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University of Zenica , Zenica , Bosnia and Herzegovina
Pharmamed d.o.o. , Travnik , Bosnia and Herzegovina
Faculty of Social Sciences Dr. Milenko Brkić Mostar, Herzegovina University , Mostar , Bosnia and Herzegovina
The paper presents an examination of the possibility of applying wild raspberry fruit extract as a green inhibitor of general corrosion of brass in 3% NaCl. Wild raspberry fruits were collected from the Moševac near Maglaj city, Bosnia and Herzegovina. Wild raspberry fruit extract was obtained by ultrasonic method. By UV/VIS spectrophotometry analysis a significant content of polyphenol was found in the wild raspberry fruit extract.
Results obtained by DC techniques (by the methods of Tafel extrapolation and linear polarization) prove that the corrosion rate decreases in the presence of the wild raspberry fruit extract. Tests performed by the method of electrochemical impedance spectroscopy prove that the tested extracts slow down the kinetics of the corrosion process, which is visible through the increase in resistance. The results of the conducted tests prove that in an aggressive medium, such as 3% NaCl solution, wild raspberry fruit extract can be used as an inhibitor of brass corrosion in concentracion of 0.04828 g/L.
wild raspberry fruit, DC techniques, electrochemical impedance spectroscopy, green inhibitor
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