Characterization of interfacial reactions and oxide films on 316L stainless steel in various simulated PWR primary water environments

被引：55

作者：

Chen, Junjie ^{[1
,2
]}

Xiao, Qian ^{[1
,2
]}

Lu, Zhanpeng ^{[1
,2
,3
]}

Ru, Xiangkun ^{[1
]}

Peng, Hao ^{[1
]}

Xiong, Qi ^{[1
]}

Li, Hongjuan ^{[1
]}

机构：

[1] Shanghai Univ, Inst Mat Sci, Sch Mat Sci & Engn, Mailbox 269,149 Yanchang Rd, Shanghai 200072, Peoples R China

[2] Shanghai Univ, State Key Lab Adv Special Steels, 149 Yanchang Rd, Shanghai 200072, Peoples R China

[3] Shanghai Univ, Shanghai Key Lab Adv Ferromet, 149 Yanchang Rd, Shanghai 200072, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 489卷

基金：

中国国家自然科学基金;

关键词：

316L stainless steel; Pressurized water reactor; Corrosion; Water chemistry; Electrochemical impedance spectroscopy; Transmission electron microscope; STRESS-CORROSION CRACKING; REVISED POURBAIX DIAGRAMS; TEMPERATURE AQUEOUS CORROSION; NI-BASE ALLOYS; 288-DEGREES-C WATER; NICKEL-ALLOYS; ELECTROCHEMICAL IMPEDANCE; OXYGEN CONCENTRATION; DISSOLVED HYDROGEN; ZN INJECTION;

D O I：

10.1016/j.jnucmat.2017.03.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of water chemistry on the electrochemical and oxidizing behaviors of 316L SS was investigated in hydrogenated, deaerated and oxygenated PWR primary water at 310 degrees C. Water chemistry significantly influenced the electrochemical impedance spectroscopy parameters. The highest charge-transfer resistance and oxide-film resistance occurred in oxygenated water. The highest electric double-layer capacitance and constant phase element of the oxide film were in hydrogenated water. The oxide films formed in deaerated and hydrogenated environments were similar in composition but different in morphology. An oxide film with spinel outer particles and a compact and Cr-rich inner layer was formed in both hydrogenated and deaerated water. Larger and more loosely distributed outer oxide particles were formed in deaerated water. In oxygenated water, an oxide film with hematite outer particles and a porous and Ni-rich inner layer was formed. The reaction kinetics parameters obtained by electrochemical impedance spectroscopy measurements and oxidation film properties relating to the steady or quasisteady state conditions in the time-period of measurements could provide fundamental information for understanding stress corrosion cracking processes and controlling parameters. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：137 / 149

页数：13

共 77 条

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