盐酸介质中1-丙基-2-甲基-3-烷基苯并咪唑盐对Q235钢的缓蚀作用

中国腐蚀与防护学报

2012, Vol. 32

Issue (2): 168-172

研究报告

本期目录 | 过刊浏览

盐酸介质中1-丙基-2-甲基-3-烷基苯并咪唑盐对Q235钢的缓蚀作用

李相旭,杨文忠

南京工业大学理学院南京 210009

INHIBITION OF 1-PROPYL-2-METHYL-3-ALKYL BENZIMIDAZOLE ON Q235 STEEL IN HCl SOLUTION

LI Xiangxu, YANG Wenzhong

College of Science, Nanjing University of Technology, Nanjing 210009

全文: PDF(750 KB)

摘要: 合成了不同烷基链长的1-丙基-2-甲基-3-烷基苯并咪唑盐，通过动电位极化曲线、电化学阻抗谱和扫描电镜等方法研究其对Q235钢在1 mol/LHCl中的缓蚀作用。结果表明，1-丙基-2-甲基-3-烷基苯并咪唑盐对Q235钢在盐酸溶液中具有优异的缓蚀性能，其中1-丙基-2-甲基-3-十四烷基苯并咪唑盐的缓蚀性能最好，当浓度达到10mg/L时缓蚀率达98.6%，是以阴极型为主的混合型缓蚀剂。

关键词 ：缓蚀剂, 苯并咪唑, 极化, 电化学阻抗谱

Abstract：ANew corrosion inhibitors 1-propyl-2-methyl-3-alkyl benzimidazole salts were synthesized and their inhibition for Q235 steel in 1 mol/L HCl solution were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Meanwhile, the surface morphology was studied by scanning electron microscopy(SEM). The results showed that benzimidazole salts had excellent inhibiting efficiency at very low concentration and the inhibiting efficiency increased with the increase of alkyl chain. 1-propyl-2-methyl-3-tetradecyl benzimidazole salts had the highest efficiency among four inhibitors, in which the inhibition efficiency reached up to 98.6% at the concentration of 10 mg/L. These inhibitors acted as mixed inhibitors with cathodic inhibition as dominative action.

Key words： inhibitor benzimidazole polarization electrochemical impedance spectrum

收稿日期: 2011-01-18

ZTFLH:

TG174.42

通讯作者: 杨文忠 E-mail: yangwz@njut.edu.cn

Corresponding author: YANG Wenzhong E-mail: yangwz@njut.edu.cn

作者简介: 李相旭，男，1984年生，硕士生，研究方向为金属腐蚀与防护及水处理

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引用本文:

李相旭,杨文忠. 盐酸介质中1-丙基-2-甲基-3-烷基苯并咪唑盐对Q235钢的缓蚀作用[J]. 中国腐蚀与防护学报, 2012, 32(2): 168-172.
LI Xiang-Xu, YANG Wen-Zhong. INHIBITION OF 1-PROPYL-2-METHYL-3-ALKYL BENZIMIDAZOLE ON Q235 STEEL IN HCl SOLUTION. J Chin Soc Corr Pro, 2012, 32(2): 168-172.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2012/V32/I2/168

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