Abstract
The inhibition synergistic effect between imidazoline and thiourea for carbon steel in CO_2 saturated brine solution was investigated by using weight-loss method, polarization curves measureament and XPS. The results showd that the inhibition efficiency increased significantly when imidazoline derivative was added as a corrosion inhibitor in the solution together with thiourea. The N and S atoms in the inhibitor film adsorbed on the surface of carbon steel, and N atoms predominated in the film near the solution and decreased gradually with the film depth and finally S atoms were the major element in the film near the matrix. It was concluded that imidazoline and thiourea could form a cage complex which adsorbed on the surface of steel and provided a compact film and a better inhibition.
Keywords
Corrosion inhibitor, Synergistic effect, Imidazoline derivative, Thiourea, Sour corrosion
Publication Date
2004-11-28
Online Available Date
2004-11-28
Revised Date
2004-11-28
Received Date
2004-11-28
Recommended Citation
Jing-mao ZHAO, He-xia LIU, Wei DI, Yu ZUO.
The Inhibition Synergistic Effect Between Imidazoline Derivative and Thiourea[J]. Journal of Electrochemistry,
2004
,
10(4): 440-445.
DOI: 10.61558/2993-074X.1599
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol10/iss4/12
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