Sol-gel hybrid films based on organosilane and montmorillonite for corrosion inhibition of AA2024

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor	Universitat Politècnica de Catalunya. IMEM - Innovació, Modelització i Enginyeria en (BIO) Materials
dc.contributor.author	Dalmoro, V.
dc.contributor.author	Dos Santos, J.H.Z.
dc.contributor.author	Armelín Diggroc, Elaine Aparecida
dc.contributor.author	Alemán Llansó, Carlos
dc.contributor.author	Azambuja, Denise S.
dc.date	2014-07-15
dc.identifier.citation	Dalmoro, V. [et al.]. Sol-gel hybrid films based on organosilane and montmorillonite for corrosion inhibition of AA2024. "Journal of colloid and interface science", 15 Juliol 2014, vol. 426, p. 308-313.
dc.identifier.citation	0021-9797
dc.identifier.citation	10.1016/j.jcis.2014.04.021
dc.identifier.uri	http://hdl.handle.net/2117/23510
dc.language.iso	eng
dc.relation	http://www.sciencedirect.com/science/article/pii/S0021979714002252
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria química
dc.subject	Aluminum alloys
dc.subject	Protective coatings
dc.subject	Aluminum
dc.subject	Corrosion
dc.subject	Hybrid coating
dc.subject	Montmorillonite
dc.subject	Sol-gel
dc.subject	ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY
dc.subject	WATER-BARRIER PROPERTIES
dc.subject	ALUMINUM-ALLOY
dc.subject	CLAY NANOPARTICLES
dc.subject	SILANE FILMS
dc.subject	SILICA
dc.subject	PROTECTION
dc.subject	COATINGS
dc.subject	2024-T3
dc.subject	NANOCOMPOSITES
dc.subject	Alumini -- Aliatges
dc.subject	Revestiments protectors
dc.title	Sol-gel hybrid films based on organosilane and montmorillonite for corrosion inhibition of AA2024
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The present work reports the production of films on AA2024-T3 composed of vinyltrimethoxysilane (VTMS)/tetraethylorthosilicate (TEOS) with incorporation of montmorillonite (sodium montmorillonite and montmorillonite modified with quaternary ammonium salt, abbreviated Na and 30B, respectively), generated by the sal-gel process. According to FT-IR analyses the incorporation of montmorillonite does not affect silica network. Electrochemical characterization was performed by electrochemical impedance spectroscopy measurement in 0.05 mol L-1 NaCl solution. Results indicate that montmorillonite incorporation improves the corrosion protection compared to the non-modified system. Scanning electron microscopy micrographs reveal that high concentrations of montmorillonite provide agglomerations on the metallic surface, which is in detriment of the anticorrosive performance. The VTMS/TEOS/30B films with the lowest concentration (22 mg L-1) of embedded clay provide the highest corrosion protection. (C) 2014 Elsevier Inc. All rights reserved.
dc.description.abstract	Peer Reviewed

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