期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：3
页码：972-981
出版社：University of Mohammed Premier Oujda
摘要：The inhibitive effect of M. piperita and M. pulegium essential oils on the corrosion behavior of mild steel in 1M HCl was studied using the weight loss measurements, polarization curves, and electrochemical impedance spectroscopy techniques. The inhibition efficiency was found to be dependent on the concentration of the essential oil obtained from both plants. Results showed that these essential oils act as a mixed-type inhibitor. The charge transfer resistance increases, while the double layer capacitance decreases by increasing the essential oil concentration of both plants. The presence of such essential oil may have enhanced their adsorption on the metal surface and thereby blocked the surface and protected the metal from corrosion. The results of the electrochemical methods were in good agreement with the weight loss measurement results. These essential oils antibacterial activity was evaluated using the microdilution method against one gram positive and one Gram negative bacteria. M. piperita and M. pulegium essential oils showed satisfactory activities against S. epidermis, E. coli DH5α.
关键词：M. piperita; M. pulegium; Mild steel; Acid corrosion; extract oil; EIS
