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

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 z...

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Detalles Bibliográficos
Autores principales:	Deyá, Marta Cecilia, Del Amo, Delia Beatriz, Spinelli, Enrique Mario, Romagnoli, Roberto
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2013
Materias:	Ingeniería Química Zinc phosphate Zeolite Molybdenum ions Anticorrosive paints Electrochemical noise
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/98938
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-98938
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 Zinc phosphate Zeolite Molybdenum ions Anticorrosive paints Electrochemical noise
spellingShingle	Ingeniería Química Zinc phosphate Zeolite Molybdenum ions Anticorrosive paints Electrochemical noise Deyá, Marta Cecilia Del Amo, Delia Beatriz Spinelli, Enrique Mario Romagnoli, Roberto The assessment of a smart anticorrosive coating by the electrochemical noise technique
topic_facet	Ingeniería Química Zinc phosphate Zeolite Molybdenum ions Anticorrosive paints Electrochemical noise
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.
format	Articulo Articulo
author	Deyá, Marta Cecilia Del Amo, Delia Beatriz Spinelli, Enrique Mario Romagnoli, Roberto
author_facet	Deyá, Marta Cecilia Del Amo, Delia Beatriz Spinelli, Enrique Mario Romagnoli, Roberto
author_sort	Deyá, Marta Cecilia
title	The assessment of a smart anticorrosive coating by the electrochemical noise technique
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	assessment of a smart anticorrosive coating by the electrochemical noise technique
publishDate	2013
url	http://sedici.unlp.edu.ar/handle/10915/98938
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bdutipo_str	Repositorios
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The assessment of a smart anticorrosive coating by the electrochemical noise technique

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