Improved Accelerated Corrosion Testing of Zinc-Rich Primers

An improved method of accelerated testing reduces the time needed to analyze the abilities of zinc-rich primers to protect steel substrates against corrosion in a seacoast environment. In this method, specimens are placed in racks where they are exposed to the environment. From time to time, the specimens are brought to a laboratory, where they are tested by electrochemical impedance spectroscopy (EIS). The specimens are then returned to the racks for further exposure.