Effect of iron ion diffusion on the corrosion behavior of carbon steels in soil environment

被引：22

作者：

Bai, Ziheng ^{[1
,2
]}

Xiao, Kui ^{[1
,2
]}

Dong, Pengfei ^{[1
,2
]}

Dong, Chaofang ^{[1
,2
]}

Wei, Dan ^{[3
]}

Li, Xiaogang ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[3] China Assoc Sci & Technol, Serv Ctr Soc, Beijing 100081, Peoples R China

来源：

RSC ADVANCES | 2018年 / 8卷 / 71期

基金：

中国国家自然科学基金;

关键词：

WEATHERING STEEL; PRODUCTS; SPECTROSCOPY; REDUCTION; MECHANISM; SURFACE; LAYERS;

D O I：

10.1039/c8ra08032a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The corrosion behavior of metal materials in soil environments has been intensively studied recently. Even so, the detailed corrosion mechanisms remain elusive, especially regarding the role of metal ions. In this study, we investigated the effect of ion diffusion on the corrosion processes of carbon steel via scanning electron microscopy (SEM), in situ laser Raman spectroscopy and scanning Kelvin probe (SKP). It was found that the Fe3+ diffusion was a key factor to the corrosion rate, as well as the formation of corrosion products. Typically, the corrosion products suppressed the diffusion of ions to the surface of carbon steels, and thus the cation diffusion coefficient played a significant role in formation processes of corrosion products, which furthermore affected the corrosion processes of the carbon steels.

引用

页码：40544 / 40553

页数：10

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