Investigation of structural properties and corrosion inhibition mechanism of green corrosion inhibitors for mild steel in acidic media

S. Khan, Muhammad Hussain, M. Quraishi
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Abstract

: Mild steel is often used in the construction of reaction vessels, storage tanks, and petroleum refineries, but it is heavily damaged by acid solutions. Despite ongoing developments in the production of corrosion-resistant materials, chemical inhibitors are also the most realistic and cost-effective method of corrosion prevention. Mild steel corrosion has been shown to be inhibited by organic compounds containing nitrogen, sulphur, oxygen, and heterocyclic compounds with a polar functional group and a conjugated double bond. Organic inhibitors come in a variety of forms, but the majority of them are both costly and harmful. As a result, finding low-cost and environmentally sustainable inhibitors remains a priority. A small number of non-toxic compounds from the pharmaceutically active compounds have been studied for their mild steel corrosion inhibition properties in acid media. Plant extracts are abundant in corrosion inhibitors that are safe for the environment. The extracts from the plant are non-toxic and easy to obtain. Many organic compounds with polar atoms like O, N, P, and S can be found in these extracts. Protective films are created as they are adsorbed onto the metal surface by these polar atoms. These ingredients adsorb according to a number of isotherms. By analysing data from weight loss measurements, tafel polarisation, and EIS investigations, we have studied structural features of a few green corrosion inhibitors and their mechanism of corrosion inhibition.
绿色缓蚀剂对低碳钢在酸性介质中的结构性能及缓蚀机理的研究
低碳钢常用于建造反应容器、储罐和石油精炼厂,但它易受酸性溶液的严重损坏。尽管耐腐蚀材料的生产在不断发展,但化学抑制剂也是最现实、最具成本效益的防腐方法。含有氮、硫、氧的有机化合物和具有极性官能团和共轭双键的杂环化合物抑制了低碳钢的腐蚀。有机抑制剂有多种形式,但大多数既昂贵又有害。因此,寻找低成本和环境可持续的抑制剂仍然是当务之急。从药物活性化合物中提取的少量无毒化合物在酸性介质中对低碳钢的缓蚀性能进行了研究。植物提取物富含对环境安全的缓蚀剂。该植物的提取物无毒,易于获得。在这些提取物中可以找到许多具有极性原子的有机化合物,如O、N、P和S。当它们被这些极性原子吸附到金属表面时,就形成了保护膜。这些成分根据若干等温线吸附。通过分析失重测量、tafel极化和EIS调查的数据,我们研究了几种绿色缓蚀剂的结构特征及其缓蚀机理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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