Adsorption characteristics of corrosion inhibitors from corrosion rate measurements

Corrosion rate data have been used for the determination of the adsorption parameters of the Frumkin isotherm in the system steel/acid solution/inhibitor. The inhibitors are derivatives of benzimidazole. The maximal amount of adsorbed inhibitor, the interaction parameter a and the equilibrium consta...

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Bibliographic Details
Published in:Corrosion science 2004-07, Vol.46 (7), p.1613-1620
Main Authors: Christov, M., Popova, A.
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Benzimidazoles
Corrosion
Corrosion environments
Corrosion inhibition
Corrosion mechanisms
Corrosion prevention
Exact sciences and technology
Frumkin isotherm
Metals. Metallurgy
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Summary:Corrosion rate data have been used for the determination of the adsorption parameters of the Frumkin isotherm in the system steel/acid solution/inhibitor. The inhibitors are derivatives of benzimidazole. The maximal amount of adsorbed inhibitor, the interaction parameter a and the equilibrium constant B of the isotherm are found simultaneously by using the SOLVER option of Excel. The statistical analysis of the results shows that this isotherm describes well the adsorption behaviour in the systems studied.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2003.10.013