摘要
通过模拟压水堆一回路高温高压水化学环境,对316L奥氏体不锈钢进行了10、60和120μg/L锌浓度下的动水加锌实验,用X射线光电子能谱(XPS)对其表面氧化膜结构进行分析.结果表明,加锌能有效降低材料的腐蚀速率,在一定范围内加锌浓度(10~60μg/L)越高,腐蚀增重越小;锌对铁镍尖晶石结构中的Fe^2+和Ni^2+有替换作用,形成稳定的ZnCr2O4.
In this paper, the Zn-addition experiments with concentrations of 10μg/L, 60μg/L and 120 μg/L respectively were reported on 316 L stainless steels (SSs) in flowing simulated PWR water. The structures of surface oxide films were analyzed by X-ray photoelectron spectroscopy (XPS). The results show that the corrosion rate of 316 L SSs could be significantly reduced by adding Zn^2+ , and in the concentration range of 10 μg/L to 60 μg/L, the corrosion weight gain decreases as Zn concentration increases; it is also indicated that Zn^2+ is likely to replace Fe^2+ and Ni^2+ in Fe-Ni spinel, thus forming a stable ZnCr2O4.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2014年第3期417-421,共5页
Journal of Shanghai Jiaotong University
基金
大型先进压水堆核电站重大专项(2011ZX06004010)
关键词
316
L奥氏体不锈钢
加锌
氧化膜
X射线光电子能谱
316 L stainless steels
Zn-addition
oxide films
X-ray photoelectron spectroscopy (XPS)