Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions

The kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The <mat...

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Detalles Bibliográficos
Autores principales: Vilche, Jorge Roberto, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1975
Materias:
Ciencias Exactas
Química
Kinetics
Nickel electrode
Adsorbed hydroxo-species
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121739
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121739
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
Kinetics
Nickel electrode
Adsorbed hydroxo-species
spellingShingle Ciencias Exactas
Química
Kinetics
Nickel electrode
Adsorbed hydroxo-species
Vilche, Jorge Roberto
Arvia, Alejandro Jorge
Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
topic_facet Ciencias Exactas
Química
Kinetics
Nickel electrode
Adsorbed hydroxo-species
description The kinetics of the Ni electrode in acid solutions with a high chloride ion concentration has been investigated in the range of 25–75°C. Dissolution occurs uniformly only at low anodic potentials. When the latter exceeds a critical value, Ecrit, net localized metal corrosion takes place. The <math><mtext>E</mtext><mtext>ln</mtext><mtext> i</mtext><msub><mi></mi><mn>a</mn></msub></math> plot at E < Ecrit corresponds to a curve approaching two limiting slopes, namely, <math><mtext>2RT</mtext><mtext>3F</mtext></math> at (<math><mtext>E − E</mtext><msub><mi></mi><mn><mtext>rest</mtext></mn></msub><mtext>) → 0, </mtext><mtext>and</mtext><mtext> </mtext><mtext>2RT</mtext><mtext>F</mtext><mtext> </mtext><mtext>at</mtext><mtext> E → E</mtext><msub><mi></mi><mn><mtext>crit</mtext></mn></msub></math>. The cathodic Tafel slope is <math><mtext>2RT</mtext><mtext>F</mtext></math>. These results, including their pH dependence, are explained with a reaction mechanism involving the participation of adsorbed hydroxo-species.
format Articulo
Articulo
author Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_facet Vilche, Jorge Roberto
Arvia, Alejandro Jorge
author_sort Vilche, Jorge Roberto
title Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_short Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_full Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_fullStr Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_full_unstemmed Kinetics and mechanism of the nickel electrode : I. Acid solutions containing a high concentration of chloride and nickel ions
title_sort kinetics and mechanism of the nickel electrode : i. acid solutions containing a high concentration of chloride and nickel ions
publishDate 1975
url http://sedici.unlp.edu.ar/handle/10915/121739
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AT arviaalejandrojorge kineticsandmechanismofthenickelelectrodeiacidsolutionscontainingahighconcentrationofchlorideandnickelions
bdutipo_str Repositorios
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