期刊
CORROSION SCIENCE
卷 47, 期 12, 页码 3280-3299出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2005.05.047
关键词
alkaline corrosion; pitting corrosion; electrochemical noise; aluminium; inhibition; passivity
In this paper, electrochemical noise measurements on aluminium AA2014 are reported. Samples were exposed to a range of solutions to promote different corrosion rates and mechanisms. Subsequently, statistical parameters (electrochemical noise resistance, coefficient of variation of current and localization index) and parameters derived from shot noise theory (the low frequency limit of the amplitude of the noise impedance, Z(n,f -> 0), the average charge in each event, q, and the frequency of events, f(n)) were obtained and related with the type and rate of corrosion. Finally, pairs of shot noise parameters were represented in maps to relate their values with the corresponding corrosion rates and mechanisms. (c) 2005 Elsevier Ltd. All rights reserved.
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