Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel

Autores
Roselli, Sol Natacha; Bellotti, Natalia; Deyá, Marta Cecilia; Revuelta, Mariana Valeria; Del Amo, Delia Beatriz; Romagnoli, Roberto
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A wide variety of inhibitive pigments is now being offered as possible alternatives to chromate and lead compounds for painted metals protection. Unfortunately, the most wide spread of these substitute pigments, zinc phosphate, has, at present, raised some environmental concern because phosphate causes the eutrophication of water courses and zinc itself is toxic. The aim of this research was to study the anticorrosive performance of a mixture consisting of zinc phosphate, modified zeolite and clay (bentonite) in order to diminish phosphate content in paints. The zeolite and the clay were exchanged with La(III) ions, as inorganic green inhibitor. In the first step, the anticorrosion protection by La(III) ions in solution was assessed by electrochemical tests. In the second step, an epoxy-polyamide paint formulated with the pigment mixture applied on galvanized panels was studied by salt spray test and electrochemical noise measurements (ENM). The results showed that it was possible to replace part of the zinc phosphate content in the paint with the exchanged zeolite and the clay.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
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:10915/95571
Acceder
id SEDICI_0d093f14c43b66392abace09b1b9fe5b
oai_identifier_str oai:sedici.unlp.edu.ar:10915/95571
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steelRoselli, Sol NatachaBellotti, NataliaDeyá, Marta CeciliaRevuelta, Mariana ValeriaDel Amo, Delia BeatrizRomagnoli, RobertoIngeniería QuímicaExchanged pigmentsCorrosionAnticorrosive paintsElectrochemical noise measurementsRare earthsA wide variety of inhibitive pigments is now being offered as possible alternatives to chromate and lead compounds for painted metals protection. Unfortunately, the most wide spread of these substitute pigments, zinc phosphate, has, at present, raised some environmental concern because phosphate causes the eutrophication of water courses and zinc itself is toxic. The aim of this research was to study the anticorrosive performance of a mixture consisting of zinc phosphate, modified zeolite and clay (bentonite) in order to diminish phosphate content in paints. The zeolite and the clay were exchanged with La(III) ions, as inorganic green inhibitor. In the first step, the anticorrosion protection by La(III) ions in solution was assessed by electrochemical tests. In the second step, an epoxy-polyamide paint formulated with the pigment mixture applied on galvanized panels was studied by salt spray test and electrochemical noise measurements (ENM). The results showed that it was possible to replace part of the zinc phosphate content in the paint with the exchanged zeolite and the clay.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/pdf352-359http://sedici.unlp.edu.ar/handle/10915/95571enginfo:eu-repo/semantics/altIdentifier/issn/1002-0721info:eu-repo/semantics/altIdentifier/doi/10.1016/S1002-0721(14)60078-8info: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:UNLP2025-09-29T11:20:36Zoai:sedici.unlp.edu.ar:10915/95571Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:36.972SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
title Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
spellingShingle Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
Roselli, Sol Natacha
Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
title_short Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
title_full Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
title_fullStr Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
title_full_unstemmed Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
title_sort Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
dc.creator.none.fl_str_mv Roselli, Sol Natacha
Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
author Roselli, Sol Natacha
author_facet Roselli, Sol Natacha
Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
author_role author
author2 Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
topic Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
dc.description.none.fl_txt_mv A wide variety of inhibitive pigments is now being offered as possible alternatives to chromate and lead compounds for painted metals protection. Unfortunately, the most wide spread of these substitute pigments, zinc phosphate, has, at present, raised some environmental concern because phosphate causes the eutrophication of water courses and zinc itself is toxic. The aim of this research was to study the anticorrosive performance of a mixture consisting of zinc phosphate, modified zeolite and clay (bentonite) in order to diminish phosphate content in paints. The zeolite and the clay were exchanged with La(III) ions, as inorganic green inhibitor. In the first step, the anticorrosion protection by La(III) ions in solution was assessed by electrochemical tests. In the second step, an epoxy-polyamide paint formulated with the pigment mixture applied on galvanized panels was studied by salt spray test and electrochemical noise measurements (ENM). The results showed that it was possible to replace part of the zinc phosphate content in the paint with the exchanged zeolite and the clay.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description A wide variety of inhibitive pigments is now being offered as possible alternatives to chromate and lead compounds for painted metals protection. Unfortunately, the most wide spread of these substitute pigments, zinc phosphate, has, at present, raised some environmental concern because phosphate causes the eutrophication of water courses and zinc itself is toxic. The aim of this research was to study the anticorrosive performance of a mixture consisting of zinc phosphate, modified zeolite and clay (bentonite) in order to diminish phosphate content in paints. The zeolite and the clay were exchanged with La(III) ions, as inorganic green inhibitor. In the first step, the anticorrosion protection by La(III) ions in solution was assessed by electrochemical tests. In the second step, an epoxy-polyamide paint formulated with the pigment mixture applied on galvanized panels was studied by salt spray test and electrochemical noise measurements (ENM). The results showed that it was possible to replace part of the zinc phosphate content in the paint with the exchanged zeolite and the clay.
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/10915/95571
url http://sedici.unlp.edu.ar/handle/10915/95571
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1002-0721
info:eu-repo/semantics/altIdentifier/doi/10.1016/S1002-0721(14)60078-8
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
352-359
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
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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score 13.070432

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