Noise Resistance Applied to Corrosion Measurements: II. Experimental Tests - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Journal of The Electrochemical Society Année : 1997

Noise Resistance Applied to Corrosion Measurements: II. Experimental Tests

Résumé

Electrochemical noise (EN) measurements have been carried out on several corroding systems, utilizing the technique of simultaneous recording of current and voltage fluctuations, and calculating the frequency dependent spectral noise impedance Rsn(f) as the square root of the ratio of the power spectral densities (PSD) of the voltage to current noise. The results are compared with the theoretical predictions stemming from an analysis of the technique, which is presented in the preceding paper. It is shown that, over a quite large range of conditions, Rsn, coincides with the impedance modulus of the electrodes under study. From the relationship between Rsn and the noise resistance Rn, which is usually obtained calculating the ratio of the standard deviations of the voltage and current fluctuations, it is shown that the latter quantity can be equal to the zero frequency limit of the impedance only if certain conditions are satisfied.

Domaines

Chimie

Dates et versions

hal-04342316 , version 1 (13-12-2023)

Identifiants

Citer

Ugo Bertocci, Claude Gabrielli, François Huet, Michel Keddam, Philippe Rousseau. Noise Resistance Applied to Corrosion Measurements: II. Experimental Tests. Journal of The Electrochemical Society, 1997, 144 (1), pp.37-43. ⟨10.1149/1.1837362⟩. ⟨hal-04342316⟩
3 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More