Journal
CORROSION SCIENCE
Volume 45, Issue 8, Pages 1619-1630Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0010-938X(02)00255-X
Keywords
copper; uracils; 3% NaCl solution; corrosion; inhibition
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Substituted uracils were tested as corrosion inhibitors of copper in 3% NaCl medium using electrochemical polarisation, impedance measurements and non-electrochemical techniques (weight loss, IR and UV-visible). This study permitted to follow the evolution of the inhibitory effect of the uracil derivatives, according to their substituents, on copper in 3% NaCl medium. Comparison of results showed that dithiouracil (DTUr) was the best inhibitor. The maximum inhibition efficiency reached 98% at 10(-3) M. DTUr adsorbs on the copper surface according to the Frumkin isotherm model. (C) 2003 Elsevier Science Ltd. All rights reserved.
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