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Updated: Jun 26, 2025

Metal Corrosion and the Efficiency of Corrosion Inhibitors in Less Conductive Media

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Published on: November 3, 2018

探索米灰作为绿色腐蚀抑制剂,浸泡在NH₄_Cl 7.5%溶液中

Agus Paul Setiawan Kaban¹, Johny Wahyuadi Soedarsono¹, Mochammad Syaiful Anwar²

¹Prof Johny Wahyuadi Laboratory, Department of Metallurgical and Materials Engineering, Universitas Indonesia, Depok, 16424, Indonesia.

|May 17, 2024

概括

米灰 (RHA) 液体烟雾有效地抑制了炼油厂环境中的腐蚀. 这种绿色抑制剂显著降低了腐蚀率,在化溶液中提供超过96%的保护.

科学领域:

材料科学材料科学材料科学
腐蚀工程腐蚀工程
绿色化学绿色化学

背景情况:

炼油设施面临着严重的腐蚀挑战,需要有效和环保的保护方法.
米灰 (RHA) 是开发绿色腐蚀抑制剂的潜在来源.
现有的方法通常依赖于可能构成环境风险的化学物质.

研究的目的:

开发和评估由RHA衍生的液体烟雾溶液作为绿色腐蚀抑制剂.
评估RHA在缓解NH4Cl溶液中C1018钢的腐蚀中的有效性.
为了阐明RHA抑制腐蚀的机制.

主要方法:

通过蒸汽凝结制备RHA液体烟雾溶液.
电动力学和电化学腐蚀试验.
紫外可见光 (UV-Vis) 和富里埃变换红外光谱 (FTIR) 分析.
扫描电子显微镜 (SEM) 和原子力显微镜 (AFM) 用于表面评估.

主要成果:

RHA抑制剂将腐蚀率降低到0.120 mmpy,在7.5 ppm时效率>96%.
尼奎斯特半圆径的增加表明,在较高度下,在C1018钢上增强了RHA吸附.
紫外线和FTIR证实了功能组 (C=C,C=O,-OH) 通过电子转换 (n-π*, π-π*) 进行抑制的作用.
在 SEM/AFM 检测中,发现了一种保护性Fe- ((NH4Cl-RHA) n 复合膜的形成.

结论:

在NH4Cl环境中,RHA液体烟雾是C1018钢的高效绿色腐蚀抑制剂.
抑制机制涉及吸附和保护复合层的形成.
在炼油厂设施等工业应用中,RHA为防腐蚀提供了一个可持续的替代方案.

关键词:

大气腐蚀是由于大气中的腐蚀.绿色腐蚀抑制剂绿色腐蚀抑制剂液体烟雾抑制剂液体烟雾抑制剂在NH4Cl的防腐蚀保护中.大米皮灰的灰

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