected in the HDGS/paint system seventy-two days after exposure; however,150 days after that, none of these effects were observed in the HDZAS/paint system; differences in behavior were significant in Salt spray chamber: speed of paint delamination from the mark done and the bulk of corrosion products generated was much higher in HDGS/paint system than in HDZAS/paint.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Ingeniería Química
Galvanized
Silane
Protection
Corrosion
Organic coating
Duplex system
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/94516
Acceder
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network_name_str SEDICI (UNLP)
spelling Behavior of two eco-compatible duplex systems used in the construction industry against corrosionSeré, Pablo RicardoDeyá, Marta CeciliaElsner, Cecilia InésDi Sarli, Alejandro RamónIngeniería QuímicaGalvanizedSilaneProtectionCorrosionOrganic coatingDuplex systemTwo types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore, for aesthetics purposes and/or to prolong their expected or planned service life, they are painted designing each paint system as a function of the service conditions to which they will be subject to. The present work reports on a comparative study of two duplex systems: steel/metal coating/organic coating. In both cases, the chromate-based pretreatment was replaced by another one that features γmercaptopropyltrimethoxysilane (MTMO) as an active element. The organic coating used was a waterbased polyurethane. Behavior of this paint against corrosionwas assessed byexposing the samples in salt spray or humidity chambers, and monitoring its evolution by electrochemical impedance spectroscopy, visual observation, scanning electron microscopy and energy dispersive X-ray analysis. The results revealed that: MTMO was suitable for promoting adhesion both in HDGS and HDZAS; in humidity chamber, both duplex systems provided good protection; the presence of corrosion products of the base steel and paint blistering was detected in the HDGS/paint system seventy-two days after exposure; however,150 days after that, none of these effects were observed in the HDZAS/paint system; differences in behavior were significant in Salt spray chamber: speed of paint delamination from the mark done and the bulk of corrosion products generated was much higher in HDGS/paint system than in HDZAS/paint.Centro de Investigación y Desarrollo en Tecnología de Pinturas2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/94516enginfo:eu-repo/semantics/altIdentifier/issn/0143-7496info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijadhadh.2013.12.019info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:11:35Zoai:sedici.unlp.edu.ar:10915/94516Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:11:35.25SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
title Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
spellingShingle Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
Seré, Pablo Ricardo
Ingeniería Química
Galvanized
Silane
Protection
Corrosion
Organic coating
Duplex system
title_short Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
title_full Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
title_fullStr Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
title_full_unstemmed Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
title_sort Behavior of two eco-compatible duplex systems used in the construction industry against corrosion
dc.creator.none.fl_str_mv Seré, Pablo Ricardo
Deyá, Marta Cecilia
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author Seré, Pablo Ricardo
author_facet Seré, Pablo Ricardo
Deyá, Marta Cecilia
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author_role author
author2 Deyá, Marta Cecilia
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author2_role author
author
author
dc.subject.none.fl_str_mv Ingeniería Química
Galvanized
Silane
Protection
Corrosion
Organic coating
Duplex system
topic Ingeniería Química
Galvanized
Silane
Protection
Corrosion
Organic coating
Duplex system
dc.description.none.fl_txt_mv Two types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore, for aesthetics purposes and/or to prolong their expected or planned service life, they are painted designing each paint system as a function of the service conditions to which they will be subject to. The present work reports on a comparative study of two duplex systems: steel/metal coating/organic coating. In both cases, the chromate-based pretreatment was replaced by another one that features γmercaptopropyltrimethoxysilane (MTMO) as an active element. The organic coating used was a waterbased polyurethane. Behavior of this paint against corrosionwas assessed byexposing the samples in salt spray or humidity chambers, and monitoring its evolution by electrochemical impedance spectroscopy, visual observation, scanning electron microscopy and energy dispersive X-ray analysis. The results revealed that: MTMO was suitable for promoting adhesion both in HDGS and HDZAS; in humidity chamber, both duplex systems provided good protection; the presence of corrosion products of the base steel and paint blistering was detected in the HDGS/paint system seventy-two days after exposure; however,150 days after that, none of these effects were observed in the HDZAS/paint system; differences in behavior were significant in Salt spray chamber: speed of paint delamination from the mark done and the bulk of corrosion products generated was much higher in HDGS/paint system than in HDZAS/paint.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description Two types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore, for aesthetics purposes and/or to prolong their expected or planned service life, they are painted designing each paint system as a function of the service conditions to which they will be subject to. The present work reports on a comparative study of two duplex systems: steel/metal coating/organic coating. In both cases, the chromate-based pretreatment was replaced by another one that features γmercaptopropyltrimethoxysilane (MTMO) as an active element. The organic coating used was a waterbased polyurethane. Behavior of this paint against corrosionwas assessed byexposing the samples in salt spray or humidity chambers, and monitoring its evolution by electrochemical impedance spectroscopy, visual observation, scanning electron microscopy and energy dispersive X-ray analysis. The results revealed that: MTMO was suitable for promoting adhesion both in HDGS and HDZAS; in humidity chamber, both duplex systems provided good protection; the presence of corrosion products of the base steel and paint blistering was detected in the HDGS/paint system seventy-two days after exposure; however,150 days after that, none of these effects were observed in the HDZAS/paint system; differences in behavior were significant in Salt spray chamber: speed of paint delamination from the mark done and the bulk of corrosion products generated was much higher in HDGS/paint system than in HDZAS/paint.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/94516
url http://sedici.unlp.edu.ar/handle/10915/94516
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0143-7496
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijadhadh.2013.12.019
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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