Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions

The passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)<sub>2</sub> solutions with the addition of chloride salt of concentrations up to 1 M. The comp...

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Detalles Bibliográficos
Autores principales:	Albani, Oscar Alfredo, Gassa, Liliana Mabel, Zerbino, Jorge Omar, Vilche, Jorge Roberto, Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1990
Materias:	Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/119219
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-119219
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure
spellingShingle	Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure Albani, Oscar Alfredo Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
topic_facet	Ciencias Exactas Química Passivity of iron Passivity breakdown Iron in saturated Ca(OH)2 solutions Ellipsometry of passive iron layers Influence of Cl− ions on passive iron Composite passive iron layer structure
description	The passivity and passivity breakdown of polycrystalline iron is investigated through electrochemical methods complemented with ellipsometry, by employing plain 0.04 M NaOH and saturated Ca(OH)<sub>2</sub> solutions with the addition of chloride salt of concentrations up to 1 M. The comparative results indicate that the initial reactions of Fe(OH)<sub>2</sub> formation at the inner part of the passive layer level (Fe<sub>3</sub>O<sub>4</sub>) are only slightly influenced by either the cation or the presence of Cl− ion in solution, in contrast to their large influence at the outer part of the passive layer (hydrous FeOOH species) where Fe<sup>2+</sup>/Fe<sup>3+</sup> redox reactions take place. At high positive potential the breakdown of passivity is also influenced by both Cl− ion and cation present in solution.
format	Articulo Articulo
author	Albani, Oscar Alfredo Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_facet	Albani, Oscar Alfredo Gassa, Liliana Mabel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_sort	Albani, Oscar Alfredo
title	Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
title_short	Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
title_full	Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
title_fullStr	Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
title_full_unstemmed	Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
title_sort	comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions
publishDate	1990
url	http://sedici.unlp.edu.ar/handle/10915/119219
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Comparative study of the passivity and the breakdown of passivity of polycrystalline iron in different alkaline solutions

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