New approaches to enhancing hydrogen permeation inhibition in pipeline steel through cationic surfactant-assisted adsorption of organic inhibitors and mechanistic understanding

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Zhi Wang , Shuohan Wang , Anthony Somers , Bob Varela , Mike Yongjun Tan
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Abstract

Hydrogen permeation inhibition using organic inhibitors is considered to be a promising approach to protecting pipeline steels from hydrogen embrittlement. However, the effectiveness of existing inhibitors remains insufficient for practical industrial applications. This study investigates the enhancement of hydrogen permeation inhibition in API X65 pipeline steel using new compounds synthesised through the combination of a cationic surfactant with environmentally friendly anionic organic inhibitors, specifically cetyltrimethylammonium (CTA+) with trans-4-hydroxycinnamate (4OHcinn-) and trans-4-ethoxycinnamate (4EtOcinn-). While the individual components, cetyltrimethylammonium bromide (CTAB) and sodium 4-hydroxycinnamate (Na-4OHcinn), exhibited low hydrogen permeation inhibition efficiency with values below 20 %, the synthesised compounds CTA-4OHcinn and CTA-4EtOcinn achieved significantly higher inhibition efficiencies of 65 % and 80 %, respectively. The inhibition efficiency enhancement mechanism was investigated using electrochemical and surface analytical techniques, including the advanced methods of local electrochemical impedance spectroscopy and atom probe tomography for probing inhibitor film coverage characteristics and nanometre scale three-dimensional element distribution. The addition of these inhibitors during hydrogen charging was found to result in the formation of compact surface inhibitor films, with the significantly improved hydrogen permeation inhibition efficiency attributed to micelle-assisted adsorption of anionic organic inhibitors. These results show the prospective of developing high efficiency hydrogen inhibition inhibitors by combining cationic surfactants with environmentally friendly anionic inhibitors to mitigate hydrogen ingress in steels.
通过阳离子表面活性剂辅助吸附有机抑制剂增强管道钢中氢渗透抑制的新方法及其机理的认识
使用有机抑制剂抑制氢渗透被认为是一种很有前途的防止管道钢氢脆的方法。然而,现有抑制剂的有效性仍然不足以实际工业应用。本研究研究了通过阳离子表面活性剂与环保型阴离子有机抑制剂,特别是十六烷基三甲基铵(CTA+)与反式4-羟基肉桂酸(4OHcinn-)和反式4-乙氧基肉桂酸(4EtOcinn-)结合合成的新化合物,增强API X65管道钢中的氢渗透抑制作用。单个组分CTAB和Na-4OHcinn的氢渗透抑制率较低,均低于20 %,而合成的化合物CTA-4OHcinn和CTA-4EtOcinn的氢渗透抑制率分别为65 %和80 %。利用电化学和表面分析技术,包括先进的局部电化学阻抗谱和原子探针层析成像技术来探测缓蚀剂膜覆盖特征和纳米尺度三维元素分布,研究了缓蚀剂效率的增强机理。研究发现,在充氢过程中加入这些抑制剂可形成致密的表面抑制剂膜,阴离子型有机抑制剂的胶束辅助吸附显著提高了氢渗透抑制效率。这些结果表明,通过将阳离子表面活性剂与环境友好型阴离子表面活性剂结合,开发出高效的氢抑制剂来减轻钢中氢的侵入。
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来源期刊
Corrosion Science
Corrosion Science 工程技术-材料科学:综合
CiteScore
13.60
自引率
18.10%
发文量
763
审稿时长
46 days
期刊介绍: Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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