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试验研究

葡萄糖与甘氨酸反应产物对碳钢的缓蚀效果

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  • 沈阳建筑大学材料科学与工程学院

收稿日期: 2021-07-27

  修回日期: 2021-09-07

  录用日期: 2021-09-30

  网络出版日期: 2023-12-24

基金资助

辽宁省教育厅科研项目(lnjc202016);辽宁省兴辽英才计划项目(XLYC2002005);辽宁省大学生创新创业计划项目(201910153079)资助

Corrosion Inhibition on Carbon Steel by Reaction Products of Glucose and Glycine

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  • School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received date: 2021-07-27

  Revised date: 2021-09-07

  Accepted date: 2021-09-30

  Online published: 2023-12-24

摘要

为了解葡萄糖与甘氨酸反应产物对碳钢的缓蚀效果,采用失重法、电化学法并结合扫描电镜观察,研究了葡萄糖与甘氨酸反应产物(PGG)对碳钢在1 mol/L HCl溶液中的腐蚀抑制作用。结果发现:PGG对碳钢表现出很好的缓蚀效果,缓蚀效率随添加浓度的增加而增加,在最大浓度250 mg/L 时,表现出最好的缓蚀效果,缓蚀效率为94.7%,且缓蚀效率随温度升高而降低。PGG同时抑制了碳钢腐蚀的阴极还原反应和阳极氧化反应过程,为混合型缓蚀剂,是通过多组分的物理和化学联合吸附,在碳钢表面上形成保护性覆盖层,将碳钢与酸溶液隔离,从而起到缓蚀作用,其吸附行为遵循Langmuir吸附等温模型。葡萄糖与甘氨酸反应产物(PGG)是碳钢在1 mol/L HCl 溶液中的优良缓蚀剂。

本文引用格式

任品桥, 王秀梅, 万晔, 叶天爱, 邓紫嫣, 王泌颖 . 葡萄糖与甘氨酸反应产物对碳钢的缓蚀效果[J]. 材料保护, 2022 , 55(1) : 120 -127 . DOI: 10.16577/j.issn.1001-1560.2022.0015

Abstract

In order to understand the corrosion inhibition effect of the reaction products of glucose and glycine (PGG) on carbon steel, the weight loss measurement, electrochemical techniques, and SEM observation were employed to study the corrosion inhibition of PGG on carbon steel in 1 mol/L HCl solution. Results showed that PGG showed good corrosion inhibition effect on carbon steel, and the corrosion inhibition efficiency enhanced with the increase of PGG concentration. When the highest concentration of PGG was 250 mg/L, it showed the best corrosion inhibition effect, the inhibition efficiency reached the maximum of 94.7%, which had the decreasing tendency with increasing corrosion temperature. Moreover, PGG was a mixed type corrosion inhibitor by retarding both cathodic reduction reaction and anodic oxidation reaction process of carbon steel electrode simultaneously. The good corrosion inhibition was mainly due to combination of physical and chemical adsorption of multi phase to form a protective film covering on the surface of carbon steel that isolated the carbon steel from the acid solution and thereby suppressed carbon steel corrosion. PGG adsorption on the carbon steel surface followed the Langmuir adsorption isotherm model. In general, the product of glucose and glycine (PGG) was an excellent corrosion inhibitor for carbon steel in 1 mol/L HCl solution.
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