FIELD: physics.SUBSTANCE: invention relates to the solid state physics studying visual aids and its applications to the corrosion process. Electrode is placed into the electrolyte aqueous solution. Linearly changing the electrode potential in the cathode and anode directions. Setting the alternating current through the electrode. At the alternating current frequency, recording the electrode oscillations amplitude. Representing this amplitude as the estans, equal to the derivative of the electrode surface tension over the surface charge density. Recording the estans modulus dependence on the electrode potential. With the potential sweep cathode direction, finding the estans modulus change following stages: linear growth, sudden decline, exceeding linear growth in steepness, minimum and peak. Showing the estans modulus linear growth and the sudden decline reversibility. Reversible charging stage is completed with increase in the electrons consumption in the oxides reduction electrochemical reaction.EFFECT: meth
