The electrochemistry of nanostructured Ni–W alloys

This work reports on the features that Ni–W nanostructured alloys, electrodeposited on carbon steel by different current pulse programs, may present depending on their surface morphology and surface composition. The Ni–W nanostructured coating, with a cauliflower structure, lack of fragility, and hi...

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Detalles Bibliográficos
Autores principales: Quiroga Argañaraz, M. P., Ribotta, S. B., Folquer, M. E., Benitez, Guillermo Alfredo, Rubert, Aldo Alberto, Gassa, Liliana Mabel, Vela, María Elena, Salvarezza, Roberto Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Química
Pulse electrodeposition
Ni-W alloys
Nanostructured materials
XPS
Corrosion resistance
Hydrogen evolution reaction
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/108965
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:This work reports on the features that Ni–W nanostructured alloys, electrodeposited on carbon steel by different current pulse programs, may present depending on their surface morphology and surface composition. The Ni–W nanostructured coating, with a cauliflower structure, lack of fragility, and high WO3/W surface composition ratio, is a stable electrode to catalyze hydrogen evolution reaction, exceeding bulk and electrodeposited Ni catalytic activity. Also, the nanostructured alloys must have a low WO3/W surface composition ratio for Ni and its oxides to provide protection and improve corrosion resistance in sulfate media.

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