Evaluation of coating systems using impedance spectroscopy

Safety and reliability of strategic industry and military engineering structures and devices depend on corrosion and wear protection. One of the most frequently employed techniques for reducing corrosion and wear damage is application of polymer coatings. The durability and the service life of the high-performance coating systems depend on environmental impacts and is associated with irreversible physical and chemical processes. In order to select the best individual coating system for specific environment it is helpful to know the protective characteristic of coatings. Use of the impedance spectroscopy allows to determine the range of application areas and a prognosis of the coating service life. This work shows the possibility of impedance spectroscopy for determining the protective properties of high-performance coating systems used in strategic industry and military structures and devices.