Curcuma Zedoaria Extract as a Novel Corrosion Inhibitor for Mild Steel in ۰.۵ M H۲SO۴

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 168

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شناسه ملی سند علمی:

JR_IJAC-9-1_003

تاریخ نمایه سازی: 1 مرداد 1401

چکیده مقاله:

In this study, curcuma zedoaria extract was investigated as a mild steel (MS) corrosion inhibitor in ۰.۵ M H۲SO۴ solution by conventional methods of weight loss (WL), electrochemical impedance spectroscopy (EIS) and polarization at ۲۵ °C. The highest percentage of inhibition was obtained for the concentration of ۰.۵ g/l of curcuma zedoaria extract. The results of polarization method showed that curcuma zedoaria extract acts as a mixed inhibitor. Examination of MS immersion time by weight loss method showed that with increasing immersion time, the inhibitory effect decreases in low concentrations of curcuma zedoaria extract but in higher concentrations of curcuma zedoaria extract (concentration ۱.۰ g/L), the inhibitory effect remains almost constant over time. The effect of temperature on the performance of curcuma zedoaria extract by electrochemical polarization method in the temperature range of ۳۵-۶۵ °C shows a decrease in inhibition percentage with increasing temperature. Adsorption of curcuma zedoaria extract molecules on the surface of MS at all studied temperatures follows the Langmuir adsorption isotherm. Using the results of kinetic and thermodynamic calculations, the adsorption of molecules of curcuma zedoaria extract on the surface of MS physical adsorption type was observed.

نویسندگان

Nasrin Soltani

Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Nahid Tavakkoli

Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Maryam Khayatkashani

Talae Sabz Tuba Pharmaceutical, Tehran, Iran; School of Traditional Medicine, Tehran University of Medical Sciences, Tehran, Iran

Elham Eslami

Department of Chemistry, Kazerun Branch, Islamic Azad University, Kazerun, Iran

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