Electrochemical and XPS investigation of the corrosion behavior of Alloy 690 at high-temperature water

被引：23

作者：

Duan, Zhengang ^{[1
]}

Arjmand, Farzin ^{[1
]}

Zhang, Lefu ^{[1
]}

Meng, Fanjiang ^{[2
]}

Abe, Hiroaki ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China

[2] Shanghai Nucl Engn Res & Design Inst, Shanghai 200233, Peoples R China

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2015年 / 19卷 / 08期

关键词：

Alloy; 690; Potentiodynamic polarization; XPS; Passive film; High-temperature corrosion; SIMULATED PRIMARY WATER; SURFACE OXIDE-FILMS; PWR PRIMARY WATER; DISSOLVED-OXYGEN; STAINLESS-STEEL; PH; MECHANISM; HYDROGEN; NICKEL; ZN;

D O I：

10.1007/s10008-015-2856-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effects of solution temperature, pH, and dissolved oxygen concentration on the electrochemical behavior of Alloy 690 in high-temperature water were investigated by electrochemical potentiodynamic polarization, and the oxide films developed on the specimens were characterized by X-ray photoelectron spectroscopy (XPS). The results revealed that in deaerated water + ETA solution decreasing the temperature and the pH of the environment improves the passivity of the oxide film on Alloy 690. The XPS analysis of the oxide film formed on Alloy 690 specimens after exposing to high-temperature water showed that the outer layer of the film consists of Ni hydroxides, Cr hydroxides, and NiFe2O4, while Cr2O3 and (Ni (x) , Fe1 -aEuro parts per thousand x ) Cr2O4 form the major part of the inner layer of the film.

引用

页码：2265 / 2273

页数：9

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