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Corrosion inhibition of copper in tetra‐ n ‐butylammonium bromide aqueous solution by benzotriazole
Author(s) -
Liu S.,
Duan J. M.,
Jiang R. Y.,
Feng Z. P.,
Xiao R.
Publication year - 2011
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.200905494
Subject(s) - benzotriazole , aqueous solution , copper , adsorption , bromide , inorganic chemistry , dielectric spectroscopy , corrosion inhibitor , langmuir adsorption model , chemistry , electrochemistry , materials science , nuclear chemistry , corrosion , electrode , organic chemistry
The corrosion inhibition behavior of benzotriazole (BTA) on copper in 17 wt% tetra‐ n ‐butylammonium bromide (TBAB) aerated aqueous solution was investigated by weight‐loss tests, potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy/energy dispersive X‐ray spectroscopy. BTA is a good inhibitor in 17 wt% TBAB solution. The inhibition efficiency of BTA increases with increasing inhibitor concentration, attaining efficiencies of up to 90% calculated according to different methodologies. Adsorption of BTA in 17 wt% TBAB solution on the copper surface was found to obey the Langmuir adsorption isotherm.