Naslov
Corrosion inhibitors for bronze protection in polluted atmosphere

Autori
Keserović, Amela ; Otmačić Ćurković, Helena ; Stupnišek-Lisac, Ema ; Marušić, Katarina ; Furman, Alla ; Kharshan, Margarita

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

Izvornik
Proceedings Eurocorr 2010: From Earth's Depths to Space Heights / - Moskva, 2010, 1-13

Skup
Eurocorr 2010 (The European Corrosion Congress)

Mjesto i datum
Moskva, Ruska Federacija, 13.09.2010. - 17.09.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
bronze; acid rain; corrosion inhibitors; electrochemical methods; humidity chamber

Sažetak
The aim of this work was to investigate the possibility of bronze protection in atmospheric conditions by three protective systems. Two of them were based on environmentally friendly corrosion inhibitors: 4-methyl-1-(p- tolyl)imidazole and a vapor phase corrosion inhibitor. The third protective system was water based acrylic primer containing the mixture of non-toxic corrosion inhibitors. The research was carried out in the solution of 0.2 g dm-3 NaNO3, 0.2 g dm-3 Na2SO4 and 0.2 g dm-3 NaHCO3 at pH 3. This electrolyte simulated the composition of acid rain characteristic for polluted urban environment. Measurements were performed by the means of electrochemical methods – Tafel extrapolation method, linear polarization method and electrochemical impedance spectroscopy. Stability of the applied protection was also tested in humidity chamber at two temperatures (25 °C and 35 °C). Results of the investigation showed that each of the applied corrosion inhibitors provided protection to bronze in the tested conditions. However, the maximum inhibiting efficiency of 4- methyl-1-(p-tolyl)imidazole was about 68 %, that of vapor phase inhibitor about 98 %, while acrylic coating containing corrosion inhibitors had an efficiency of almost 100 %.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA