Abstract
We consider a method aimed at the determination of the rate of atmospheric corrosion in metallic structures according to the polarization resistance based on the use of multielectrode sensors with cosurface location of the electrodes (applied to increase the sensitivity of measurements). The serviceability of four models of electrochemical sensors intended for the monitoring of metallic structures under the conditions of atmospheric corrosion for an atmospheric humidity of 100 % and temperatures of 24, 40, 50, and 70°C is investigated. It is shown that, by decreasing the thickness of the insulating interlayer, the width of electrodes, and their number, it is possible to increase the accuracy and sensitivity of measurements of the corrosion rate in humid atmospheres. The developed sensors prove to be suitable for the purposes of monitoring of the corrosion rate in metallic structures operating under the atmospheric conditions, including closed volumes.
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