Corrosion inhibition of copper in neutral chloride media by a novel derivative of 1,2,4-triazole

Corrosion inhibition of copper in neutral chloride media by a novel derivative of 1,2,4-triazole

► Bis-(4-amino-5-mercapto-1,2,4-triazol-3-yl)-butane (BAMTB) used as a corrosion inhibitor for copper in neutral NaCl media. ► Excellent efficiency, even better than benzotriazole. ► A thin protective film with a copper–sulfur bond is responsible for the good inhibition. The efficiency of a new corr...

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Bibliographic Details
Published in:Corrosion science Vol. 53; no. 10; pp. 3092 - 3099
Main Authors: Khiati, Z., Othman, A.A., Sanchez-Moreno, M., Bernard, M.-C., Joiret, S., Sutter, E.M.M., Vivier, V.
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 01-10-2011
Elsevier
Subjects:
A. Copper
Applied sciences
B. EIS
B. Polarization
B. Raman spectroscopy
C. Neutral inhibition
Chemical Sciences
CHLORIDES
Copper
CORROSION
Corrosion environments
CORROSION INHIBITORS
Corrosion prevention
Derivatives
Electrochemical impedance spectroscopy
Exact sciences and technology
Inhibition
Metals. Metallurgy
Other
Scanning electron microscopy
SODIUM CHLORIDE
TRIAZOLE
B. Raman spectroscopy
B. EIS
B. Polarization
A. Copper
C. Neutral inhibition
Neutral medium
Corrosion
Raman spectrometry
Impedance
Corrosion protection
Corrosion inhibitor
Copper chloride
Polarization
Raman spectroscopy
Copper
Neutral inhibition
EIS
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Summary:► Bis-(4-amino-5-mercapto-1,2,4-triazol-3-yl)-butane (BAMTB) used as a corrosion inhibitor for copper in neutral NaCl media. ► Excellent efficiency, even better than benzotriazole. ► A thin protective film with a copper–sulfur bond is responsible for the good inhibition. The efficiency of a new corrosion inhibitor, the bis-(4-amino-5-mercapto-1,2,4-triazol-3-yl)-butane (BAMTB), on copper was investigated in an aerated 3% NaCl solution using various techniques. Voltammetry, chronopotentiometry and electrochemical impedance spectroscopy (EIS) were performed to evaluate the inhibition efficiency of BAMTB. The surface layers were also characterized by Raman micro-spectroscopy and by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX). Potentiodynamic polarization curves showed that BAMTB is a mixed-type inhibitor for copper in neutral chloride solution and is even more efficient than the reference compound benzotriazole.
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2011.05.042