吗啉盐挥发性缓蚀剂在碳钢上的性能和机理研究

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-08-07 DOI:10.3390/coatings14080997
Xiong Zhao, Junying Zhang, Lu Ma, Wubin Wang, Mingxing Zhang
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引用次数: 0

摘要

通过固相化学反应合成了一系列吗啉盐挥发性缓蚀剂(VCIs)。采用蒸发失重、VCI 能力和腐蚀失重测试评估了其缓蚀性能。通过薄膜电解质下的电化学测试、X 射线光电子能谱(XPS)和计算模拟,探索了吗啉盐 VCIs 在大气条件下对碳钢的缓蚀机理。碳酸吗啉表现出较高的挥发性。腐蚀失重测试表明,使用苯甲酸吗啉或碳酸吗啉处理的钢材的腐蚀失重降低了 85%以上。通过 X 射线光电子能谱(XPS)和计算模拟阐明的抑制剂抑制机理表明,碳酸吗啉和苯甲酸吗啉通过物理和化学吸附作用在钢表面形成保护层,并通过氮原子和氧原子与铁原子配位。量子化学计算表明,碳酸吗啉具有更强的吸附能和电子转移能力,表明其缓蚀性能优于苯甲酸吗啉。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on the Performance and Mechanism of Morpholine Salt Volatile Corrosion Inhibitors on Carbon Steel
A series of morpholine salt volatile corrosion inhibitors (VCIs) were synthesized via solid-phase chemical reactions. The corrosion inhibition performance was assessed using evaporation weight loss, VCI capability, and corrosion weight loss tests. The corrosion inhibition mechanisms of the morpholine salt VCIs for carbon steel in atmospheric conditions were explored through electrochemical testing under thin film electrolytes, X-ray photoelectron spectroscopy (XPS), and computational simulations. Morpholine carbonate exhibited higher volatility. Corrosion weight loss tests showed an >85% reduction for steel treated with morpholine benzoate or morpholine carbonate. The inhibitors’ inhibition mechanism, elucidated through X-ray photoelectron spectroscopy (XPS) and computational simulations, revealed that morpholine carbonate and benzoate form protective layers via physical and chemical adsorption on the steel surface, coordinating with iron atoms through nitrogen and oxygen atoms. Quantum chemical calculations demonstrated that morpholine carbonate had stronger adsorption energy and electron transfer capabilities, indicating superior corrosion inhibition performance over morpholine benzoate.
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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