Abstract
Abstract The polarization resistance measurement was applied for determination of the corrosion rates of 60–40 forged brass and bronze casting in flowing fresh water. The results at three different flow rates (0.1, 1.5, and 3.0 m/s) were compared with the weight loss and dezincification depth obtained after exposure of 180 days. Good agreement was found between the average corrosion current density and the weight loss data. Furthermore, the average depth of dezincification can be predicted from the average corrosion current density under the assumption that dezincification progresses with preferential dissolution of beta brass phase and all beta phases act as the anode while all alpha phases act as the cathode. The effect of flow rate on the corrosion rate can be well described with the mass transfer treatment.
Published Version
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