Electrochemical investigation of corrosion behavior of 304 and 316L stainless steels in high-temperature water

被引：0

作者：

Duan Z. ^{[1
]}

Du D. ^{[1
]}

Zhang L. ^{[1
]}

Meng F. ^{[2
]}

Shi X. ^{[2
]}

机构：

[1] School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai

[2] Shanghai Nuclear Engineering Research and Design Institute, Shanghai

来源：

Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University | 2016年 / 50卷 / 02期

关键词：

Corrosion behavior; Electrochemistry behavior; High-temperature; Pressured water reactor (PWR); Stainless steel;

D O I：

10.16183/j.cnki.jsjtu.2016.02.010

中图分类号：

学科分类号：

摘要：

The effects of temperature and dissolved oxygen (DO) on electrochemical behaviors and the oxide films formed on type 304 and 316L stainless steels in primary water in simulated pressured water reactor (PWR) were investigated by means of potentiodynamic polarization measurements, scanning electron microscope (SEM) observation and energy dispersive X-ray spectrum (EDS). The results revealled that the passivity of the oxide films degraded with increasing solution temperature. The corrosion potential (Ecorr) shifted to positive direction while corrosion current density (Jcorr) decreased significantly with the increase of DO. The oxide films formed on 304 and 316L stainless steels showed a double-layer characteristic, and the size of oxide particles and the space between oxide particles on outer layer increased with increasing temperature but decreased with increasing DO. The type 316L stainless steels exhibited superior corrosion resistant characteristics than 304 SS in all investigated conditions. © 2016, Editorial Board of Journal of Shanghai Jiao Tong University. All right reserved.

引用

页码：215 / 221

页数：6

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