Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum

Tara tannin is studied as an inhibitor of aluminum corrosion, immersed in an aerated and near-neutral NaCl solution and in a wash-primer formulation. Electrochemical tests prove that tara tannins provide good corrosion resistance for aluminum, and scanning electron microscopy coupled to energy dispe...

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Autores principales: Byrne, Christian Eduardo, D'Alessandro, Oriana, Deyá, Marta Cecilia
Formato: Articulo
Lenguaje:Español
Publicado: 2021
Materias:
Ingeniería Química
aluminum
corrosion
green anticorrosive pigment
tannins
tara
wash-primer
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/135514
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-135514
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ingeniería Química
aluminum
corrosion
green anticorrosive pigment
tannins
tara
wash-primer
spellingShingle Ingeniería Química
aluminum
corrosion
green anticorrosive pigment
tannins
tara
wash-primer
Byrne, Christian Eduardo
D'Alessandro, Oriana
Deyá, Marta Cecilia
Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
topic_facet Ingeniería Química
aluminum
corrosion
green anticorrosive pigment
tannins
tara
wash-primer
description Tara tannin is studied as an inhibitor of aluminum corrosion, immersed in an aerated and near-neutral NaCl solution and in a wash-primer formulation. Electrochemical tests prove that tara tannins provide good corrosion resistance for aluminum, and scanning electron microscopy coupled to energy dispersive x-ray spectroscopy shows a low formation of corrosion products, absence of Cl and presence of C. These results indicate that tannins act as a mixed-type inhibitor without changing the mechanism of oxygen or aluminum reactions, and that tannin is adsorbed on aluminum surfaces forming a compact hydrophobic barrier that blocks anodic and cathodic areas. A tara tannin primer was formulated and applied on aluminum. Its anticorrosive properties were studied by electrochemical techniques and humidity chamber testing, in which it exhibited an acceptable performance compared with a zinc tetroxychromate primer. Taking into account their less harmful environmental impact, tara tannins are proposed as an alternative to chromates in the formulation of wash-primers.
format Articulo
Articulo
author Byrne, Christian Eduardo
D'Alessandro, Oriana
Deyá, Marta Cecilia
author_facet Byrne, Christian Eduardo
D'Alessandro, Oriana
Deyá, Marta Cecilia
author_sort Byrne, Christian Eduardo
title Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
title_short Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
title_full Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
title_fullStr Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
title_full_unstemmed Tara Tannins as a Green Sustainable Corrosion Inhibitor for Aluminum
title_sort tara tannins as a green sustainable corrosion inhibitor for aluminum
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/135514
work_keys_str_mv AT byrnechristianeduardo taratanninsasagreensustainablecorrosioninhibitorforaluminum
AT dalessandrooriana taratanninsasagreensustainablecorrosioninhibitorforaluminum
AT deyamartacecilia taratanninsasagreensustainablecorrosioninhibitorforaluminum
bdutipo_str Repositorios
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