Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy

Xue Qun Cheng; Cheng Tao Li; Chao Fang Dong; Xiao Gang Li

doi:10.1007/s12613-011-0397-x

Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy

Xue Qun Cheng^*
, Cheng Tao Li
, Chao Fang Dong
, Xiao Gang Li

^*Corresponding author for this work

University of Science and Technology Beijing
Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)

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

15 Scopus citations

Abstract

The passive film formed on 2205 duplex stainless steel (DSS) in 0.5 M NaHCO₃+0.5 M NaCl aqueous solution was characterized by electrochemical measurements, including potentiodynamic anodic polarization and dynamic electrochemical impedance spectroscopy (DEIS). The results demonstrate that there is a great difference between the passive film evolutions of ferrite and austenite. The impedance values of ferrite are higher than those of austenite. The impedance peaks of ferritic and austenitic phases correspond to the potential of 0.15 and 0.25 V in the low potential range and correspond to 0.8 and 0.75 V in the high potential range. The evolutions of the capacitance of both phases are reverse compared to the evolutions of impedance. The thickness variations obtained from capacitance agree well with those of impedance analysis. The results can be used to explain why pitting corrosion occurs more easily in austenite phase than in ferrite phase.

Original language	English
Pages (from-to)	42-47
Number of pages	6
Journal	International Journal of Minerals, Metallurgy and Materials
Volume	18
Issue number	1
DOIs	https://doi.org/10.1007/s12613-011-0397-x
State	Published - Feb 2011
Externally published	Yes

Keywords

Austenite
Electrochemical impedance spectroscopy
Ferrite
Films
Passivation
Stainless steel

Access to Document

10.1007/s12613-011-0397-x

Cite this

@article{a368c5e046f04dd48ded4ebcacd8a716,

title = "Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy",

abstract = "The passive film formed on 2205 duplex stainless steel (DSS) in 0.5 M NaHCO3+0.5 M NaCl aqueous solution was characterized by electrochemical measurements, including potentiodynamic anodic polarization and dynamic electrochemical impedance spectroscopy (DEIS). The results demonstrate that there is a great difference between the passive film evolutions of ferrite and austenite. The impedance values of ferrite are higher than those of austenite. The impedance peaks of ferritic and austenitic phases correspond to the potential of 0.15 and 0.25 V in the low potential range and correspond to 0.8 and 0.75 V in the high potential range. The evolutions of the capacitance of both phases are reverse compared to the evolutions of impedance. The thickness variations obtained from capacitance agree well with those of impedance analysis. The results can be used to explain why pitting corrosion occurs more easily in austenite phase than in ferrite phase.",

keywords = "Austenite, Electrochemical impedance spectroscopy, Ferrite, Films, Passivation, Stainless steel",

author = "Cheng, \{Xue Qun\} and Li, \{Cheng Tao\} and Dong, \{Chao Fang\} and Li, \{Xiao Gang\}",

year = "2011",

month = feb,

doi = "10.1007/s12613-011-0397-x",

language = "英语",

volume = "18",

pages = "42--47",

journal = "International Journal of Minerals, Metallurgy and Materials",

issn = "1674-4799",

publisher = "University of Science and Technology Beijing",

number = "1",

}

TY - JOUR

T1 - Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy

AU - Cheng, Xue Qun

AU - Li, Cheng Tao

AU - Dong, Chao Fang

AU - Li, Xiao Gang

PY - 2011/2

Y1 - 2011/2

N2 - The passive film formed on 2205 duplex stainless steel (DSS) in 0.5 M NaHCO3+0.5 M NaCl aqueous solution was characterized by electrochemical measurements, including potentiodynamic anodic polarization and dynamic electrochemical impedance spectroscopy (DEIS). The results demonstrate that there is a great difference between the passive film evolutions of ferrite and austenite. The impedance values of ferrite are higher than those of austenite. The impedance peaks of ferritic and austenitic phases correspond to the potential of 0.15 and 0.25 V in the low potential range and correspond to 0.8 and 0.75 V in the high potential range. The evolutions of the capacitance of both phases are reverse compared to the evolutions of impedance. The thickness variations obtained from capacitance agree well with those of impedance analysis. The results can be used to explain why pitting corrosion occurs more easily in austenite phase than in ferrite phase.

AB - The passive film formed on 2205 duplex stainless steel (DSS) in 0.5 M NaHCO3+0.5 M NaCl aqueous solution was characterized by electrochemical measurements, including potentiodynamic anodic polarization and dynamic electrochemical impedance spectroscopy (DEIS). The results demonstrate that there is a great difference between the passive film evolutions of ferrite and austenite. The impedance values of ferrite are higher than those of austenite. The impedance peaks of ferritic and austenitic phases correspond to the potential of 0.15 and 0.25 V in the low potential range and correspond to 0.8 and 0.75 V in the high potential range. The evolutions of the capacitance of both phases are reverse compared to the evolutions of impedance. The thickness variations obtained from capacitance agree well with those of impedance analysis. The results can be used to explain why pitting corrosion occurs more easily in austenite phase than in ferrite phase.

KW - Austenite

KW - Electrochemical impedance spectroscopy

KW - Ferrite

KW - Films

KW - Passivation

KW - Stainless steel

UR - https://www.scopus.com/pages/publications/79956072481

U2 - 10.1007/s12613-011-0397-x

DO - 10.1007/s12613-011-0397-x

M3 - 文章

AN - SCOPUS:79956072481

SN - 1674-4799

VL - 18

SP - 42

EP - 47

JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

IS - 1

ER -

Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this