Corrosion inhibition of cold rolled steel in 0.5M H2SO4 by potassium iodide | Abstract

Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

ISSN: 0975-413X
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Corrosion inhibition of cold rolled steel in 0.5M H2SO4 by potassium iodide

Author(s): Tarik Attar, Lahcène Larabi, Yahia Harek

The inhibition of the corrosion of cold rolled steel in 0.5 M H2SO4 solution by potassium iodide has been investigated by using weight loss. The results show that KI as a good inhibitor, and its maximum inhibition efficiency is higher than 90% even at low concentration.The temperature effect on the corrosion behaviour of the cold rolled steel with and without the inhibitor was studied in the temperature range (293-323K). Some thermodynamic functions of dissolution and adsorption processes were also determined. The adsorption of the inhibitor on the cold rolled steel surface is in agreement with Langmuir adsorption isotherm.


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