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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Detalhes bibliográficos
Autores: Quiroga Argañaraz, María Pía, Ramallo Lopez, Jose Martin, Benitez, Guillermo Alfredo, Rubert, Aldo Alberto, Prieto, Eduardo Daniel, Gassa, Liliana Mabel, Salvarezza, Roberto Carlos, Vela, Maria Elena
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2015
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositório:CONICET Digital (CONICET)
Idioma:inglês
OAI Identifier:oai:ri.conicet.gov.ar:11336/48778
Acesso em linha:http://hdl.handle.net/11336/48778
Access Level:Acceso aberto
Palavra-chave:Ni-W Alloys
Nanostructured Surfaces
Silanes
Corrosion Protection
Wetting
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
Descrição
Resumo: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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