Corrosion Behavior of Galvanized Steel with Exposed Substrate in a Marine Environment

The corrosion behavior of galvanized steel with various percentages of exposed substrate in a sodium chloride (NaCl) solution was investigated using electrochemical impedance spectroscopy and open circuit potential (OCP) measurements in a cyclic dry/wet accelerated laboratory test apparatus. Results show that the OCP becomes more noble as the exposed substrate area and corrosion rate increase.