Influence of dislocation on sour corrosion of carbon steel in a low H2S sour environment

被引：9
|
作者：
Samusawa, Itaru [1 ]
Izumi, Daich [1 ]
Shimamura, Junji [1 ]
机构：
[1] JFE Steel Corp, Steel Res Lab, Hiroshima, Japan
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2022年 / 73卷 / 02期
基金：
澳大利亚研究理事会;
关键词：
carbon steel; density functional theory; reference interaction site model; sour corrosion; SULFIDE STRESS CRACKING; HYDROGEN-SULFIDE; PLASTIC-DEFORMATION; PIPELINE STEELS; DISSOLUTION; BEHAVIOR; MICROSTRUCTURE; SUSCEPTIBILITY; CONTACT; IRON;
D O I：
10.1002/maco.202112745
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of dislocation on corrosion of low alloy steel in a low H2S sour corrosion environment was investigated experimentally (immersion corrosion test and polarization measurement) and theoretically (ESM-RISM simulation). The results showed that dislocation increases corrosion weight loss by promoting the anodic dissolution reaction. The Fe atom solubilities of two kinds of Fe slab models simulating conditions with/without lattice defects were evaluated, and the high Fe solubility of the model with lattice defects was clarified. Based on these experimental and theoretical findings, the mechanism by which dislocation influences anodic dissolution was discussed.
引用
收藏
页码：272 / 280
页数：9
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