Electrochemical noise for corrosion detection

Abstract

In the last years, a growing interest on the use of Electrochemical Noise (EN) for corrosion studies may be detected in the main literature. As a result of this, several methods for analyzing noise data have been developed.\ud In this paper a review of the investigative possibilities offered by EN in the field of corrosion is given.\ud All the experimental data reported are from research projects developed in our laboratory where, for more than 15 years, EN has been applied to the solution of different corrosion problems and some dedicated software have been developed for EN data analysis (FFT-MEM, PSD slope detection, discriminant analysis). Much attention will be given to the use of statistical parameters and their significance in terms of corrosion behavior of the electrode.\ud Moreover, the experimental caution to use in order to have meaningful data will be highlighted

The Use of a Time-Frequency Transform for the Analysis of Electrochemical Noise for Corrosion Estimation

“…erefore, this technique is considered a noninvasive online technique used for monitoring corrosion in different fields [29][30][31].…”

The Application of Electrochemical Noise for the Study of Metal Corrosion and Organic Anticorrosion Coatings: A Review

“…For the steel passivated by sodium phosphate, the noise resistance R n obtained from the electrochemical noise and the polarization resistance obtained from the linear polarization in the NaCl solution were in well agreement (Figure 7). [26] Therefore, the corrosion tendency of materials could be predicted by electrochemical noise technology. The presence or absence of passivator caused changes in the characteristics of the PSD curve.…”