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EVALUATION OF THE PROTECTION EFFICIENCY OF 1-DECYL-3-METHYLIMIDAZOLIUM CHLORIDE IN THE CORROSION OF 36CrMo STEEL IN ACID SOLUTION (HCl)

Journal: International journal of ecosystems and ecology science (IJEES) (Vol.4, No. 1)

Publication Date:

Authors : ;

Page : 015-024

Keywords : corrosion; carbon steel; 1-decyl-3-methylimidazolium chloride; ionic liquid; inhibitor;

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Abstract

Corrosion is an important factor affecting considerably not only the time of use, but also the mechanical properties of metal objects in general. Moreover, corrosion causes economical loses and has an impact on the environment. This fenomenon is of greater importance for steel equipments and materials used in industry. In many industrial processes acid solutions are used which accelerate corrosion. In order to minimize this fenomenon different approaches have been taken, inhibitor use beeing one of them.This paper reports on the protection efficiency of an ionic liquid, 1-decyl-3-methylimidazolium chloride in the corrosion protection of 36CrMo steel in HCl solutions of different concentrations and temperatures. The corrosion velocity and protection effiecieny have been assessed using the gravimetric method. The results show that an increase in the 1-decyl-3-methylimidazolium chloride concentration results in lower corrosion velocity of the 36CrMo steel in acid environment. The protection effieciency decreased with the increase of temperature. The mechanism of corrosion protection for this inhibitor is also discussed in the paper.

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Last modified: 2013-12-04 11:21:28