The assessment of a smart anticorrosive coating by the electrochemical noise technique

Autores
Deyá, Marta Cecilia; Del Amo, Delia Beatriz; Spinelli, Enrique Mario; Romagnoli, Roberto
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Zinc phosphate and related compounds are convenient replacements for chromates. However, more eco-compatible pigments are being investigated. The objective of this research was to develop a modified zeolitic rock which is intended to replace phosphate pigments in anticorrosive paints. The modified zeolitic rock was obtained by grinding the rock followed with ionic exchange with molybdenyl ions. This “composite” has an intelligent behavior because molybdenum compounds are leached from the zeolite particle by corrodent species. The anticorrosive properties of this zeolitic rock were studied by electrochemical techniques, employing inhibitor suspensions, and formulating anticorrosive coatings. Coatings performance was evaluated by accelerated tests (humidity chamber and salt spray) and electrochemical noise measurements (ENM). Electrochemical noise data were analyzed in the time domain. The noise resistance (Rn) was compared, as far as possible, with the polarization resistance. It was demonstrated that zinc phosphate content could be reduced to one-third with respect to the recommended value in the literature. The electrochemical noise technique allowed to differentiate the anticorrosive performance of the different coatings formulated in this research.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
Materia
Ingeniería Química
Zinc phosphate
Zeolite
Molybdenum ions
Anticorrosive paints
Electrochemical noise
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:10915/98938
Acceder
id SEDICI_107227b6541fde3e0d68abf58f21985c
oai_identifier_str oai:sedici.unlp.edu.ar:10915/98938
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The assessment of a smart anticorrosive coating by the electrochemical noise techniqueDeyá, Marta CeciliaDel Amo, Delia BeatrizSpinelli, Enrique MarioRomagnoli, RobertoIngeniería QuímicaZinc phosphateZeoliteMolybdenum ionsAnticorrosive paintsElectrochemical noiseZinc phosphate and related compounds are convenient replacements for chromates. However, more eco-compatible pigments are being investigated. The objective of this research was to develop a modified zeolitic rock which is intended to replace phosphate pigments in anticorrosive paints. The modified zeolitic rock was obtained by grinding the rock followed with ionic exchange with molybdenyl ions. This “composite” has an intelligent behavior because molybdenum compounds are leached from the zeolite particle by corrodent species. The anticorrosive properties of this zeolitic rock were studied by electrochemical techniques, employing inhibitor suspensions, and formulating anticorrosive coatings. Coatings performance was evaluated by accelerated tests (humidity chamber and salt spray) and electrochemical noise measurements (ENM). Electrochemical noise data were analyzed in the time domain. The noise resistance (Rn) was compared, as far as possible, with the polarization resistance. It was demonstrated that zinc phosphate content could be reduced to one-third with respect to the recommended value in the literature. The electrochemical noise technique allowed to differentiate the anticorrosive performance of the different coatings formulated in this research.Centro de Investigación y Desarrollo en Tecnología de Pinturas2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf525-532http://sedici.unlp.edu.ar/handle/10915/98938enginfo:eu-repo/semantics/altIdentifier/issn/0300-9440info:eu-repo/semantics/altIdentifier/doi/10.1016/j.porgcoat.2012.09.014info: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:UNLP2025-10-22T17:02:29Zoai:sedici.unlp.edu.ar:10915/98938Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:02:30.183SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The assessment of a smart anticorrosive coating by the electrochemical noise technique
title The assessment of a smart anticorrosive coating by the electrochemical noise technique
spellingShingle The assessment of a smart anticorrosive coating by the electrochemical noise technique
Deyá, Marta Cecilia
Ingeniería Química
Zinc phosphate
Zeolite
Molybdenum ions
Anticorrosive paints
Electrochemical noise
title_short The assessment of a smart anticorrosive coating by the electrochemical noise technique
title_full The assessment of a smart anticorrosive coating by the electrochemical noise technique
title_fullStr The assessment of a smart anticorrosive coating by the electrochemical noise technique
title_full_unstemmed The assessment of a smart anticorrosive coating by the electrochemical noise technique
title_sort The assessment of a smart anticorrosive coating by the electrochemical noise technique
dc.creator.none.fl_str_mv Deyá, Marta Cecilia
Del Amo, Delia Beatriz
Spinelli, Enrique Mario
Romagnoli, Roberto
author Deyá, Marta Cecilia
author_facet Deyá, Marta Cecilia
Del Amo, Delia Beatriz
Spinelli, Enrique Mario
Romagnoli, Roberto
author_role author
author2 Del Amo, Delia Beatriz
Spinelli, Enrique Mario
Romagnoli, Roberto
author2_role author
author
author
dc.subject.none.fl_str_mv Ingeniería Química
Zinc phosphate
Zeolite
Molybdenum ions
Anticorrosive paints
Electrochemical noise
topic Ingeniería Química
Zinc phosphate
Zeolite
Molybdenum ions
Anticorrosive paints
Electrochemical noise
dc.description.none.fl_txt_mv Zinc phosphate and related compounds are convenient replacements for chromates. However, more eco-compatible pigments are being investigated. The objective of this research was to develop a modified zeolitic rock which is intended to replace phosphate pigments in anticorrosive paints. The modified zeolitic rock was obtained by grinding the rock followed with ionic exchange with molybdenyl ions. This “composite” has an intelligent behavior because molybdenum compounds are leached from the zeolite particle by corrodent species. The anticorrosive properties of this zeolitic rock were studied by electrochemical techniques, employing inhibitor suspensions, and formulating anticorrosive coatings. Coatings performance was evaluated by accelerated tests (humidity chamber and salt spray) and electrochemical noise measurements (ENM). Electrochemical noise data were analyzed in the time domain. The noise resistance (Rn) was compared, as far as possible, with the polarization resistance. It was demonstrated that zinc phosphate content could be reduced to one-third with respect to the recommended value in the literature. The electrochemical noise technique allowed to differentiate the anticorrosive performance of the different coatings formulated in this research.
Centro de Investigación y Desarrollo en Tecnología de Pinturas
description Zinc phosphate and related compounds are convenient replacements for chromates. However, more eco-compatible pigments are being investigated. The objective of this research was to develop a modified zeolitic rock which is intended to replace phosphate pigments in anticorrosive paints. The modified zeolitic rock was obtained by grinding the rock followed with ionic exchange with molybdenyl ions. This “composite” has an intelligent behavior because molybdenum compounds are leached from the zeolite particle by corrodent species. The anticorrosive properties of this zeolitic rock were studied by electrochemical techniques, employing inhibitor suspensions, and formulating anticorrosive coatings. Coatings performance was evaluated by accelerated tests (humidity chamber and salt spray) and electrochemical noise measurements (ENM). Electrochemical noise data were analyzed in the time domain. The noise resistance (Rn) was compared, as far as possible, with the polarization resistance. It was demonstrated that zinc phosphate content could be reduced to one-third with respect to the recommended value in the literature. The electrochemical noise technique allowed to differentiate the anticorrosive performance of the different coatings formulated in this research.
publishDate 2013
dc.date.none.fl_str_mv 2013
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/10915/98938
url http://sedici.unlp.edu.ar/handle/10915/98938
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0300-9440
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.porgcoat.2012.09.014
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
525-532
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 12.982451

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