Inhibitive Effect of Some Aldehydes on Corrosion ofAl-3Mg Alloy in Acid Solutions

作     者：I.Z.Selim (Physical Chemistry Dept., National Research Center, Dokki, Cairo, Egypt) 

作者机构：Physical Chemistry Dept. National Research Center Dokki Cairo Egypt 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1998年第14卷第4期

页      面：313-319页

核心收录：

学科分类：080503[工学-材料加工工程] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Champion benzaldehyde blank Adsorption Singh Pearson Chapman Egypt London 

摘      要：2M hydrochloric acid solution was used and the methods of polarization and weight loss measurements were adopted. The two methods give the same order of inhibition efficiency. Polarization studies reveal that catholic polarization is more pronounced than the anodic one. The results indicate that all the studied compounds excellent corrosion inhibitors and the percentage efficiency varying with both the type and concentration of the inhibitor and being in the following order: p- methoxy-benzaldehyde (1)benzaldehyde (2)p-chlorobenzaldehyde (3)p-nitrobenzaldehyde (4). The degree of surface coverage of the adsorbed additives was determined and the results obey the Langmuir isotherm. Effect of temperature on the corrosion rate in absence and presence of different concentrations of the used inhibitors was investigated by using weight loss measurements. The results indicate that the corrosion rate rapidly increases with increasing temperature. (Edited author abstract) 19 Refs.