In the present study the influence of movement of the solution on the characteristics of measured electrochemical noise (EN) has been investigated. For this reason the measurements were performed in still solution, as well as in movement of electrolyte. In order to relate measured EN to the development of corrosion processes, digitized images of the electrodes were recorded continuously during these measurements. It was found that the characteristics of EN, in general, change significantly with strong movement of the solution: stirring, or laminar flow. The results of this study confirmed that main source for this
change is transformation of corrosion processes: in a still solution the corrosion process tends to be localized, whereas during strong movement of the electrolyte this tendency is oriented towards uniform corrosion. It was established that the direct effect of the electrolyte movement on measured EN (modulation of signals due to
spatio-temporal flow disturbances) is small. Keywords: potential noise, current noise, digitized images, stirring, laminar flow, general corrosion, localized corrosion, spectral analysis