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Updated: Jan 9, 2026

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低碳钢的DIMC酸相保护:通过WL/PDP/EIS和密度功能建模证明了这一点

Sherin A M Ali¹, Mostafa E Salem², Mostafa A A Mahmoud^3,4

¹Department of Mechanics, Faculty of Engineering, Suez Canal University Ismailia 41522 Egypt.

|December 8, 2025

概括

一种新型化合物,2,2'-(2,3-二基甲) bis(N-propylhydrazine-1-carbothioamide) (DIMC),有效地抑制了HCl中低碳钢的腐蚀. 它形成了一层保护层,即使在高温下也能提供显著的保护.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
腐蚀科学腐蚀科学

背景情况:

低碳钢 (LCS) 在酸性环境中容易发生严重的腐蚀.
有效的腐蚀抑制剂对于保护钢铁基础设施至关重要.

研究的目的:

为了合成和评估2.2'-(2,3-dihydroxyterephthaloyl) bis(N-propylhydrazine-1-carbothioamide) (DIMC) 作为0.5M HCl中的LCS的腐蚀抑制剂.
用计算和实验技术阐明抑制机制.

主要方法:

体重减轻 (WL) 的测量.
潜在动力学极化 (PDP) 和电化学阻抗光谱学 (EIS).
表面分析 (SEM/AFM) 和计算建模 (DFT,蒙特卡洛模拟).

主要成果:

DIMC证明了度依赖的腐蚀抑制,在300ppm和298K时达到91.41%的效率.
高抑制效率 (80.24%) 在328K时得到维持.
EIS分析表明强大的电荷转移抑制和薄膜形成,得到了DFT和蒙特卡洛模拟的支持,预测了混合的物理吸收-化学吸收.

结论:

DIMC有效地减轻了LCS在攻击性HCl中的阳极和阴极反应.
通过DIMC形成稳定的吸附层,使其成为一个有希望的绿色腐蚀抑制剂,用于酸性介质中的钢.

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