Journal
CORROSION SCIENCE
Volume 49, Issue 10, Pages 3880-3888Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2007.03.017
Keywords
Cu-30Ni alloys; EIS; polarisation; SEM; passivity
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The inhibiting effect of 2-mercaptobenzimidazole (MBI) against Cu-30Ni alloy corrosion in aerated 3% NaCl polluted by ammonia, has been developed. Potentiodynamic and electrochemical impedance spectroscopy (EIS) measurements have been applied to determine the corrosion rate. scanning electron microscopy (SEM) studied surface morphology has been used to characterise electrode surface. The obtained results indicate that MBI acts as a good mixed-type inhibitor retarding the anodic and cathodic reactions. An increase of MBI concentration leads to a decrease of corrosion rate and inhibition efficiency increase. (c) 2007 Elsevier Ltd. All rights reserved.
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