Influence of Sn and Mo on corrosion behavior of ferrite-pearlite steel in the simulated bottom plate environment of cargo oil tank

被引：29

作者：

Hao, Xuehui ^{[1
,2
]}

Dong, Junhua ^{[1
]}

Mu, Xin ^{[1
]}

Wei, Jie ^{[1
]}

Wang, Changgang ^{[1
]}

Ke, Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Shenyang 110016, Liaoning, Peoples R China

[2] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2019年 / 35卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Sn; Mo; SEM; EPMA; EIS; AUSTENITIC STAINLESS-STEELS; POTENTIAL-PH DIAGRAMS; MOLYBDENUM; FILMS; XPS; CU; EVOLUTION; ADDITIONS; AISI-304;

D O I：

10.1016/j.jmst.2018.11.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigated the influence of Sn and Mo on corrosion behavior of ferrite-pearlite steel in the simulated bottom plate environment of cargo oil tank. The results indicate that the corrosion rate of three ferrite-pearlite steels increased with extending the immersion time due to the continuous accumulation of the residual Fe3C. However, the addition of Sn or the combined addition of Sn and Mo could reduce the corrosion rate of Sn containing steel and Sn-Mo containing steel to 37.5% and 20% of that of carbon steel, respectively. Moreover, the cathodic reaction of Sn containing steel and Sn-Mo containing steel was always controlled by the charge transfer step during the whole immersion test, while that of carbon steel was gradually transformed into the diffusion-controlled process. These results were mainly related with the deposition of metallic Sn and Mo on the steel surface. The metallic Sn and Mo with uniform distribution restrained the galvanic effect through suppressing both the anodic dissolution of ferrite and cathodic hydrogen evolution reaction on the residual Fe3C. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：799 / 811

页数：13