Studies on the inhibitive effect of ferrozine on the corrosion of mild steel in hydrochloric acid

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-06-06 DOI:10.1016/j.jtice.2025.106221

Anil Kumar , Brohmani Bhattacharya , Chandan Das

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引用次数: 0

Abstract

Background

Corrosion poses a great danger to the safety of multiphase oil and gas facilities, leading to high maintenance costs, loss of life, and property loss. Recently, corrosion inhibitors have been most commonly used for metal protection applications.

Methods

In this work, ferrozine was utilized as a novel inhibitor for mitigating the mild steel (MS) corrosion in 1 M HCl, and its corrosion-inhibiting effect was investigated using electrochemical (potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)) and mass loss methods.

Significant Findings

Tafel polarization results revealed that the corrosion current density (i_corr) significantly decreased and the polarization resistance increased in the presence of the inhibitor, indicating enhanced corrosion inhibition by ferrozine. The maximum inhibition efficiency of 88.85 % was achieved at a concentration of 1 × 10⁻³ M. The adsorption of ferrozine on the MS surface followed the Langmuir adsorption isotherm. The obtained value of ΔG°_ads (−9.83 kJ mol⁻¹) confirms the physical and self-adsorption of ferrozine molecules on the MS surface. Moreover, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM) analysis, and X-ray diffraction (XRD) analyses indicated that ferrozine molecules form a protective layer on the surface of MS, which significantly reduces the MS degradation in acid medium.

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亚铁锌对低碳钢在盐酸中的缓蚀作用的研究

腐蚀对多相油气设施的安全构成了极大的威胁，造成了高昂的维护成本、人员伤亡和财产损失。最近，缓蚀剂最常用于金属保护应用。方法以亚铁锌为缓蚀剂，采用电化学动电位极化（PDP）、电化学阻抗谱（EIS）和质量损失法研究其缓蚀剂对1 M HCl中低碳钢（MS）的缓蚀效果。stafel极化结果显示，在缓蚀剂的存在下，腐蚀电流密度（icorr）显著降低，极化电阻增加，表明铁锌的缓蚀作用增强。在浓度为1 × 10−3 m时，铁锌在质谱表面的吸附符合Langmuir吸附等温线，抑制率为88.85%。所得值ΔG°ads （- 9.83 kJ mol - 1）证实了亚铁锌分子在质谱表面的物理吸附和自吸附。此外，场发射扫描电镜（FESEM）、能量色散x射线能谱（EDX）、原子力显微镜（AFM）和x射线衍射（XRD）分析表明，铁锌分子在质谱表面形成保护层，显著降低了质谱在酸性介质中的降解。

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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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.