席夫碱基咪唑啉化合物对A3钢在盐酸介质中缓蚀性能研究

中国腐蚀与防护学报

2006, Vol. 26

Issue (6): 336-341

研究报告

本期目录 | 过刊浏览

席夫碱基咪唑啉化合物对A3钢在盐酸介质中缓蚀性能研究

朱丽琴

新疆大学化学与化工学院

IMIDAZOLINESON’S CORROSION INHIBITION IN ACIDE SOLUTION FOR A3 STEEL

新疆大学化学与化工学院

全文: PDF(339 KB)

摘要: 合成了BIA、BIOHA、BIMHA和BIMMA4种席夫碱基咪唑啉化合物.用失重法和电化学方法研究了4种席夫碱基咪唑啉化合物对A3钢在盐酸介质中的缓蚀性能和吸附行为.结果表明,在1mol/LHCl介质中4种化合物对A3钢均有缓蚀作用,它们的缓蚀能力大小为:BIA>BIMMA>BIOHA>BIMHA. 4种化合物均属于混合型缓蚀剂,但对阳极的缓蚀性能略大于对阴极的缓蚀性能.4种化合物在A3钢表面上的吸附过程为放热过程,其在A3钢表面上的吸附行为服从Langmuir吸附等温式,属于物理吸附.

关键词 ：缓蚀剂, A3钢, 咪唑啉, 盐酸

Abstract：BIA, BIOHA, BIMHA and BIMMA were synthesized in the laboratory and their influence on the inhibition of corrosion of A3 steel in 1 mol/L HCl solution was studied by weight loss and electrochemical measurements. The obtained result showed that four compounds were good inhibitors and performed pretty inhibiting efficiency for A3 steel in 1 mol/L HCl solution. The inhibition efficiency of the tested compounds was found to decrease as follows: BIA>BIMMA>BIOHA>BIMHA. It was found that the inhibition efficiency increases with an increase in the tested compounds concentration but decreases with an increase in temperature. Compounds were imxed - type corrosion inhibitors, but its inhibition of the anodic reaction is a little better. Thermodynamic paarameters such as adsorption heat, adsorption entropy and adsorption free energy were obtained from experimental data of the inhibition process at four temperatures ranging from 40℃ to 70℃. The adsorption processes are exothermic reaction and belong to physical adsorption. The langmuir isotherm is followed.

Key words： inhibitor A3steel imidazoline HCl

收稿日期: 2005-07-18

ZTFLH:

O646.6

通讯作者: 朱丽琴 E-mail: azhuliqin@163.com

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引用本文:

朱丽琴 . 席夫碱基咪唑啉化合物对A3钢在盐酸介质中缓蚀性能研究[J]. 中国腐蚀与防护学报, 2006, 26(6): 336-341 .

链接本文:

https://www.jcscp.org/CN/Y2006/V26/I6/336

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