Inhibition of the initial stages of corrosion by 2-mercaptobenzothiazole adsorption and the effects of interfacial oxides on copper in neutral chloride conditions

被引：6
|
作者：
Garg, Vishant [1 ]
Zanna, Sandrine [1 ]
Seyeux, Antoine [1 ]
Wiame, Frederic [1 ]
Maurice, Vincent [1 ]
Marcus, Philippe [1 ]
机构：
[1] PSL Univ, Inst Rech Chim Paris, CNRS, Chim ParisTech,Phys Chem Surfaces Res Grp, 11 Rue Pierre & Marie Curie, F-75005 Paris, France
来源：
CORROSION SCIENCE | 2023年 / 225卷
基金：
欧洲研究理事会;
关键词：
A; -; Copper; A - Organic Inhibitor; A-2-mercaptobenzothiazole; B - Cyclic Voltammetry; B; XPS; ToF-SIMS; C - Corrosion Inhibition; PITTING CORROSION; LOCALIZED CORROSION; FILMS; LAYER; PROTECTION; SURFACE; XPS; SPECTROSCOPY; BREAKDOWN; SPECTRA;
D O I：
10.1016/j.corsci.2023.111596
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Advanced surface analytical techniques were used to study 2-mercaptobenzothiazole (2-MBT) adsorption and interfacial oxide effects on copper, and cyclic voltammetry was used to characterize corrosion inhibition in NaCl solution. 2-MBT adsorbs on metallic copper by its sulphur atoms along with a small fraction of nitrogen atoms. The 2-MBT film formed is thicker when the interfacial oxide is less. Upon anodic polarisation, a direct correlation between the thickness of 2-MBT layer and protection against corrosion initiation is observed. The metal-organic complexes, formed by an interaction between 2-MBT and Cu(I) ions, do not offer additional protection to the substrate.
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页数：13
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