Kinetics of iron passivation and corrosion in molten alkali nitrates

The electrochemical behaviour of iron anodes in molten alkali nitrates has been investigated at temperatures ranging from ca 240–320°C. The E/I curves exhibit a potential region where the electrode passivates. Two different oxidized states of the passive iron surface exist. Within definite potential...

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Detalles Bibliográficos
Autores principales: Arvia, Alejandro Jorge, Podestá, José J., Piatti, Roberto C. V.
Formato: Articulo
Lenguaje:Inglés
Publicado: 1972
Materias:
Ciencias Exactas
Química
Kinetics
Electrochemical behaviour
Nitrite
Iron
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121835
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-121835
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
Electrochemical behaviour
Nitrite
Iron
spellingShingle Ciencias Exactas
Química
Kinetics
Electrochemical behaviour
Nitrite
Iron
Arvia, Alejandro Jorge
Podestá, José J.
Piatti, Roberto C. V.
Kinetics of iron passivation and corrosion in molten alkali nitrates
topic_facet Ciencias Exactas
Química
Kinetics
Electrochemical behaviour
Nitrite
Iron
description The electrochemical behaviour of iron anodes in molten alkali nitrates has been investigated at temperatures ranging from ca 240–320°C. The E/I curves exhibit a potential region where the electrode passivates. Two different oxidized states of the passive iron surface exist. Within definite potential regions, the oxidation of nitrite and iron occurs, the latter being characterized by a Tafel slope of 2RT/F. At high positive potentials the breakdown of passivity is observed. Results are interpreted in terms of the stability of possible iron oxides during the electrode reaction. The kinetics of nitrite and nitrate ion oxidation on the passive surface is discussed on the basis of previous work. A comparison between iron passivation and corrosion in molten nitrites and nitrates is made.
format Articulo
Articulo
author Arvia, Alejandro Jorge
Podestá, José J.
Piatti, Roberto C. V.
author_facet Arvia, Alejandro Jorge
Podestá, José J.
Piatti, Roberto C. V.
author_sort Arvia, Alejandro Jorge
title Kinetics of iron passivation and corrosion in molten alkali nitrates
title_short Kinetics of iron passivation and corrosion in molten alkali nitrates
title_full Kinetics of iron passivation and corrosion in molten alkali nitrates
title_fullStr Kinetics of iron passivation and corrosion in molten alkali nitrates
title_full_unstemmed Kinetics of iron passivation and corrosion in molten alkali nitrates
title_sort kinetics of iron passivation and corrosion in molten alkali nitrates
publishDate 1972
url http://sedici.unlp.edu.ar/handle/10915/121835
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AT podestajosej kineticsofironpassivationandcorrosioninmoltenalkalinitrates
AT piattirobertocv kineticsofironpassivationandcorrosioninmoltenalkalinitrates
bdutipo_str Repositorios
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