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Titolo:
The effect of pretreatments with siloxanes on the corrosion resistance of aluminium in NaCl solution
Autore:
Beccaria, AM; Padeletti, G; Montesperelli, G; Chiaruttini, L;
Indirizzi:
CNR, Ist Corros Marina Met, I-16149 Genoa, Italy CNR Genoa Italy I-16149CNR, Ist Corros Marina Met, I-16149 Genoa, Italy CNR, Ist Chim Mat, I-00100 Rome, Italy CNR Rome Italy I-00100CNR, Ist Chim Mat, I-00100 Rome, Italy Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, I-00133 Rome, ItalyUniv Roma Tor Vergata Rome Italy I-00133 ecnol Chim, I-00133 Rome, Italy
Titolo Testata:
SURFACE & COATINGS TECHNOLOGY
fascicolo: 2-3, volume: 111, anno: 1999,
pagine: 240 - 246
SICI:
0257-8972(19990129)111:2-3<240:TEOPWS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORGANIC COATINGS; BEHAVIOR; IRON; SURFACES;
Keywords:
aluminium; atomic force microscopy (AFM); corrosion; electrochemical impedance spectroscopy (EIS); NaCl solutions; silanising; x-ray photoelectron spectroscopy (XPS);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Beccaria, AM CNR, Ist Corros Marina Met, Via De Marini 6, I-16149 Genoa, Italy CNR Via De Marini 6 Genoa Italy I-16149 I-16149 Genoa, Italy
Citazione:
A.M. Beccaria et al., "The effect of pretreatments with siloxanes on the corrosion resistance of aluminium in NaCl solution", SURF COAT, 111(2-3), 1999, pp. 240-246

Abstract

The inhibitory action of different pretreatments with metacryloxypropylmethoxysilane (MAOS) on the corrosion of aluminium in NaCl aqueous 3.5% solutions has been examined. Free corrosion and electrochemical tests (potentiodynamic polarisation andelectrochemical impedance spectroscopy) were performed to characterise theresistance to general and localised corrosion of pretreated specimens. Thesurfaces of uncorroded pretreated samples were characterised by SEM and AFM. Their surfaces were also examined with XPS technique before and after corrosion attack. It was found that the inhibitory action of MAOS against general and localised corrosion depends on the nature of the solvent in which it is dispersed. The siloxane polymeric film formed by MAOS aqueous dispersion acts as a good corrosion inhibitor in the whole exposure time range, whereas the inhibitory power of the polymeric film formed by MAOS methanol solutions decreases with increasing immersion time. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 04:24:55