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98378 MEASUREMENT OF ELECTROLYTE RESISTANCE FLUCTUATIONS IN CORROSION APPLICATIONS

Product Number: 51300-98378-SG
ISBN: 98378 1998 CP
Author: F. Huet, C. Kuntz, H. Takenouti
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Current and potential fluctuations of corroding systems are now currently measured in cells with two working electrodes. In many cases these fluctuations look like background noises, so that determining the corrosion process at the origin of the noise is hardly possible. In this paper, it is shown that the fluctuations of the electrolyte resistance of both working electrodes can be measured simultaneously with the current and potential fluctuations. As illustrated for UNS A92024 T351 aluminum alloy corrosion, the electrolyte resistance fluctuations provide new information on the phenomena involved in the corrosion process. Keywords: electrochemical noise, electrolyte resistance fluctuations, aluminum alloy, exfoliation corrosion, pitting corrosion, hydrogen bubble evolution.
Current and potential fluctuations of corroding systems are now currently measured in cells with two working electrodes. In many cases these fluctuations look like background noises, so that determining the corrosion process at the origin of the noise is hardly possible. In this paper, it is shown that the fluctuations of the electrolyte resistance of both working electrodes can be measured simultaneously with the current and potential fluctuations. As illustrated for UNS A92024 T351 aluminum alloy corrosion, the electrolyte resistance fluctuations provide new information on the phenomena involved in the corrosion process. Keywords: electrochemical noise, electrolyte resistance fluctuations, aluminum alloy, exfoliation corrosion, pitting corrosion, hydrogen bubble evolution.
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