Phosphonic acid functionalization of nanostructured Ni–W coatings on steel

dc.creatorOrrillo, Patricio Andrés
dc.creatorRibotta, S.B.
dc.creatorGassa, Liliana Mabel
dc.creatorBenitez, Guillermo Alfredo
dc.creatorSalvarezza, Roberto Carlos
dc.creatorVela, María Elena
dc.date2018
dc.date2021-09-08T14:25:24Z
dc.date.accessioned2023-07-15T03:15:07Z
dc.date.available2023-07-15T03:15:07Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/124391
dc.identifierissn:0169-4332
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7465003
dc.descriptionThe 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.
dc.descriptionInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
dc.formatapplication/pdf
dc.format292-299
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectQuímica
dc.subjectPhosphonic acids
dc.subjectNi W alloys
dc.subjectNanostructured materials
dc.subjectSurface functionalization
dc.titlePhosphonic acid functionalization of nanostructured Ni–W coatings on steel
dc.typeArticulo
dc.typePreprint


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