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Inhibition of copper corrosion by modifying cysteine self-assembled film with alkylamine/alkylacid compounds / D.-Q. Zhang in Materials and corrosion, Vol. 61 N° 1 (Janvier 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 1 (Janvier 2010) . - pp. 16–21 Titre : Inhibition of copper corrosion by modifying cysteine self-assembled film with alkylamine/alkylacid compounds Type de document : texte imprimé Auteurs : D.-Q. Zhang, Auteur ; L.-X. Gao, Auteur ; Q.-R. Cai, Auteur Année de publication : 2010 Article en page(s) : pp. 16–21 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Amino  acid;  copper;  corrosion;  modification;  self-assembled  monolayers  (SAMs) Résumé : Complex self-assembled monolayers (SAMs) were prepared by modifying the adsorption of cysteine with dodecylacid (DAC) and with dodecylamine (DAM) on copper surfaces. Their protective effects against copper corrosion were investigated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in 0.5 M HCl aqueous solution. Results show that SAMs suppress cathodic current densities and shift the corrosion potential toward more negative values. Two types of complex SAMs enhance the anticorrosion effect of cysteine SAMs. PM3 semi-empirical quantum calculations were used to obtain the quantum chemical parameters. The complex SAMs formed from cysteine and DAM have the higher EHOMO level and the better protection effect. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905225/abstract [article] Inhibition of copper corrosion by modifying cysteine self-assembled film with alkylamine/alkylacid compounds [texte imprimé] / D.-Q. Zhang, Auteur ; L.-X. Gao, Auteur ; Q.-R. Cai, Auteur . - 2010 . - pp. 16–21. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 1 (Janvier 2010) . - pp. 16–21 Mots-clés : Amino  acid;  copper;  corrosion;  modification;  self-assembled  monolayers  (SAMs) Résumé : Complex self-assembled monolayers (SAMs) were prepared by modifying the adsorption of cysteine with dodecylacid (DAC) and with dodecylamine (DAM) on copper surfaces. Their protective effects against copper corrosion were investigated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in 0.5 M HCl aqueous solution. Results show that SAMs suppress cathodic current densities and shift the corrosion potential toward more negative values. Two types of complex SAMs enhance the anticorrosion effect of cysteine SAMs. PM3 semi-empirical quantum calculations were used to obtain the quantum chemical parameters. The complex SAMs formed from cysteine and DAM have the higher EHOMO level and the better protection effect. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905225/abstract