THE EFFECT OF ENVIRONMENTALLY BENIGN FRUIT EXTRACT OF SHAHJAN (MORINGA OLEIFERA) ON THE CORROSION OF MILD STEEL IN HYDROCHLORIC ACID SOLUTION
作者： Ambrish Singh , I. Ahamad , D. K. Yadav , V. K. Singh , M. A. Quraishi
DOI: 10.1080/00986445.2011.570390
关键词: Langmuir adsorption model 、 Dielectric spectroscopy 、 Moringa 、 Tafel equation 、 Hydrochloric acid 、 Adsorption 、 Chemistry 、 Enthalpy 、 Corrosion 、 Inorganic chemistry
摘要: The inhibition of the corrosion mild steel in hydrochloric acid solution by fruit extract shahjan (Moringa oleifera) was studied using weight loss, electrochemical impedance spectroscopy (EIS), linear polarization, and potentiodynamic polarization techniques (Tafel). Inhibition found to increase with increasing concentration extract. effect temperature, immersion time, on behavior solutions addition also studied. occurred via adsorption inhibitor molecules surface obeying Langmuir isotherm. Thermodynamic activation parameters such as energy, enthalpy (ΔH*), entropy (ΔS*) for process were calculated discussed. results obtained show that both chemical physical occur simultaneously could serve an ef...
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