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Electrochemical noise data in the presence of different corrosion types were analyzed.A correlation between the corrosion type of the observed noise and the entropy rate was recognized.A sequence was transformed from each set of original electrochemical noise signal,then the Markov process M and stationary distribution l were calculated.Finally,entropy rate of each sequence was obtained by the definition.From the entropy rate,it has been observed that local corrosion showed a lower entropy rate,while uniform corrosion showed a higher entropy rate.
Electrochemical noise data in the presence of different corrosion types were analyzed. A correlation between the corrosion type of the observed noise and the entropy rate was recognized. A sequence was transformed from each set of original electrochemical noise signal, then the Markov process M and stationary distribution l were calculated .Finally, entropy rate of each sequence was obtained by the definition.From the entropy rate, it has been observed that local corrosion showed a lower entropy rate, while uniform corrosion showed a higher entropy rate.