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Electrochemical noise analysis of pitting corrosion of J55 steel in NaCl + NaHCO 3 electrolytes
Author(s) -
Zhang Jun,
Zhao Wenzhen
Publication year - 2011
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3674
Subject(s) - electrochemical noise , corrosion , electrolyte , pitting corrosion , electrochemistry , casing , metallurgy , materials science , chemistry , electrode , engineering , petroleum engineering
Electrochemical noise (EN) was used to study the pitting corrosion of J55 steel in NaCl/NaHCO 3 electrolytes. Below critical ratio for Cl − to HCO − , the corrosion rate increased with added NaCl, and conversely, decreased above that level. Also, the critical ratio was between 1 and 1.66. The PSD for potential and current noise were linear and rather gently sloped. J55 casing steel was quite sensitive to NaCl/NaHCO 3 electrolytes. Copyright © 2010 John Wiley & Sons, Ltd.