期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2016
卷号：7
期号：2
页码：566-578
出版社：University of Mohammed Premier Oujda
摘要：The oil of T. vulgaris, analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC– MS) was made. The analyzed oils consist mainly in monoterpene hydrocarbons, with Thymol (41.39%), gamma terpinene (22.25%) and p-cymene (15.59%) being the major constituents, on the corrosion of mild steel in molar hydrochloric acid studied by weight loss measurements, potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) measurements. The results obtained reveal that oil reduces the corrosion rate. The inhibition efficiency increases with the increase of inhibitor concentration. Potentiodynamic polarisation studies clearly reveal that the presence of the naturally inhibitor does not change the mechanism of the hydrogen evolution reaction and acts a mixed inhibitor. The effect of temperature on the corrosion behaviour of mild steel in 1M HCl with and without oil in the temperature range 308-333K, indicates that inhibition efficiency increases with temperature. The associated activation energy has been determined. The adsorption of natural products on the mild steel surface was found obey to Langmuir's adsorption isotherm
关键词：mild steel; Thyme. Vulgaris; HCl; Corrosion; Green inhibitor; GC;MS.
