Iron-based alloy and nitridation treatment for PEM fuel cell bipolar plates
Abstract
A corrosion resistant electrically conductive component that can be used as a bipolar plate in a PEM fuel cell application is composed of an alloy substrate which has 10-30 wt. % Cr, 0.5 to 7 wt. % V, and base metal being Fe, and a continuous surface layer of chromium nitride and vanadium nitride essentially free of base metal. A oxide layer of chromium vanadium oxide can be disposed between the alloy substrate and the continuous surface nitride layer. A method to prepare the corrosion resistant electrically conductive component involves a two-step nitridization sequence by exposing the alloy to a oxygen containing gas at an elevated temperature, and subsequently exposing the alloy to an oxygen free nitrogen containing gas at an elevated temperature to yield a component where a continuous chromium nitride layer free of iron has formed at the surface.
- Inventors:
-
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1014936
- Patent Number(s):
- 7829194
- Application Number:
- US Patent Application 11/582,034
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Brady, Michael P, Yang, Bing, and Maziasz, Philip J. Iron-based alloy and nitridation treatment for PEM fuel cell bipolar plates. United States: N. p., 2010.
Web.
Brady, Michael P, Yang, Bing, & Maziasz, Philip J. Iron-based alloy and nitridation treatment for PEM fuel cell bipolar plates. United States.
Brady, Michael P, Yang, Bing, and Maziasz, Philip J. Tue .
"Iron-based alloy and nitridation treatment for PEM fuel cell bipolar plates". United States. https://www.osti.gov/servlets/purl/1014936.
@article{osti_1014936,
title = {Iron-based alloy and nitridation treatment for PEM fuel cell bipolar plates},
author = {Brady, Michael P and Yang, Bing and Maziasz, Philip J},
abstractNote = {A corrosion resistant electrically conductive component that can be used as a bipolar plate in a PEM fuel cell application is composed of an alloy substrate which has 10-30 wt. % Cr, 0.5 to 7 wt. % V, and base metal being Fe, and a continuous surface layer of chromium nitride and vanadium nitride essentially free of base metal. A oxide layer of chromium vanadium oxide can be disposed between the alloy substrate and the continuous surface nitride layer. A method to prepare the corrosion resistant electrically conductive component involves a two-step nitridization sequence by exposing the alloy to a oxygen containing gas at an elevated temperature, and subsequently exposing the alloy to an oxygen free nitrogen containing gas at an elevated temperature to yield a component where a continuous chromium nitride layer free of iron has formed at the surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}
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Works referenced in this record:
Hot Isostatic Pressing of Chromium Nitrides (Cr2N and CrN) Prepared by Self-Propagating High-Temperature Synthesis
journal, September 2001
- Hirota, Ken; Takano, Yoshihiko; Yoshinaka, Masaru
- Journal of the American Ceramic Society, Vol. 84, Issue 9
The development of Cr2O3 scales on iron-chromium alloys containing reactive elements
journal, January 1989
- Wei, F. I.; Stott, F. H.
- Corrosion Science, Vol. 29, Issue 7
High-temperature nitridation of Ni-Cr alloys
journal, January 1996
- Kodentsov, A. A.; Gülpen, J. H.; Cserháti, C.
- Metallurgical and Materials Transactions A, Vol. 27, Issue 1
Corrosion behavior of CrN, Cr2N and π phase surfaces on nitrided Ni–50Cr for proton exchange membrane fuel cell bipolar plates
journal, October 2006
- Paulauskas, I. E.; Brady, M. P.; Meyer, H. M.
- Corrosion Science, Vol. 48, Issue 10
Effect of Surface Nitriding on Corrosion Resistance of Chromium in Sulfuric Acid Solution
journal, January 1991
- Taguchi, Masami; Kurihara, Jiro
- Materials Transactions, JIM, Vol. 32, Issue 12
Microstructural Evolution in the Oxidized Chromium Nitride Coatings Prepared by Unbalanced Magnetron Sputtering
journal, January 2003
- Wang, C. C.; Hsieh, W. P.; Shiao, M. H.
- Journal of The Electrochemical Society, Vol. 150, Issue 5
The formation of protective nitride surfaces for PEM fuel cell metallic bipolar plates
journal, August 2006
- Brady, M. P.; Yang, B.; Wang, H.
- JOM, Vol. 58, Issue 8
Thermodynamic characteristics and numerical modeling of internal nitridation of nickel base alloys
journal, November 2003
- Christ, H. -J.; Chang, S. -Y.; Krupp, U.
- Materials and Corrosion, Vol. 54, Issue 11
A study of the corrosion behaviour and protective quality of sputtered chromium nitride coatings
journal, April 2000
- Bertrand, G.; Mahdjoub, H.; Meunier, C.
- Surface and Coatings Technology, Vol. 126, Issue 2-3
Comparative study between the electrochemical behavior of TiN, TiCxNy and CrN hard coatings by using microscopy and electrochemical techniques
journal, January 2001
- Senna, L. F.; Achete, C. A.; Simão, R. A.
- Materials Research, Vol. 4, Issue 2