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has been cited by the following article:

• TITLE: Corrosion Inhibition Properties of Norepinephrine Molecules on Mild Steel in Acidic Media

  AUTHORS: Ahmed Yahya Issa Rubaye, Hassan Thamir Abdulsahib, Ali Abdulrazzaq Abdulwahid

  KEYWORDS: Corrosion Inhibition, Adsorption, Efficiency, Langmuir Isotherm, Thermodynamic Parameters, Scanning Electron Microscopy (SEM)

  JOURNAL NAME: Journal of Encapsulation and Adsorption Sciences, Vol.5 No.3, September 16, 2015

  ABSTRACT: Inhibition performance of norepinephrine was investigated as corrosion inhibitors by Gravimetric technique and carried out with mild steel samples in 1 M hydrochloric acid solution at room temperature. Norepinephrine exhibited maximum efficiency of 79% at 500 mg/L. The results of Gravimetric studies revealed that the investigated compound acted as good corrosion inhibitor and the inhibition efficiencies increased with increase in the concentrations of the inhibitor IC. The experimental data complied with the Langmuir adsorption isotherm. Thermodynamic parameters, such as ΔGo, ΔHo, and ΔSo, were calculated using adsorption equilibrium constant obtained from the Langmuir isotherm. Results suggested that the norepinephrine adsorption on mild steel surface was a spontaneous and exothermic process. Scanning electron microscopy was used to investigate the mild steel surface at the highest corrosion inhibition studied concentration.