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

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 cau...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Roselli, Sol Natacha, Bellotti, Natalia, Deyá, Marta Cecilia, Revuelta, Mariana Valeria, Del Amo, Delia Beatriz, Romagnoli, Roberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95571
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95571
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
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
spellingShingle Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
Roselli, Sol Natacha
Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
topic_facet Ingeniería Química
Exchanged pigments
Corrosion
Anticorrosive paints
Electrochemical noise measurements
Rare earths
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.
format Articulo
Articulo
author Roselli, Sol Natacha
Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
author_facet Roselli, Sol Natacha
Bellotti, Natalia
Deyá, Marta Cecilia
Revuelta, Mariana Valeria
Del Amo, Delia Beatriz
Romagnoli, Roberto
author_sort Roselli, Sol Natacha
title Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel
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
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/95571
work_keys_str_mv AT rosellisolnatacha lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
AT bellottinatalia lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
AT deyamartacecilia lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
AT revueltamarianavaleria lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
AT delamodeliabeatriz lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
AT romagnoliroberto lanthanumexchangedzeoliteandclayasanticorrosivepigmentsforgalvanizedsteel
bdutipo_str Repositorios
_version_ 1764820492110266370

Ejemplares similares