Testing the effectiveness of raspberry flower extract as an inhibitor of copper's corrosion in 3% NaCl

The paper presents an examination of the possibility applying raspberry flower extract (Rubus idaeus L.) as a green inhibitor general corrosion copper in 3% NaCl. Raspberry flowers sort Polka were collected from Moševac near Maglaj city, Bosnia and Herzegovina. ethanol was obtained by ultrasonic extraction. A significant content polyphenol found UV/VIS spectrophotometry analysis. Results DC techniques (by methods Tafel extrapolation, potentiodynamic polarization linear polarization) prove that rate decreases presence extract. Tests performed method electrochemical impedance spectroscopy tested extracts slow down kinetics process, which is visible through increase resistance. results conducted tests aggressive medium, such NaCl solution, can be used copper's corrosion.