Aldimines — Effective Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution

被引：0
作者：
A. Subramania
N.T. Kalyana Sundaram
R. Sathiya Priya
K. Saminathan
V.S. Muralidharan
T. Vasudevan
机构：
[1] PSG College of Technology,Department of Chemistry, Faculty of Engineering
[2] Alagappa University,Department of Industrial chemistry
[3] Central Electrochemical Research Institute,undefined
来源：
Journal of Applied Electrochemistry | 2004年 / 34卷
关键词：
aldimines; corrosion inhibitors; hydrogen permeation; polarization methods; temkin adsorption isotherm;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
New and effective aldimine types of corrosion inhibitors namely, N-methylidene octylamine (MOA), N-ethylidene octylamine (EOA) and N-propylidene octylamine (POA) have been synthesized. Their inhibition efficiency was investigated for the corrosion of mild steel in 1 M HCl solution by various corrosion monitoring techniques. A preliminary screening of the inhibition efficiency of the inhibitors was carried out by weight loss and gasometric studies. They were found to behave as good inhibitors in 1 M HCl solution. Potentiodynamic polarization measurements show that aldimines are mixed type inhibitors. The extent of the decrease in the hydrogen permeation current through the mild steel surface was studied by the hydrogen permeation technique and it was found that the decrease was in the order POA > EOA > MOA. Double layer capacitance and charge transfer resistance values were derived from Nyquist plots obtained from AC impedance studies. The adsorption of these compounds on mild steel from 1 M HCl solution obeys the Temkin adsorption isotherm.
引用
收藏
页码：693 / 696
页数：3
相关论文
共 43 条
  • [11] Muralidharan S.(1985)undefined J. Electrochem. Soc. 132 290-undefined
  • [12] Iyer S.V.K.(1990)undefined Electrochim. Acta 35 150-undefined
  • [13] Devarajan G.(1981)undefined Corrosion 37 30-undefined
  • [14] Balakrishnan K.(1990)undefined Chem. Rev. 90 771-undefined
  • [15] Jayapermal D.(1992)undefined J. Electrochem. Soc. 139 3167-undefined
  • [16] Subramanian P.(undefined)undefined undefined undefined undefined-undefined
  • [17] Balakrishnan K.(undefined)undefined undefined undefined undefined-undefined
  • [18] Vasudevan T.(undefined)undefined undefined undefined undefined-undefined
  • [19] Muralidharan S.(undefined)undefined undefined undefined undefined-undefined
  • [20] Iyer S.V.K.(undefined)undefined undefined undefined undefined-undefined
12345