Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment

Hongxu Cheng; Hong Luo; Xuefei Wang; Zhimin Pan; Yi Jiang; Xiaogang Li

doi:10.1016/j.matchemphys.2022.126837

Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment

Hongxu Cheng
, Hong Luo^*
, Xuefei Wang
, Zhimin Pan
, Yi Jiang
, Xiaogang Li

^*Corresponding author for this work

University of Science and Technology Beijing
Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)
Fujian Tsingtuo Special Steel Technology and Research Co. Ltd.

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

In this work, the electrochemical corrosion and passive behavior of a high-nitrogen austenite stainless steel named QN2109 in different NaCl solutions were studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Mott-Schottky analysis and X-ray photoelectron spectroscopy (XPS). QN2109 stainless steel exhibited a wide passive region and high impedance value in the chloride environment. The high ratio of O²⁻/OH⁻ made the passive film better self-repair effect, and the passive film is mainly composed of Mo-oxides, Fe-oxides and Cr-oxides, providing excellent pitting corrosion resistance at room temperature. The passive film with p-type and n-type semiconductor characteristics showed a double-layer structure. In addition, the influence of CrN and NH₃/NH₄⁺ in passive films was also discussed.

Original language	English
Article number	126837
Journal	Materials Chemistry and Physics
Volume	292
DOIs	https://doi.org/10.1016/j.matchemphys.2022.126837
State	Published - 1 Dec 2022
Externally published	Yes

Keywords

Austenitic stainless steel
Electrochemical behavior
Passive film
XPS

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10.1016/j.matchemphys.2022.126837

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title = "Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment",

abstract = "In this work, the electrochemical corrosion and passive behavior of a high-nitrogen austenite stainless steel named QN2109 in different NaCl solutions were studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Mott-Schottky analysis and X-ray photoelectron spectroscopy (XPS). QN2109 stainless steel exhibited a wide passive region and high impedance value in the chloride environment. The high ratio of O2−/OH− made the passive film better self-repair effect, and the passive film is mainly composed of Mo-oxides, Fe-oxides and Cr-oxides, providing excellent pitting corrosion resistance at room temperature. The passive film with p-type and n-type semiconductor characteristics showed a double-layer structure. In addition, the influence of CrN and NH3/NH4+ in passive films was also discussed.",

keywords = "Austenitic stainless steel, Electrochemical behavior, Passive film, XPS",

author = "Hongxu Cheng and Hong Luo and Xuefei Wang and Zhimin Pan and Yi Jiang and Xiaogang Li",

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year = "2022",

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doi = "10.1016/j.matchemphys.2022.126837",

language = "英语",

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TY - JOUR

T1 - Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment

AU - Cheng, Hongxu

AU - Luo, Hong

AU - Wang, Xuefei

AU - Pan, Zhimin

AU - Jiang, Yi

AU - Li, Xiaogang

PY - 2022/12/1

Y1 - 2022/12/1

N2 - In this work, the electrochemical corrosion and passive behavior of a high-nitrogen austenite stainless steel named QN2109 in different NaCl solutions were studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Mott-Schottky analysis and X-ray photoelectron spectroscopy (XPS). QN2109 stainless steel exhibited a wide passive region and high impedance value in the chloride environment. The high ratio of O2−/OH− made the passive film better self-repair effect, and the passive film is mainly composed of Mo-oxides, Fe-oxides and Cr-oxides, providing excellent pitting corrosion resistance at room temperature. The passive film with p-type and n-type semiconductor characteristics showed a double-layer structure. In addition, the influence of CrN and NH3/NH4+ in passive films was also discussed.

AB - In this work, the electrochemical corrosion and passive behavior of a high-nitrogen austenite stainless steel named QN2109 in different NaCl solutions were studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Mott-Schottky analysis and X-ray photoelectron spectroscopy (XPS). QN2109 stainless steel exhibited a wide passive region and high impedance value in the chloride environment. The high ratio of O2−/OH− made the passive film better self-repair effect, and the passive film is mainly composed of Mo-oxides, Fe-oxides and Cr-oxides, providing excellent pitting corrosion resistance at room temperature. The passive film with p-type and n-type semiconductor characteristics showed a double-layer structure. In addition, the influence of CrN and NH3/NH4+ in passive films was also discussed.

KW - Austenitic stainless steel

KW - Electrochemical behavior

KW - Passive film

KW - XPS

UR - https://www.scopus.com/pages/publications/85139019096

U2 - 10.1016/j.matchemphys.2022.126837

DO - 10.1016/j.matchemphys.2022.126837

M3 - 文章

AN - SCOPUS:85139019096

SN - 0254-0584

VL - 292

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

M1 - 126837

ER -

Electrochemical corrosion and passive behavior of a new high-nitrogen austenitic stainless steel in chloride environment

Abstract

Keywords

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