Calculation and analysis of diffusivity of point defects in passive film formed on 2205 duplex stainless steel and 316l austenitic stainless steel

Zuojia Liu; Xuequn Cheng; Xiaohui Liu; Xiaogang Li

Calculation and analysis of diffusivity of point defects in passive film formed on 2205 duplex stainless steel and 316l austenitic stainless steel

Zuojia Liu^*
, Xuequn Cheng
, Xiaohui Liu
, Xiaogang Li

^*Corresponding author for this work

University of Science and Technology Beijing
SINOPEC

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

4 Scopus citations

Abstract

The diffusivity of point defects in the passive film formed on 2205 duplex stainless steel and 316L stainless steel in NaCl solution was calculated by means of capacitance measurement and PDM (point defect model). The calculated result was testified and analyzed by experimental steady current density of passive film and PDM. It is showed that the order of magnitude of diffusivity is about 10^-23 cm²/s~10^-20 cm²/s, and the diffusivity of 2205 DSS is less than 316L SS in simulated ocean solution. It is concluded that the diffusion of point defect which is caused by oxygen vacancy in 2205 DSS is harder than 316L SS, so in contrast to 316L SS, the passive film of 2205 DSS is much densified and compact with completeness and excellent protection.

Original language	English
Pages (from-to)	273-277
Number of pages	5
Journal	Journal of the Chinese Society of Corrosion and Protection
Volume	30
Issue number	4
State	Published - 2010
Externally published	Yes

Keywords

Capacitance measurement
Diffusivity
Passive film
Point defect model
Steady current density

Cite this

@article{f13b206e5fa143b495bf6029eda0c0e9,

title = "Calculation and analysis of diffusivity of point defects in passive film formed on 2205 duplex stainless steel and 316l austenitic stainless steel",

abstract = "The diffusivity of point defects in the passive film formed on 2205 duplex stainless steel and 316L stainless steel in NaCl solution was calculated by means of capacitance measurement and PDM (point defect model). The calculated result was testified and analyzed by experimental steady current density of passive film and PDM. It is showed that the order of magnitude of diffusivity is about 10-23 cm2/s\textasciitilde{}10-20 cm2/s, and the diffusivity of 2205 DSS is less than 316L SS in simulated ocean solution. It is concluded that the diffusion of point defect which is caused by oxygen vacancy in 2205 DSS is harder than 316L SS, so in contrast to 316L SS, the passive film of 2205 DSS is much densified and compact with completeness and excellent protection.",

keywords = "Capacitance measurement, Diffusivity, Passive film, Point defect model, Steady current density",

author = "Zuojia Liu and Xuequn Cheng and Xiaohui Liu and Xiaogang Li",

year = "2010",

language = "英语",

volume = "30",

pages = "273--277",

journal = "Journal of the Chinese Society of Corrosion and Protection",

issn = "1005-4537",

publisher = "Chinese Society of Corrosion and Protection",

number = "4",

}

TY - JOUR

T1 - Calculation and analysis of diffusivity of point defects in passive film formed on 2205 duplex stainless steel and 316l austenitic stainless steel

AU - Liu, Zuojia

AU - Cheng, Xuequn

AU - Liu, Xiaohui

AU - Li, Xiaogang

PY - 2010

Y1 - 2010

N2 - The diffusivity of point defects in the passive film formed on 2205 duplex stainless steel and 316L stainless steel in NaCl solution was calculated by means of capacitance measurement and PDM (point defect model). The calculated result was testified and analyzed by experimental steady current density of passive film and PDM. It is showed that the order of magnitude of diffusivity is about 10-23 cm2/s~10-20 cm2/s, and the diffusivity of 2205 DSS is less than 316L SS in simulated ocean solution. It is concluded that the diffusion of point defect which is caused by oxygen vacancy in 2205 DSS is harder than 316L SS, so in contrast to 316L SS, the passive film of 2205 DSS is much densified and compact with completeness and excellent protection.

AB - The diffusivity of point defects in the passive film formed on 2205 duplex stainless steel and 316L stainless steel in NaCl solution was calculated by means of capacitance measurement and PDM (point defect model). The calculated result was testified and analyzed by experimental steady current density of passive film and PDM. It is showed that the order of magnitude of diffusivity is about 10-23 cm2/s~10-20 cm2/s, and the diffusivity of 2205 DSS is less than 316L SS in simulated ocean solution. It is concluded that the diffusion of point defect which is caused by oxygen vacancy in 2205 DSS is harder than 316L SS, so in contrast to 316L SS, the passive film of 2205 DSS is much densified and compact with completeness and excellent protection.

KW - Capacitance measurement

KW - Diffusivity

KW - Passive film

KW - Point defect model

KW - Steady current density

UR - https://www.scopus.com/pages/publications/77957941992

M3 - 文章

AN - SCOPUS:77957941992

SN - 1005-4537

VL - 30

SP - 273

EP - 277

JO - Journal of the Chinese Society of Corrosion and Protection

JF - Journal of the Chinese Society of Corrosion and Protection

IS - 4

ER -

Calculation and analysis of diffusivity of point defects in passive film formed on 2205 duplex stainless steel and 316l austenitic stainless steel

Abstract

Keywords

Other files and links

Fingerprint

Cite this