Naslov
Copper Protection under Flow Conditions

Autori
Milohanović, Ivana ; Šimunec, Tomislav ; Otmačić Ćurković, Helena ; Marušić, Katarina ; Stupnišek-Lisac, Ema

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

Izvornik
Corrosion and Material Protection / - Prag : SVUOM, 2007, 1-7

ISBN
978-80-903933

Skup
1st International Conference Corrosion and Material Protection

Mjesto i datum
Prag, Češka Republika, 01.10.2007. - 04.10.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Copper; corrosion inhibitors; imidazole; electrochemical measurements; rotating disc electrode

Sažetak
Imidazole compounds are known as efficient copper corrosion inhibitors. This work aims to study the inhibiting efficiency of 4-methyl-1-(p-tolyl) imidazole as a copper corrosion inhibitor in 0.5 M NaCl. Investigations are performed on rotating disc electrode (RDE) in order to evaluate the influence of the flow of electrolyte on inhibiting property of 4-methyl-1-(p-tolyl) imidazole. Studies are performed at four rotation rates of working electrode by means of polarization measurements and electrochemical impedance spectroscopy. Results show that the copper corrosion rate in 0.5 M NaCl, with and without studied inhibitor, significantly depends on rotation rate of RDE. Increase of corrosion rate with the increase of rotation rate is observed which can be attributed to faster dissolution of corrosion products. On contrary efficiency of 4-methyl 1-(p-tolyl) imidazole is not very much dependent on rotation of electrode ; it is between 86% and 95% for studied rotation rates. Results obtained by electrochemical impedance spectroscopy show that studied inhibitor acts mainly through hindering the dissolution kinetics rather than the formation of barrier film.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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