Atmospheric Corrosion Behavior of Ni-Advanced Weathering Steels in High-Chloride Environment: Effect of Ni on Corrosion Morphology

IF 1.6 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Yu Sugawara, Masataka Omoda, Shinji Ootsuka
{"title":"Atmospheric Corrosion Behavior of Ni-Advanced Weathering Steels in High-Chloride Environment: Effect of Ni on Corrosion Morphology","authors":"Yu Sugawara, Masataka Omoda, Shinji Ootsuka","doi":"10.2355/isijinternational.isijint-2024-101","DOIUrl":null,"url":null,"abstract":"</p><p>It is well known that Ni-advanced weathering steels considerably improve the protectiveness of rust layers and drastically reduce corrosion rate compared with the conventional weathering steels. However, unpainted Ni-advanced weathering steels are not suitable for use in high-chloride environments because of no formation of protective rust layers. To expand the application of Ni-advanced weathering steels, it is imperative to understand in detail their corrosion behavior in high-chloride environments. In this study, the effect of Ni addition on the atmospheric corrosion behavior of carbon steels was explored through a wet-dry cyclic corrosion test and potentiodynamic polarization measurements in a simulated high-chloride environment. In particular, the study focused on corrosion morphology and analyzed the distribution of corrosion depth after the corrosion test. During the corrosion test, the protective rust layers did not seem to form on all the specimens due to the high-chloride condition. Nevertheless, the corrosion rates decreased with increasing Ni addition to steels. Corrosion morphology analysis revealed that the Ni addition suppressed relatively uniform corrosions on the entire surface and the growth of deep hole-like corrosions. Anodic polarization curves showed that the Ni addition suppressed the dissolution of the steel matrix, which led to the atmospheric corrosion properties of 2.5Ni-WS and 5Ni-WS in inhibiting relatively uniform corrosion and the growth of deep hole-like corrosions. The change in the electrochemical properties of the steel matrix due to the Ni addition significantly affects the atmospheric corrosion behavior of carbon steels in high-chloride environments.</p>\n<p></p>","PeriodicalId":14619,"journal":{"name":"Isij International","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Isij International","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.2355/isijinternational.isijint-2024-101","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0

Abstract

It is well known that Ni-advanced weathering steels considerably improve the protectiveness of rust layers and drastically reduce corrosion rate compared with the conventional weathering steels. However, unpainted Ni-advanced weathering steels are not suitable for use in high-chloride environments because of no formation of protective rust layers. To expand the application of Ni-advanced weathering steels, it is imperative to understand in detail their corrosion behavior in high-chloride environments. In this study, the effect of Ni addition on the atmospheric corrosion behavior of carbon steels was explored through a wet-dry cyclic corrosion test and potentiodynamic polarization measurements in a simulated high-chloride environment. In particular, the study focused on corrosion morphology and analyzed the distribution of corrosion depth after the corrosion test. During the corrosion test, the protective rust layers did not seem to form on all the specimens due to the high-chloride condition. Nevertheless, the corrosion rates decreased with increasing Ni addition to steels. Corrosion morphology analysis revealed that the Ni addition suppressed relatively uniform corrosions on the entire surface and the growth of deep hole-like corrosions. Anodic polarization curves showed that the Ni addition suppressed the dissolution of the steel matrix, which led to the atmospheric corrosion properties of 2.5Ni-WS and 5Ni-WS in inhibiting relatively uniform corrosion and the growth of deep hole-like corrosions. The change in the electrochemical properties of the steel matrix due to the Ni addition significantly affects the atmospheric corrosion behavior of carbon steels in high-chloride environments.

高氯化物环境中镍高级耐候钢的大气腐蚀性能:镍对腐蚀形态的影响
众所周知,与传统的耐候钢相比,镍高级耐候钢大大提高了锈层的保护能力,并显著降低了腐蚀率。然而,未涂漆的镍强化耐候钢由于不会形成保护性锈层,因此不适合在高盐度环境中使用。为了扩大镍高级耐候钢的应用范围,必须详细了解其在高盐酸盐环境中的腐蚀行为。本研究通过干湿循环腐蚀试验和模拟高盐度环境下的电位极化测量,探讨了添加镍对碳钢大气腐蚀行为的影响。研究尤其关注腐蚀形态,并分析了腐蚀试验后的腐蚀深度分布。在腐蚀试验过程中,由于高盐度条件的影响,所有试样上似乎都没有形成保护锈层。尽管如此,随着钢中镍添加量的增加,腐蚀速率有所下降。腐蚀形态分析表明,镍的添加抑制了整个表面相对均匀的腐蚀和深孔腐蚀的生长。阳极极化曲线显示,镍的添加抑制了钢基体的溶解,这使得 2.5Ni-WS 和 5Ni-WS 在抑制相对均匀腐蚀和深孔状腐蚀生长方面具有大气腐蚀特性。添加镍导致的钢基体电化学性质的变化极大地影响了碳钢在高盐酸盐环境中的大气腐蚀行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Isij International
Isij International 工程技术-冶金工程
CiteScore
3.40
自引率
16.70%
发文量
268
审稿时长
2.6 months
期刊介绍: The journal provides an international medium for the publication of fundamental and technological aspects of the properties, structure, characterization and modeling, processing, fabrication, and environmental issues of iron and steel, along with related engineering materials.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信