International Journal of Electrochemical Science, 2012
ABSTRACT The inhibition performance of Azorubine dye (AZB) on mild steel corrosion in hydrochlori... more 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 E a and ΔG ads 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.
International Journal of Electrochemical Science, 2012
ABSTRACT The inhibition performance of Azorubine dye (AZB) on mild steel corrosion in hydrochlori... more 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 E a and ΔG ads 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.
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