title: Optimization of the surface properties of nanostructured Ni-W alloys on steel by a mixed silane layer.
abstract: 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.
authors.affiliation: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET - Sucursal 4 Casilla de Correo 16, (1900) La Plata, Argentina. mevela@inifta.unlp.edu.ar.
authors.forename: M P
authors.initials: MP
authors.lastname: Quiroga Argañaraz
authors.forename: J M
authors.initials: JM
authors.lastname: Ramallo-López
authors.forename: G
authors.initials: G
authors.lastname: Benítez
authors.forename: A
authors.initials: A
authors.lastname: Rubert
authors.forename: E D
authors.initials: ED
authors.lastname: Prieto
authors.forename: L M
authors.initials: LM
authors.lastname: Gassa
authors.forename: R C
authors.initials: RC
authors.lastname: Salvarezza
authors.forename: M E
authors.initials: ME
authors.lastname: Vela