In situ observation and SKPFM analysis to study the adsorption behavior and corrosion inhibition mechanism of 2-aminobenzimidazole inhibitor on Cu-5 wt% Fe alloys

被引：1

作者：

Liao, Chenfang ^{[1
]}

Chen, Yang ^{[1
]}

Luo, Chao ^{[1
]}

Guan, Bo ^{[2
]}

Hu, Qiang ^{[2
]}

Guan, Hongyu ^{[3
]}

Luc, Chassagne ^{[3
]}

Hu, Zhi ^{[1
,4
]}

机构：

[1] Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Peoples R China

[2] Jiangxi Acad Sci, Inst Appl Phys, Nanchang 330029, Peoples R China

[3] Univ Paris Saclay, Univ Versailles St Quentin, Lab Ingenierie Syst Versailles, F-78140 Versailles, France

[4] Nanchang Univ, Jiangxi Prov Key Lab Light Alloy, Nanchang 330029, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2025年 / 687卷

关键词：

In situ observation; Inhibitor; Cu-Fe alloy; Corrosion mechanism; MILD-STEEL; FORCE MICROSCOPY; CARBON-STEEL; CHLORIDE; BENZIMIDAZOLE; DERIVATIVES; NANOPARTICLES; PERFORMANCE; NACL; AFM;

D O I：

10.1016/j.apsusc.2024.162232

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption behaviour and corrosion inhibition mechanism of 2-aminobenz- imidazole (2-ABI) on Cu - 5 wt % Fe (Cu-5Fe) alloys was investigated by in-situ observation and scanning kelvin probe force microscopy (SKPFM). The 2-ABI molecules adsorb only on the cathode Cu phase and forms a protective film, while the anode Fe phase is barely dissolved after long-term immersion, corresponding to the inhibition efficiency reaching 92.7 % after 72 h immersion. The Volta potential difference between the Cu matrix and Fe phases increased from 41 to 145.4 mV due to the lack of electrical conductivity in the 2-ABI adsorption film on the Cu matrix. Hence, the 2ABI adsorption film prevents the formation of micro-galvanic couples and eventually alters the corrosion mechanism of the Cu-5Fe alloy.

引用

页数：13