Electrochemical quartz crystal microbalance and electrochemical impedance spectroscopy study of copper corrosion inhibition by imidazoles (CROSBI ID 151244)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Otmačić Ćurković, Helena ; Stupnišek-Lisac, Ema ; Takenouti, Hisasi
engleski
Electrochemical quartz crystal microbalance and electrochemical impedance spectroscopy study of copper corrosion inhibition by imidazoles
The aim of this work is to obtain deeper insight into the mechanism of the protective action of three imidazole-based corrosion inhibitors. Investigations were performed on copper in 3% NaCl, by electrochemical impedance spectroscopy and electrochemical quartz crystal microbalance measurements. The kinetic changes in the corrosion processes were monitored over time. In spite of similar molecular structure, differences in the inhibiting mechanism of three imidazole compounds were observed. The two inhibitors with a tolyl substituent decreased the copper corrosion rate due to the formation of a thin adsorbate layer ; however, slow formation of a thick layer was observed for 4-methyl-1-phenylimidazole. From electrochemical impedance spectroscopy studies, it was observed that all three inhibitors protected the copper efficiently, and in some cases, the degree of the protection increased with time.
copper ; EIS ; EQCM ; neutral inhibition
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Podaci o izdanju
51 (10)
2009.
2342-2348
objavljeno
0010-938X
1879-0496
10.1016/j.corsci.2009.06.018