Influence of available chlorine on corrosion behaviour of low alloy marine steel in natural seawater

被引：6

作者：

Liu, Xuehui ^{[1
,2
]}

Sui, Yongqiang ^{[1
]}

Zhou, Jianyuan ^{[1
]}

Liu, Yapeng ^{[1
]}

Li, Xiangbo ^{[1
]}

Hou, Jian ^{[1
]}

机构：

[1] Luoyang Ship Mat Inst, State Key Lab Marine Corros & Protect, Qingdao, Peoples R China

[2] Luoyang Ship Mat Inst, State Key Lab Marine Corros & Protect, 37 Wenhai Middle Rd, Qingdao 266237, Shandong, Peoples R China

来源：

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2023年 / 58卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Low alloy marine steel; available chlorine; corrosion behaviour; electrochemistry; SODIUM-HYPOCHLORITE; CARBON-STEEL; PITTING CORROSION; Q235B STEEL; WATER; MITIGATION; EVOLUTION;

D O I：

10.1080/1478422X.2023.2209961

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Available chlorine is known to play a significant role in metal corrosion due to its oxidising properties. In this paper, the effect of available chlorine concentration on corrosion behaviour of the low alloy marine steel was investigated by electrochemical and immersion tests. Experimental results show that the corrosion rate of low alloy marine steel is accelerated with the increase of available chlorine concentration in seawater. The localised electrochemical dissolution of the steel is more active with the concentration of available chlorine increasing. Energy dispersive spectroscopy (EDS) was performed to understand the composition of the corrosion products that the large enrichment of Cl element occurred for the high available chlorine concentration (100 ppm) after 720 h exposure to seawater. The influence of available chlorine concentration on mechanical property of low alloy marine steel indicatesthe less impact on the tensile and yield strength of the low alloy marine steel.

引用

页码：475 / 481

页数：7

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