Journal
CORROSION SCIENCE
Volume 126, Issue -, Pages 272-285Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.07.009
Keywords
Coupled copper-mild steel; Multicomponent corrosion inhibitors; 1H-Benzotriazole; Sodium molybdate; Sodium phosphate
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In this study, the corrosion inhibition of 1H-benzotriazole (BTA) alone and in combination with Na2MoO4 center dot 2H(2)O and Na3PO4 center dot 12H(2)O on single and coupled copper and mild steel in artificial sea water is evaluated. EIS and polarization results in stagnant and laminar flow conditions in different immersion times indicated that persistence of protective layer formed on single mild steel in presence of BTA is lower than that of copper, though formation of a stable protective layer on coupled copper reduced galvanic corrosion. Multicomponent inhibitor showed a better efficiency compared to BTA alone through protection of both single and coupled copper and mild steel.
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