Corrosion behavior of composite coatings obtained by electrolytic codeposition of copper with Al2O3 nanoparticles

Summary: Composite coatings of copper incorporating Al2O3 nanoparticles electrodeposited on carbon steel were obtained and characterized. By using electrochemical methods such as open circuit potential (ocp) measurements, polarization curves and electrochemical impedance spectroscopy, the corrosion...

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Permalink: http://skupnikatalog.nsk.hr/Record/nsk.NSK01000736280/Details
Matična publikacija: Chemical and biochemical engineering quarterly
23 (2009), 1 ; str. 43-52
Glavni autor: Zamblau, Imur (-)
Ostali autori: Varvara, S. (-), Bulea, C., Muresan, L. M.
Vrsta građe: Članak
Jezik: eng
Predmet:
Online pristup: Chemical and Biochemical Engineering Quarterly
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080 |a 66  |2 MRF 1998. 
100 1 |a Zamblau, Imur 
245 1 0 |a Corrosion behavior of composite coatings obtained by electrolytic codeposition of copper with Al2O3 nanoparticles /  |c I. Zamblau, S. Varvara, C. Bulea, L. M. Muresan. 
300 |b Ilustr. 
504 |a Bibliografija: 39 jed. 
520 8 |a Summary: Composite coatings of copper incorporating Al2O3 nanoparticles electrodeposited on carbon steel were obtained and characterized. By using electrochemical methods such as open circuit potential (ocp) measurements, polarization curves and electrochemical impedance spectroscopy, the corrosion behavior of the Al2O3-copper nanocomposite coatings was examined. The corrosion parameters determined from the polarization curves recorded in Na2SO4 solution (pH 3) indicate that the corrosion process on copper-Al2O3 composite surface is slower than on pure copper. The impedance spectra recorded at the ocp showed in all cases an increase of the polarization resistance in time, which may be explained by the development of corrosion products on the electrode surface. Using a (2RC) equivalent electrical circuit, the process parameters were estimated by non-linear regression calculations with a Simplex method. The Al2O3 particles embedded in the electroplated copper, increase the polarization resistance and decrease the corrosion rates as compared with electrodeposited pure copper. The electrochemical results were corroborated with those obtained by SEM and EDX investigations 
653 0 |a Bakar (kemijski element)  |a Korozija  |a Elektrolitička kodepozicija  |a Nanočestice  |a Aluminijev oksid  |a Ugljični čelik  |a Polarizacijski otpor  |a Nanokompoziti 
700 1 |a Varvara, S. 
700 1 |a Bulea, C. 
700 1 |a Muresan, L. M. 
773 0 |t Chemical and biochemical engineering quarterly  |x 0352-9568  |g 23 (2009), 1 ; str. 43-52  |w nsk.(HR-ZaNSK)000004762 
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856 4 2 |u http://hrcak.srce.hr/cabeq  |y Chemical and Biochemical Engineering Quarterly