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  • 标题:An investigation of carbon steel corrosion inhibition in 1 M HCl by Lepidium sativum oil as green inhibitor
  • 本地全文:下载
  • 作者:K. Chatoui ; S. Echihi ; H. Harhar
  • 期刊名称:Journal of Materials and Environmental Science
  • 印刷版ISSN:2028-2508
  • 出版年度:2018
  • 卷号:9
  • 期号:4
  • 页码:1212-1222
  • DOI:10.26872/jmes.2017.9.4.132
  • 出版社:University of Mohammed Premier Oujda
  • 摘要:The extracted lipid of Lepidium sativum L was examined for fatty acidcomposition. Oleic (22.03 g/100 g) and Linolenic (29.22 g/100 g) acids werethe predominant unsaturated fatty acids, while palmitic acid (8.03 g/100 g) wasfound as the major saturated acid. The inhibition of the corrosion of carbon steelin hydrochloric acid medium by Lepidium sativum L oil has been studied usingweight loss, electrochemical impedance spectroscopy (EIS) and Tafelpolarisation methods. Inhibition was found to increase with increasingconcentration of the oil but decreases with temperature. Polarization curvesshowed that Lepidium sativum L oil behaves as a mixed-type inhibitor. Theadsorption of the oil on the carbon steel surface obeyed the Langmuiradsorption isotherm. The thermodynamic parameters for activation processeswere calculated and discussed. Values of inhibition efficiency calculated fromweight loss, potentiodynamic polarization, and electrochemical impedancespectroscopy are in good agreement.
  • 关键词:Fatty acid;composition; Inhibition; Carbon Steel; HCl; Lepidium sativum L
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