An empirical model for the corrosion of stainless steel in BWR primary coolant

被引：4

作者：

Uchida, Shunsuke ^{[1
]}

Hanawa, Satoshi ^{[2
]}

Naitoh, Masanori ^{[1
]}

Okada, Hidetoshi ^{[1
]}

Lister, Derek H. ^{[3
]}

机构：

[1] Inst Appl Energy, Tokyo, Japan

[2] Japan Atom Energy Agcy, Tokai, Ibaraki, Japan

[3] Univ New Brunswick, Fredericton, NB, Canada

来源：

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2017年 / 52卷 / 08期

关键词：

Electrochemistry; oxide layer; electrochemical corrosion potential; anodic current; radiation effects; HYDROGEN WATER CHEMISTRY; TEMPERATURE WATER; GENERAL CORROSION; OXIDE-FILMS; PEROXIDE; LOOP; SEGREGATION; VALIDATION; RESISTANCE; SURFACES;

D O I：

10.1080/1478422X.2017.1357960

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model to evaluate the electrochemical corrosion potential (ECP) and corrosion rate of stainless steel in neutral water was developed by coupling a static electrochemical analysis and a dynamic oxide layer growth analysis. ECP is much affected not only by water chemistry conditions but also by the oxide layers that develop on the metal surface. As an example application of the model, the effects of oxide layers on ECPs were calculated and a good agreement with the measured results was shown. Major conclusions obtained using the coupled model were as follows: (1) The effects of H2O2 and O-2 concentrations on ECP were successfully explained as the effects of oxide layer growth. (2) Decreases in ECP due to neutron exposure were explained well by radiation-induced diffusion in the oxide layers. (3) Hysteresis of ECP was well explained by the coupled model.

引用

页码：587 / 595

页数：9

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