Short-Term Corrosion Characteristic of Q235 Steel under Different Atmospheric Environments of Hunan

被引：5

作者：

Wang, Xuankai ^{[1
]}

Wang, Jun ^{[2
]}

Zhou, Xiaobao ^{[1
]}

Xie, Yi ^{[2
]}

Chen, Junjun ^{[2
]}

Ding, Zhimin ^{[3
]}

Wu, Tangqing ^{[1
]}

Luo, Jun ^{[1
]}

Yin, Fucheng ^{[1
]}

机构：

[1] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China

[2] State Grid Hunan Elect Power Co Ltd, Res Inst, Changsha 410007, Peoples R China

[3] Finework Hunan New Energy Technol Ltd, Changde 415701, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2022年 / 31卷 / 10期

基金：

中国国家自然科学基金;

关键词：

atmospheric corrosion; pollutants; Q235; steel; relative humidity; SEM; EDS; CARBON-STEEL; FIELD EXPOSURE; PIPELINE STEEL; BEHAVIOR; MECHANISM; SO2; NO2;

D O I：

10.1007/s11665-022-06839-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, atmospheric corrosion behavior of Q235 steel in Hunan was studied using SEM/EDS, XRD and electrochemical measurement. The results showed that the corrosion products of the steel after one-year exposure in Hunan were mainly composed of alpha-FeOOH, gamma-FeOOH, Fe3O4 and Fe2O3. At the five selective sites, the minimum and maximum corrosion rates of the steel exhibited in the Gaoyun (rural) and Mengdu (mining area) sites, respectively. The increasing order of the pit depth of the steel was as this sequence: Gaoyun, Jiuhua (urban), Shanjuan (urban industry), Mingshan (fresh water lake area) and Mengdu. The pit depth of the skyward surface was generally 10-20 mu m deeper than that of the earthward surface in the same sites. The pollutants and relative humidity were the important factors affecting the atmospheric corrosion behavior of the steel.

引用

页码：7892 / 7905

页数：14

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