腐植酸作为 EH40 船板钢的环保型缓蚀剂

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-25 DOI:10.1002/sia.7335

Sizhu Wang, Zhipeng Liang, Yiyong Wang, Hui Jin, Shengli Li, Rui Guan

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引用次数: 0

摘要

本研究采用溶解-中和的方法，从天然腐殖质植物--腐殖土中提取了一种新型绿色缓蚀剂--腐殖酸钠（SH），并将其用于海水中低碳钢的缓蚀。采用失重法和电化学技术测试了 SH 对海水中低碳钢 EH40 的缓蚀性能。通过扫描电子显微镜（SEM）、原子力显微镜（AFM）、接触角和 X 射线光电子能谱（XPS）对低碳钢的表面和腐蚀产物进行了观察和分析。结果表明，SH 是一种混合缓蚀剂，最佳浓度为 2 g L-1。在此浓度下，抑制率可达 93.6%。它主要影响阴极腐蚀的半反应。通过在 EH40 钢表面形成均匀吸附的腐蚀保护层，提高了 EH40 钢的耐海水腐蚀能力。

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Humic acid as eco‐friendly corrosion inhibitor for EH40 ship plate steel

In this study, a new type of green corrosion inhibitor, namely, sodium humate (SH), was extracted from humus soil, which is a natural humus plant, by dissolution‐neutralization, and then used for corrosion inhibition of low carbon steel in seawater. The corrosion inhibition performance of SH on low carbon steel EH40 in seawater was tested by weight loss method and electrochemical technology. The surface and corrosion products of low carbon steel were observed and analyzed by scanning electron microscope (SEM), atomic force microscope (AFM), contact angle and X‐ray photoelectron spectroscopy (XPS). The results show that SH is a mixed corrosion inhibitor, and the optimum concentration is 2 g L−1. At this concentration, the inhibition rate can reach 93.6%. It mainly affects the semi‐reaction of cathodic corrosion. By forming a corrosion protection layer with uniform adsorption on the surface of EH40 steel, EH40 steel becomes more resistant to seawater corrosion.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.