Noise resistance applied to corrosion measurements. 2: Experimental tests
- Univ. Pierre et Marie Curie, Paris (France). Physique des Liquides et Electrochimie
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 R{sub sn}(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, R{sub sn}, coincides with the impedance modulus of the electrodes under study. From the relationship between R{sub sn} and the noise resistance R{sub n}, 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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 452209
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 1 Vol. 144; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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