Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions

The ellipsometric and voltammetric responses of iron in 0.04 M NaOH + xM NaCl (0 ⩽ x ⩽ 0.3) are investigated. Three main processes, barrier layer formation, outer layer formation and pitting corrosion which depend differently on the presence of NaCl can be distinguished. The first process becomes pr...

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Autores principales: Juanto, S., Zerbino, Jorge Omar, Miguez, M.I., Vilche, Jorge Roberto, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1987
Materias:
Ciencias Exactas
Química
Polycrystalline iron electrodes
Alkaline solutions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/120821
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-120821
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
Polycrystalline iron electrodes
Alkaline solutions
spellingShingle Ciencias Exactas
Química
Polycrystalline iron electrodes
Alkaline solutions
Juanto, S.
Zerbino, Jorge Omar
Miguez, M.I.
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
topic_facet Ciencias Exactas
Química
Polycrystalline iron electrodes
Alkaline solutions
description The ellipsometric and voltammetric responses of iron in 0.04 M NaOH + xM NaCl (0 ⩽ x ⩽ 0.3) are investigated. Three main processes, barrier layer formation, outer layer formation and pitting corrosion which depend differently on the presence of NaCl can be distinguished. The first process becomes practically independent of NaCl concentration. Otherwise, under certain conditions NaCl increases the charge associated with the outer layer formation through pitting. The dependence of the latter on NaCl concentration is in agreement with data earlier reported in the literature. A relation among the three processes is discussed in terms of competitive anion adsorption on iron specimen and formation of redox couples within the hydrous oxide layer produced on iron.
format Articulo
Articulo
author Juanto, S.
Zerbino, Jorge Omar
Miguez, M.I.
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_facet Juanto, S.
Zerbino, Jorge Omar
Miguez, M.I.
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_sort Juanto, S.
title Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
title_short Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
title_full Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
title_fullStr Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
title_full_unstemmed Ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
title_sort ellipsometry of polycrystalline iron electrodes in alkaline solutions containing chloride ions under different electrochemical conditions
publishDate 1987
url http://sedici.unlp.edu.ar/handle/10915/120821
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