Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates

K. H. Cho; W. G. Lee; S. B. Lee; H. Jang

doi:10.1016/j.jpowsour.2007.09.031

Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates

K. H. Cho, W. G. Lee, S. B. Lee, H. Jang

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

84 Citations (Scopus)

Abstract

Corrosion resistance of the chromized 316L stainless steel was studied in a proton exchange membrane fuel cell (PEMFC) operating condition. Cr-rich surface layer was formed by pack cementation technique and electrochemical properties of the chromized surface were examined by potentiodynamic and potentiostatic tests. Results showed that the Cr-rich layers underneath the free surface passivated the surface and protect the surface from corrosion in 0.5 M H₂SO₄ solution at 80 °C. However, the Cr-rich layers showed columnar grains with voids when the stainless steel was pack cemented for an extended period of time, resulting in drastic degradation of corrosion resistance. The optimum condition for the best corrosion resistance in the PEMFC operating condition was obtained without sacrificing the interfacial contact resistance.

Original language	English
Pages (from-to)	671-676
Number of pages	6
Journal	Journal of Power Sources
Volume	178
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2007.09.031
Publication status	Published - 2008 Apr 1

Bibliographical note

Funding Information:
This work was supported by the grants from the Seoul R&BD Program at Korea University.

Keywords

Bipolar plates
Chromizing
Corrosion
PEM fuel cell
Stainless steel

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2007.09.031

Cite this

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title = "Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates",

abstract = "Corrosion resistance of the chromized 316L stainless steel was studied in a proton exchange membrane fuel cell (PEMFC) operating condition. Cr-rich surface layer was formed by pack cementation technique and electrochemical properties of the chromized surface were examined by potentiodynamic and potentiostatic tests. Results showed that the Cr-rich layers underneath the free surface passivated the surface and protect the surface from corrosion in 0.5 M H2SO4 solution at 80 °C. However, the Cr-rich layers showed columnar grains with voids when the stainless steel was pack cemented for an extended period of time, resulting in drastic degradation of corrosion resistance. The optimum condition for the best corrosion resistance in the PEMFC operating condition was obtained without sacrificing the interfacial contact resistance.",

keywords = "Bipolar plates, Chromizing, Corrosion, PEM fuel cell, Stainless steel",

author = "Cho, {K. H.} and Lee, {W. G.} and Lee, {S. B.} and H. Jang",

note = "Funding Information: This work was supported by the grants from the Seoul R&BD Program at Korea University.",

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doi = "10.1016/j.jpowsour.2007.09.031",

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T1 - Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates

AU - Cho, K. H.

AU - Lee, W. G.

AU - Lee, S. B.

AU - Jang, H.

N1 - Funding Information: This work was supported by the grants from the Seoul R&BD Program at Korea University.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - Corrosion resistance of the chromized 316L stainless steel was studied in a proton exchange membrane fuel cell (PEMFC) operating condition. Cr-rich surface layer was formed by pack cementation technique and electrochemical properties of the chromized surface were examined by potentiodynamic and potentiostatic tests. Results showed that the Cr-rich layers underneath the free surface passivated the surface and protect the surface from corrosion in 0.5 M H2SO4 solution at 80 °C. However, the Cr-rich layers showed columnar grains with voids when the stainless steel was pack cemented for an extended period of time, resulting in drastic degradation of corrosion resistance. The optimum condition for the best corrosion resistance in the PEMFC operating condition was obtained without sacrificing the interfacial contact resistance.

AB - Corrosion resistance of the chromized 316L stainless steel was studied in a proton exchange membrane fuel cell (PEMFC) operating condition. Cr-rich surface layer was formed by pack cementation technique and electrochemical properties of the chromized surface were examined by potentiodynamic and potentiostatic tests. Results showed that the Cr-rich layers underneath the free surface passivated the surface and protect the surface from corrosion in 0.5 M H2SO4 solution at 80 °C. However, the Cr-rich layers showed columnar grains with voids when the stainless steel was pack cemented for an extended period of time, resulting in drastic degradation of corrosion resistance. The optimum condition for the best corrosion resistance in the PEMFC operating condition was obtained without sacrificing the interfacial contact resistance.

KW - Bipolar plates

KW - Chromizing

KW - Corrosion

KW - PEM fuel cell

KW - Stainless steel

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DO - 10.1016/j.jpowsour.2007.09.031

M3 - Article

AN - SCOPUS:40149085582

SN - 0378-7753

VL - 178

SP - 671

EP - 676

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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