Naslov
Imidazole Derivatives as Copper Corrosion Inhibitors

Autori
Otmačić, Helena ; Stupnišek-Lisac, Ema

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Congress Proceedings 15th International Corrosion Congress / Morcillo, M. - Madrid : Spanish Council for Scientific Research, 2002, 1-7

Skup
15th International Corrosion Congress

Mjesto i datum
Granada, Španjolska, 22.09.2002. - 27.09.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
corrosion inhibition; copper; sodium chloride; imidazole derivative

Sažetak
Different imidazole derivatives, proven to be ecologically exceptable, have shown good inhibiting properties for atmospheric and acidic (H2SO4 and HCl) copper corrosion. The aim of this work was to investigate the efficiency of three imidazole derivatives [ethyl-4-methyl-5-imidazolecarboxylate, 1-phenyl-4-methylimidazole and 4-methyl-1(4-methoxyphenyl) imidazole] as copper corrosion inhibitors in 3% sodium chloride solution. Copper corrosion, in the absence and in the presence of investigated imidazole derivatives, was analyzed by electrochemical methods (Tafel extrapolation, polarization resistance determination and cyclic voltammetry), at different temperatures as well as by weight loss measurements for different immersion periods. Free adsorption energies of investigated imidazole derivatives and activation energies for copper in 3% NaCl with and without the addition of imidazoles, have been calculated. Results of our work show that investigated imidazole derivatives have very good inhibiting properties for copper corrosion in near neutral chloride media.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA