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Date of Publication:2022-10-06

Journal:中国腐蚀与防护学报

Volume:34

Issue:2

Page Number:160-164

ISSN No.:1005-4537

Abstract:The local pitting corrosion behavior of the pure aluminum in 3.5% NaCl
   solution was characterized by electrochemical noise analysis technique.
   The corrosion processes for aluminum were studied in detail by analyzing
   time-domain and frequency-domain characteristics of electrochemical
   noise together with morphology features. The results show that the
   time-domain spectroscopy of the electrochemical noise can be used to
   predict the occurrence of local corrosion and qualitatively distinguish
   the type of corrosion. It was found that the current standard deviation
   sigma_I, noise resistance R_n and current white noise levels W can
   reflect the corrosion intensity. When the corrosion occurs, sigma_I and
   W tend to increase, but R_n tends to decrease.

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