Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions

The dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spe...

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Detalles Bibliográficos
Autores principales: Barbosa, M. R., Gassa, Liliana Mabel, Ruiz, Elsa Rosa
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131821
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131821
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
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
spellingShingle Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
Barbosa, M. R.
Gassa, Liliana Mabel
Ruiz, Elsa Rosa
Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
topic_facet Ciencias Exactas
Química
Ni-Co alloys
Amorphous alloys
Electrochemistry
Electrochemical impedance spectroscopy
X-ray photoelectron spectroscopy
description The dissolution processes of amorphous G15 (Ni₅₈Co₂₀B₁₂Si₁₀) and G16 (Ni₂₅Co₅₀B₁₀Si₁₅) alloys in carbonate-bicarbonate buffers (8.9 ≤ pH ≤ 10.5) have been studied using voltammetry and stationary polarization techniques combined with electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements. Results indicate that the electrochemical processes are dependent on the applied potential, the alloy composition, and the pH and ionic strength of the electrolyte. An enhancement of the corrosion processes is observed when the pH and the ionic strength are increased and when the Co content of the alloy diminishes. Furthermore, XPS provided information about the composition of the surface layer.
format Articulo
Articulo
author Barbosa, M. R.
Gassa, Liliana Mabel
Ruiz, Elsa Rosa
author_facet Barbosa, M. R.
Gassa, Liliana Mabel
Ruiz, Elsa Rosa
author_sort Barbosa, M. R.
title Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_short Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_full Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_fullStr Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_full_unstemmed Electrochemical behaviour of Ni-Co amorphous alloys in alkaline solutions
title_sort electrochemical behaviour of ni-co amorphous alloys in alkaline solutions
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/131821
work_keys_str_mv AT barbosamr electrochemicalbehaviourofnicoamorphousalloysinalkalinesolutions
AT gassalilianamabel electrochemicalbehaviourofnicoamorphousalloysinalkalinesolutions
AT ruizelsarosa electrochemicalbehaviourofnicoamorphousalloysinalkalinesolutions
bdutipo_str Repositorios
_version_ 1764820453391597569

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