Corrosion inhibition effect of magnolia grandiflora leaves extract on mild steel in acid solution

Li, Beiyao; Wang, Wen; Chen, Liping; Zheng, Xiaofeng; Gong, Mali; Fan, Jinlong; Tang, Liqin; Shi, Qingxiu; Zhu, Guijie

doi:10.1016/j.ijoes.2023.100082

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Cited by 11 publications

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“…The inhibition efficiency (η i %) through the corrosion current was calculated using the following equation [14]…”

Section: Methodsmentioning

confidence: 99%

Bulletin WKU

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Annotation.In present work,the inhibitor properties of Lepidiumruderale L. aqueous extract (LRAE) was investigated by weight loss measurements and electrochemical techniqueson the corrosion of carbon steel in typical acidic and saline media. It was established that the inhibitor efficiency of the LRAE reaches up to 91.05, 92.03, 93.84% in 1.0 mol/L hydrochloric, sulfuric, and phosphoric acids solutions respectively. Inhibition wasfound to increase with increasing in concentration of LRAE. In all tested media, the adsorption of the inhibitor molecules on metal surface was in accordance with Langmuir model and the high efficiency wasachieved due to the spontaneous physisorption (ΔG 0 abs ˃ -20 kJ/mol). Polarization curves revealed that LRAE act as a mixed type inhibitor and the inhibition efficiency of up to 95.34% can be obtained. Electrochemical data are in great agreement with gravimetrical experiment.

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“…The inhibition efficiency (η i %) through the corrosion current was calculated using the following equation [14]…”

Section: Methodsmentioning

confidence: 99%