期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：6
页码：1691-1702
出版社：University of Mohammed Premier Oujda
摘要：The influence of indole and 2-oxyindole on the corrosion rate of α-brass in 1M HNO 3 was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) tech niques. It was found that the investigated compounds behave as inhibitors. The inhibition efficiency increases with increasing the inhibitor concentration, but decreases with increasing the temperature. The adsorption of these compounds on the α-brass surface follo ws Langmuir's adsorption isotherm. The electrochemical results indicated that all the investigated compounds act as mixed-type inhibitors. Some thermodynamic parameters for corrosion processes were determined and discussed. The results obtained from chemical and electrochemical techniques were in good agreement.
关键词：Corrosioninhibition; α;brass; HNO ; 3 ; ; Indole; oxyindole; EIS
