METHOD OF ELECTROCHEMICAL DETERMINATION OF RATE OF CORROSION OF METAL WITH DIELECTRIC COATING AND DEVICE FOR ITS ACCOMPLISHMENT Russian patent published in 1994 - IPC

FIELD: corrosion analyses. SUBSTANCE: electrochemical cell with working and auxiliary electrodes is used, an axial hole is made in the working electrode on the side of the metal under analysis, the capillary of comparison electrode is tightly fitted with its end the boundary between the protective coating and surface of the working electrode. The capillary of the comparison electrode is filled with mass of a fine dispersed mixture of cation exchange and anion exchange resins with organic binders. The cell is connected to a source of external polarization and the parameter is determined by which the rate of corrosion is judged. EFFECT: enhanced accuracy owing to decreasing influence of potential resistive component. 2 cl, 3 dwg