噻唑化合物对铜在硫酸中的缓蚀行为研究

楚雄师范学院学报 ›› 2024, Vol. 39 ›› Issue (3): 50-54.

噻唑化合物对铜在硫酸中的缓蚀行为研究

陈文, 林怡辰, 张旗麟, 黄德兴^*

楚雄师范学院资源环境与化学学院,云南楚雄 675000

收稿日期:2023-11-02 出版日期:2024-05-20 发布日期:2024-06-05
通讯作者: *黄德兴（1985–）,男,讲师,研究方向为科技教育。E-mail：dxhuang@cxtx.edu.cn,Tel. 18387853058
作者简介:陈文（1973–）,男,博士,副教授,研究方向为金属腐蚀与防护。E-mail：chenw@cxtx.edu.cn,Tel. 18387294609
基金资助:
云南省2022年大学生创新创业训练项目（No. 202211391054）

Inhibition Behavior of Thiazole Compounds on Copper in Sulfuric Acid

CHEN Wen, LIN Yichen, ZHANG Qilin, HUANG Dexing

School of Resources, Environment and Chemistry, Chuxiong Normal University, Chuxiong, Yunnan Province 675000

Received:2023-11-02 Online:2024-05-20 Published:2024-06-05

摘要/Abstract

摘要： 利用失重法、极化曲线和电化学阻抗谱等方法研究2,5-二巯基-1,3,4-噻唑（DMTD）对纯铜在0.5 M的硫酸中的缓蚀作用。通过失重法研究缓蚀效果,并以其实验数据探讨吸附模型;采用极化曲线和电化学阻抗图谱研究缓蚀剂性能及机理。失重结果表明四种实验温度下DMTD均可明显减缓纯铜在硫酸溶液中的腐蚀,DMTD分子吸附满足Langmuir等温线;电化学分析可知DMTD抑制纯铜阴阳极腐蚀反应;随着DMTD浓度的增大,吸附膜层缓蚀性能增强;表面形貌观察分别证实了DMTD的缓蚀作用。2,5-二巯基-1,3,4-噻唑（DMTD）可有效抑制纯铜在0.5 mol·L^-1的硫酸中的腐蚀。

关键词: 纯铜, 硫酸, DMTD, 吸附, 缓蚀

Abstract: The corrosion inhibition behavior of 2, 5-dimerhydryl-1,3, 4-thiazole (DMTD) on pure copper in 0.5 M sulfuric acid was studied by weight loss method, polarization curve and electrochemical impedance spectroscopy. The effect of corrosion inhibition was studied by weight loss method, and the adsorption model was discussed based on the experimental data. The electrochemical method was adopted to study the properties and mechanism of corrosion inhibitor. The weight loss results show that DMTD can significantly slow down the corrosion of pure copper in sulfuric acid solution at all four experimental temperatures, and the organic molecular adsorption meets the Langmuir isotherm. Electrochemical analysis showed that DMTD inhibited anode and cathode corrosion reaction of pure copper. With the increase of DMTD concentration, the corrosion inhibition performance of the adsorption film enhanced. The corrosion inhibition effect of DMTD was confirmed by surface morphology observation. 2, 5-dimercapto-1,3, 4-thiazole (DMTD) can effectively inhibit the corrosion of pure copper in 0.5 M sulfuric acid.

Key words: pure copper, sulfuric acid, DMTD, adsorption, corrosion inhibition

中图分类号:

TG174.42

陈文, 林怡辰, 张旗麟, 黄德兴. 噻唑化合物对铜在硫酸中的缓蚀行为研究[J]. 楚雄师范学院学报, 2024, 39(3): 50-54.

CHEN Wen, LIN Yichen, ZHANG Qilin, HUANG Dexing. Inhibition Behavior of Thiazole Compounds on Copper in Sulfuric Acid[J]. Journal of Chuxiong Normal University, 2024, 39(3): 50-54.

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