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A comparative study of benzotriazole and 2‐amino‐5‐mercapto‐1,3,4‐thiadiazole as Copper corrosion inhibitors in acid media
Author(s) -
Bastidas J. M.,
Otero E.
Publication year - 1996
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19960470606
Subject(s) - benzotriazole , copper , corrosion , chemistry , erosion corrosion of copper water tubes , organic chemistry
In this paper the corrosion behaviour of copper in 5% (by weight) citric, sulphuric and hydrochloric acids is studied. The efficiency of 2‐amino‐5‐mercapto‐1,3,4‐thiadiazole (AMT) as a corrosion inhibitor is compared with the use of benzotriazole (BTA). The experimental techniques were weight loss, polarization curves, polarization resistance and electrochemical impedance spectroscopy. AMT showed greater inhibition efficiency than BTA in sulphuric and hydrochloric acids. In citric acid AMT and BTA show a similar behaviour.