Phosphonic acid functionalization of nanostructured Ni–W coatings on steel

The functionalization of nanocrystalline Ni–W coatings, formed by galvanostatic pulsed electrodeposition on steel, by thermal treatment of octadecylphosphonic acid self-assembled on the oxidized alloy surface is studied by Raman spectroscopy, contact angle measurements, X-ray photoelectron spectrosc...

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Detalles Bibliográficos
Autores principales: Orrillo, Patricio Andrés, Ribotta, S.B., Gassa, Liliana Mabel, Benitez, Guillermo Alfredo, Salvarezza, Roberto Carlos, Vela, María Elena
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Química
Phosphonic acids
Ni W alloys
Nanostructured materials
Surface functionalization
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124391
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124391
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Phosphonic acids
Ni W alloys
Nanostructured materials
Surface functionalization
spellingShingle Química
Phosphonic acids
Ni W alloys
Nanostructured materials
Surface functionalization
Orrillo, Patricio Andrés
Ribotta, S.B.
Gassa, Liliana Mabel
Benitez, Guillermo Alfredo
Salvarezza, Roberto Carlos
Vela, María Elena
Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
topic_facet Química
Phosphonic acids
Ni W alloys
Nanostructured materials
Surface functionalization
description The functionalization of nanocrystalline Ni–W coatings, formed by galvanostatic pulsed electrodeposition on steel, by thermal treatment of octadecylphosphonic acid self-assembled on the oxidized alloy surface is studied by Raman spectroscopy, contact angle measurements, X-ray photoelectron spectroscopy, AFM and electrochemical techniques. Results show that this procedure preserves the surface topography and the optimum mechanical properties of the alloy. More importantly, it turns the alloy surface highly hydrophobic and markedly improves its corrosion resistance, in particular to pitting corrosion in aggressive solutions containing chloride anions. The ability of the phosphonate layer to improve surface properties arises from the barrier properties introduced by the hydrocarbon chains and the strong bonds between the phosphonate head and the underlying surface oxides.
format Articulo
Preprint
author Orrillo, Patricio Andrés
Ribotta, S.B.
Gassa, Liliana Mabel
Benitez, Guillermo Alfredo
Salvarezza, Roberto Carlos
Vela, María Elena
author_facet Orrillo, Patricio Andrés
Ribotta, S.B.
Gassa, Liliana Mabel
Benitez, Guillermo Alfredo
Salvarezza, Roberto Carlos
Vela, María Elena
author_sort Orrillo, Patricio Andrés
title Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
title_short Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
title_full Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
title_fullStr Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
title_full_unstemmed Phosphonic acid functionalization of nanostructured Ni–W coatings on steel
title_sort phosphonic acid functionalization of nanostructured ni–w coatings on steel
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/124391
work_keys_str_mv AT orrillopatricioandres phosphonicacidfunctionalizationofnanostructuredniwcoatingsonsteel
AT ribottasb phosphonicacidfunctionalizationofnanostructuredniwcoatingsonsteel
AT gassalilianamabel phosphonicacidfunctionalizationofnanostructuredniwcoatingsonsteel
AT benitezguillermoalfredo phosphonicacidfunctionalizationofnanostructuredniwcoatingsonsteel
AT salvarezzarobertocarlos phosphonicacidfunctionalizationofnanostructuredniwcoatingsonsteel
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bdutipo_str Repositorios
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