Novel 1, 3, 5-triazine derivative is a highly efficient inhibitor of corrosion of Q235 carbon steel in an acidic medium

被引：8
作者：
Wei, Cunhua [1 ]
Xu, Ge [1 ]
Yu, Jin [1 ]
机构：
[1] Shenyang Univ Technol, Sch Environm & Chem Engn, Shenliao West Rd 111, Shenyang 110870, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2022年 / 73卷 / 07期
关键词：
corrosion inhibitions; lauramide groups; Q235 carbon steels; synergistic effect; triazine derivatives; MILD-STEEL; SCHIFF-BASE; ALLOY;
D O I：
10.1002/maco.202113020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel triazine derivative, 2, 4-diamino-6-dodecamido-1, 3, 5-triazine (DT), is synthesized by the dehydration condensation of melamine and lauric acid, and its inhibitive performances for the corrosion of Q235 carbon steel in 1 mol/L HCl solution is investigated by electrochemical polarization, electrochemical impedance spectroscopy, scanning electron microscopy, and atomic force microscope. The results reveal that its best inhibition efficiency reaches 96.98% at a concentration of 2.5 g/L. The calculation results of kinetic and thermodynamic parameters indicate that the adsorption of DT on carbon steel surface obeys Langmuir adsorption isotherm with both physical and chemical adsorption. It is demonstrated that long-chain amide (>8C) substituted 1, 3, 5-triazine derivative has the synergistic corrosion inhibition effect of the surface fixation on metal iron and the hydrophobic adsorption layer.
引用
收藏
页码：1153 / 1162
页数：10
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