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    Acetylsalicylic acid as an environmentally friendly corrosion inhibitor for carbon steel XC48 in chloride environment
    (Elsevier, 2023) Merimi, Chaimae; Hammouti, Belkheir; Zaidi, Kaoutar; Hafez, Baraa; Elmsellem, Hicham; Touzani, Rachid; Kaya, Savas
    In this study we evaluated the corrosion inhibition potential of an environmentally friendly, cost effective and beneficial compound on carbon steel in an acidic environment.We investigated electrochemical as well as gravimetric measurements for corrosion performance in-hibition of the acetylsalicylic acid ASA molecules used from carbon steel XC48 in HCl 1M solution. The results show that aspirin inhibits the corrosion of carbon steel in acidic environment. It was found that the inhibition efficiency of aspirin increased with increasing inhibitor concentration and decreased with increasing temperature. The maximum inhibition efficiency was 96% with 5 x10 -3 M aspirin at 308 K. The inhibition efficiency increased with increasing concentration of ASA. This inhibitor adsorbs on the metal surface according to the Langmuir model and a physical adsorption mechanism is proposed for the adsorption of the inhibitor on the carbon steel surface, the scanning electron microscopy (SEM), the Thermodynamic and the kinetic parameters were calculated and discussed.(c) 2022 Elsevier B.V. All rights reserved.
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    Iron-ligand complex, an efficient inhibitor of steel corrosion in hydrochloric acid media
    (Elsevier, 2023) Zaidi, Kaoutar; Bouroumane, Nadia; Merimi, Chaimae; Aouiniti, Abdelouahad; Touzani, Rachid; Oussaid, Adyl; Hammouti, Belkheir
    The inhibitor effect of FeSO4(Hdpz) complex prepared from iron (II) sulfate7-hydrate and 1-Hydroxymethyl-3,5-dimethylpyrazole on corrosion of mild steel in 1 M hydrochloric acid (HCl) at 308 K was investigated using measurements of weight loss and electrochemical techniques (impedance spec-troscopy and polarization curves). Inhibition efficiency depends on the concentration of complex [FeSO4 (Hdpz)] and its inhibition efficiency increases with an increase in inhibitor concentration to 98% for 10 -3 M. Polarization curves show that the complex FeSO4(Hdpz) basically functions as a mixed inhibitor. Measurements of electrochemical impedance spectroscopy (EIS) indicate an increase in transfer resistance at the concentration of the inhibitor. In the temperature range of 308 to 348 K, the temperature effect on the corrosion behavior of steel in 1 M HCl without and with the inhibitor at 10 -3 M was studied and the corresponding activation energy was calculated. Adsorption of FeSO4(Hdpz) complex on the mild steel surface in 1 M HCl follows the Langmuir isotherm model. The quantum approach and monte Carlo simulation was confirmed the reactivity of the studied compound towards the corrosion process. (c) 2023 Published by Elsevier B.V.