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

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

Research output: Contribution to journalArticle

60 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 languageEnglish
Pages (from-to)671-676
Number of pages6
JournalJournal of Power Sources
Volume178
Issue number2
DOIs
Publication statusPublished - 2008 Apr 1

Fingerprint

Stainless Steel
Proton exchange membrane fuel cells (PEMFC)
corrosion resistance
fuel cells
Corrosion resistance
stainless steels
Stainless steel
membranes
protons
cementation
contact resistance
voids
Contact resistance
surface layers
corrosion
Electrochemical properties
degradation
Corrosion
Degradation

Keywords

  • Bipolar plates
  • Chromizing
  • Corrosion
  • PEM fuel cell
  • Stainless steel

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates. / Cho, K. H.; Lee, W. G.; Lee, S. B.; Jang, Ho.

In: Journal of Power Sources, Vol. 178, No. 2, 01.04.2008, p. 671-676.

Research output: Contribution to journalArticle

Cho, K. H. ; Lee, W. G. ; Lee, S. B. ; Jang, Ho. / Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates. In: Journal of Power Sources. 2008 ; Vol. 178, No. 2. pp. 671-676.
@article{adee7fe1ad72471da4460e90a903a957,
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 Ho Jang",
year = "2008",
month = "4",
day = "1",
doi = "10.1016/j.jpowsour.2007.09.031",
language = "English",
volume = "178",
pages = "671--676",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

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, Ho

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

UR - http://www.scopus.com/inward/record.url?scp=40149085582&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40149085582&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2007.09.031

DO - 10.1016/j.jpowsour.2007.09.031

M3 - Article

VL - 178

SP - 671

EP - 676

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 2

ER -