Work

Inhibitive Effect of Azorubine Dye on the Corrosion of Mild Steel in Hydrochloric Acid Medium and Synergistic Iodide Additive

Year: 2012

Type: article

Abstract: The inhibition performance of Azorubine dye (AZB) on mild steel corrosion in hydrochloric acid solution was studied at 303-333K using weight loss and hydrogen evolution techniques. The effect of inhibitor concentration on inhibition efficiency has been studied. Inhibition efficiency increased and corrosion rate decreased with increase in concentration of AZB. The adsorption of AZB on mild steel obeyed the Langmuir adsorption isotherm model. Physical adsorption is proposed from the values of Ea and ΔGads obtained. Synergism parameter evaluated was found to be greater than unity for all concentrations of AZB suggesting that the increase in the inhibition efficiency of inhibitor by the addition of halide ion is only due to the synergism.

Source: International Journal of Electrochemical Science

DOI: 10.1016/s1452-3981(23)19603-9

Authors: Sudhish K. Shukla, Ashish K. Singh, Lutendo C. Murulana, Mwadham M. Kabanda, Eno E. Ebenso

Institution: North-West University

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,670

Funders: National Research Foundation, North-West University