Corrosion behavior of 907 steel under thin electrolyte layers of artificial seawater

被引：0

作者：

王慧萍 ^{[1
]}

丁少春 ^{[2
]}

朱娟 ^{[1
]}

张昭 ^{[1
]}

张鉴清 ^{[1
,3
]}

曹楚南 ^{[1
]}

机构：

[1] Department of Chemistry, Zhejiang University

[2] Scientific Research Office, Naval University of Engineering

[3] State Key Laboratory for Corrosion and Protection of Metals

来源：

JournalofCentralSouthUniversity | 2015年 / 22卷 / 03期

关键词：

907; steel; atmospheric corrosion; electrochemical impedance spectroscopy; polarization;

D O I：

暂无

中图分类号：

TG172 [各种类型的金属腐蚀]; TG142.1 [钢的组织与性能];

学科分类号：

080503 ; 080502 ;

摘要：

The corrosion behavior of 907 steel under thin electrolyte layer(TEL) has been investigated by means of cathodic polarization curve measurement, electrochemical impedance spectroscopy(EIS) and scanning electron microscopy(SEM). The results show that the cathodic diffusion current density presents the variation trend of initial increase and subsequent decrease with the decrease of TEL thickness, and the maximum deposits at 58 μm. The cotangent-hyperbolic impedance(O) is rationally first introduced to study the diffusion process of the reactants through the corrosion products layer with many permeable holes. The initial corrosion rate of 907 steel under different TEL thickness increases with the decrease of TEL thickness except that of 104 μm,whereas the corrosion rate after long time corrosion can be ranked as 104 μm﹥402 μm﹥198 μm﹥301 μm﹥bulk solution.

引用

页码：806 / 814

页数：9

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