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Validation of Electrochemical Noise Measurements
CORROSION 2012, 2012Abstract Electrochemical noise measurement is established as a means of estimation of corrosion rate, and methods for the identification of localized corrosion have been proposed. Many of these methods make the assumption that two electrodes used to measure current noise have similar behavior; this paper examines tests based on measured ...
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Electrochemical noise at passive iron
Electrochimica Acta, 1988Abstract With the apparatus described it was possible to measure under potentiostatic conditions at frequencies up to about 1 kHz spectral densities of current noise comparable to the thermal noise at resistances of the order M Ohm. The spectral densities of the current noise at passive iron microelectrodes in neutral borate or acetate buffer ...
K. Nachstedt, K.E. Heusler
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Evaluation of Corrosion Inhibitors by Electrochemical Noise Analysis
Journal of The Electrochemical Society, 1992The corrosion potential fluctuations of aluminum alloy AA 6351 electrodes in 0.5M chloride solutions were recorded both in the absence and in the presence of the following inhibitors: 2-mercaptopyrimidine, sodium molybdate, and sodium nitrate. The corresponding spectral density plots, calculated over a wide frequency range, are discussed in order to ...
MONTICELLI, Cecilia +3 more
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On the determination of electrochemical noise resistance
Metals and Materials International, 2009The effects of sampling duration and sampling frequency on noise resistance were investigated for Type 316 stainless steel in accordance with a standard procedure employed in polarization resistance measurements. Noise resistance was also determined by wavelet transform and compared with that from AC impedance measurements. An optimum sampling duration
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A crevice corrosion study by Electrochemical Noise Analysis
Materials and Corrosion, 2000The use of the Electrochemical Noise Analysis (ENA) for the evaluation of crevice corrosion is illustrated in the case of AISI 430 stainless steel in 3% sodium chloride. A crevice former was used in order to induce a crevice corrosion attack. Current and potential noise signals were simultaneously recorded allowing the determination of the noise ...
GUSMANO, GUALTIERO +2 more
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THE USE OF ELECTROCHEMICAL NOISE ANALYSIS ON CORRODING SYSTEMS
Fluctuation and Noise Letters, 2004This paper gives an overview of the use of Electrochemical Noise (EN) for corrosion studying and monitoring. Since the quality and reliability of noise data are affected by a number of acquisition parameters, such as sampling interval, sampling duration, D.C. trend and instrumental noise, some experimental and practical aspects were discussed. The use
MONTESPERELLI, GIAMPIERO +1 more
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Pattern formation in noise-reduced electrochemical deposition
Physical Review E, 1993Noise-reduced electrodeposition is performed in an agarose gel medium containing ${\mathrm{CuSO}}_{4}$ solution. Instead of random fractal-like patterns usually seen in ${\mathrm{CuSO}}_{4}$ aqueous solution electrodeposition, the deposit shows a more ordered morphology. The dendritic pattern with an evident main stem can be seen.
, Wang, , Ming, , Bennema
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Electrochemical Noise - Guidance for Improving Measurements and Data Analysis
CORROSION 2018, 2018Abstract From the results of the three Round-Robin tests on electrochemical noise (EN) measurements with dummy cells performed between 2014 and 2017 by the European Cooperative Group on Corrosion Monitoring of Nuclear Materials, it can be concluded that only very few commercial potentiostats are able to perform valid EN measurements ...
Huet, François, Ngo, Kieu
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Electrochemical Noise as a Diagnostic Tool for PEMFC
Fuel Cells, 2016AbstractA promising direction for improving proton exchange membrane fuel cells (PEMFCs) is the increase of their reliability and operating time without failure. Therefore, the problem of a reliable diagnostic tool is important. It has been theoretically deduced that a non uniform current distribution causes the increase of power spectral density of ...
E. S. Denisov +4 more
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Characteristic Electrochemical Noise During Electrochemical Determination of Hydrogen Permeation
CORROSION 2006, 2006Abstract The Devanathan-Stachurski cell is used to measure hydrogen flux through a metal. The cell consists of galvanostatic cell in which hydrogen is generated on the specimen surface, and an oxidative cell in which the hydrogen oxidation current is measured to determine the hydrogen flux.
Karthik H. Subramanian +2 more
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