A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes

The electrochemical and ellipsometric responses of iron electrodes in 0.04 M NaOH and in saturated Ca(OH)<sub>2</sub> are investigated at 25°C, in the potential range where the passivating layer in the absence of oxygen under potential controlled and non-equilibrium conditions is formed....

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Detalles Bibliográficos
Autores principales:	Albani, Oscar Alfredo, Zerbino, Jorge Omar, Vilche, Jorge Roberto, Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1986
Materias:	Ciencias Exactas Química Hierro Electrodos Electroquímica Electrólitos Alcalinización Hidróxidos
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/82352
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-82352
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institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Química Hierro Electrodos Electroquímica Electrólitos Alcalinización Hidróxidos
spellingShingle	Ciencias Exactas Química Hierro Electrodos Electroquímica Electrólitos Alcalinización Hidróxidos Albani, Oscar Alfredo Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
topic_facet	Ciencias Exactas Química Hierro Electrodos Electroquímica Electrólitos Alcalinización Hidróxidos
description	The electrochemical and ellipsometric responses of iron electrodes in 0.04 M NaOH and in saturated Ca(OH)<sub>2</sub> are investigated at 25°C, in the potential range where the passivating layer in the absence of oxygen under potential controlled and non-equilibrium conditions is formed. From the correlation of results a composite structure of the passivating layer is envisaged involving an inner layer which is difficult to electroreduce, probably related to Fe<sub>3</sub>O<sub>4</sub>, and an outer gelatinous iron hydroxide layer where a relatively fast, Fe(II)/Fe(III) redox process can be voltammetrically followed. The inhibitive properties of saturated Ca(OH)<sub>2</sub> as compared to 0.04 M NaOH are explained through the absorption of Ca<sup>2+</sup> ions at the outer plane of the inner part of the passivating film and the corresponding transport of water into the gelatinous part of the passivating film.
format	Articulo Articulo
author	Albani, Oscar Alfredo Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_facet	Albani, Oscar Alfredo Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge
author_sort	Albani, Oscar Alfredo
title	A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
title_short	A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
title_full	A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
title_fullStr	A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
title_full_unstemmed	A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
title_sort	comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes
publishDate	1986
url	http://sedici.unlp.edu.ar/handle/10915/82352
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A comparative electrochemical and ellipsometric study of the iron electrodes in different alkaline electrolytes

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