Action of Aqueous Extract of Zygophyllum Album L Leaves on the Corrosion of Carbon Steel in Hydrochloric Acid Solution

Der Pharmacia Lettre

H. Derfouf¹ 

关键词: H. Derfouf;    H. Rouabhi;    Y. Harek;    L. Larabi;    Corrosion;    Green inhibitor;    Polarization;    EIS;    Carbon steel;   

DOI  :  

学科分类：药理学

来源: Scholars Research Library

【 摘 要 】

Corrosion inhibition of mild steel in hydrochloric acid solutions by the extract of Zygophyllum Album L (ZPAL) leaves has been studied using gravimetric measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Inhibition efficiency was found to increase with the concentration of the inhibitor to attain 89 % at 1000 mg/L of ZPAL. Polarization curves reveal that extract of Zygophyllum Album L acts as mixed type inhibitor. Changes in impedance data were indicative of the extract adsorption on the metal surface, leading to the formation of a protective film. The thermodynamic study shows that adsorption of ZPAL proceeds via physisorption mode and obeys the Langmuir adsorption isotherm.

【 授权许可】

CC BY