Electrochemical Corrosion Behaviour of X80 Steel in Sandy Soil under a Natural Air-drying State

被引：2

作者：

Xie, Ruizhen ^{[1
,4
]}

Zhang, Shuke ^{[1
]}

Zhang, Xu ^{[1
]}

Geng, Ruicheng ^{[1
]}

Xie, Yating ^{[1
]}

Li, Boqiong ^{[1
,4
]}

Han, Pengju ^{[2
]}

Dou, Baojie ^{[3
]}

Wang, Zhenxia ^{[5
]}

机构：

[1] Jinzhong Univ, Dept Mat Sci & Engn, Jinzhong 030600, Peoples R China

[2] Taiyuan Univ Technol, Dept Civil Engn, Taiyuan 030024, Peoples R China

[3] Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643002, Peoples R China

[4] Shanxi Prov Collaborat Innovat Ctr Light Mat Modif, Jinzhong 030600, Peoples R China

[5] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2022年 / 17卷 / 11期

基金：

中国国家自然科学基金;

关键词：

sandy soil; X80; steel; air; -drying; corrosion; PIPELINE STEEL;

D O I：

10.20964/2022.11.88

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Based on the relationships among electrochemical theory, corrosion of sandy soil and corrosion principle of X80 steel, the corrosion mechanism of X80 steel in sandy soil under a natural air-drying state was comprehensively studied in this paper. The results show that with increasing age, as the water content in sandy soil decreased, the polarization curve of X80 steel shifted to the upper left, and its corrosion rate gradually weakened. The X80 steel exhibited slight corrosion, and the average corrosion rate was 1.65E-2 mm/a. Near the limit volume content of the liquid bridge, the radius of the capacitive arc was the smallest, and sandy soil had the strongest corrosion effect on X80 steel. Brown-yellow corrosion products (iron oxides, Fe2O3) with uneven thickness were deposited on the surface of the X80 steel. The localized corrosion products appeared as leopard pattern, flocculent clusters, rice grains.

引用

页数：14

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