Journal
CORROSION SCIENCE
Volume 110, Issue -, Pages 1-14Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.04.017
Keywords
Steel; Galvanic corrosion; Multi-channel electrode technique; EN; Inhomogeneous elastic stress
Funding
- National Natural Science Foundation of China [50921001, 51221961, 51379031]
- National Program on Key Basic Research Project of China [2011CB013704]
- Project of High Technology Ship of Chinese Ministry of Industry and Information Technology
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In-situ corrosion characterization of Q235 steel under inhomogeneous elastic stress in 3.5% NaCl solution was investigated by zero resistance ammeter and electrochemical noise techniques combined, with a newly developed multi-channel working electrode and reference electrode system. The galvanic corrosion, resulted from the so-called stress cell with the higher stress locations as anodes relative to the low stress locations, could be induced by the applied inhomogeneous elastic stress. The distribution and intensity of anodic and cathodic areas in galvanic corrosion were shown to be a function of corrosion time. The effect of corrosion products on the corrosion behaviour was also discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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