Optimization of the surface properties of nanostructured Ni–W alloys on steel by a mixed silane layer

Ni–W nanostructured coatings electrodeposited on steel by galvanostatic pulses were functionalized by tetraethoxysilane (TEOS) and octadecyltrichlorosilane (OTS) in a two-step procedure. A silica-rich layer is formed by the reaction of TEOS with the metal coating surface oxides, which allows a furth...

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Detalles Bibliográficos
Autores principales: Quiroga Argañaraz, María Pía, Ramallo López, José Martín, Benitez, Guillermo Alfredo, Rubert, Aldo Alberto, Prieto, Eduardo Daniel, Gassa, Liliana Mabel, Salvarezza, Roberto Carlos, Vela, María Elena
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Ni–W alloys
nanostructured surfaces
silanes
corrosion protection
wetting
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/114718
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:Ni–W nanostructured coatings electrodeposited on steel by galvanostatic pulses were functionalized by tetraethoxysilane (TEOS) and octadecyltrichlorosilane (OTS) in a two-step procedure. A silica-rich layer is formed by the reaction of TEOS with the metal coating surface oxides, which allows a further reaction with OTS forming a hydrocarbon-silica outer network. This mixed silane layer provides hydrophobicity and improves the corrosion behavior of the Ni–W surface coatings without modifying their excellent mechanical properties.

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