The Behavior of Bronze in Sea Water

In this study we were interested in the behavior of bronze, intended for the marine sector. So, we immersed bronze coupons in seawater in the absence and then in the presence of oxygen Scavenger which is considered a corrosion inhibitor. We were particularly interested in the evolution of the corrosion rate as a function of time and the concentration of the inhibitor. The techniques used in this work are gravimetric and electrochemical (open circuit potential, potentiodynamic polarization, linear polarization resistance and electrochemical impedance spectroscopy), in addition to surface characterization by scanning electron microscopy and X-ray fluorescence. By adding an inhibitor (oxygen Scavenger) at different concentrations to seawater, reductions were observed in corrosion rates. A minimum value is recorded at 200 ppm (0.0940 mm/year). The effectiveness of the inhibitor is proportional to its concentration, a value of 48.77% efficiency is obtained in the presence of 200 ppm of Scavenger oxygen.