skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1];  [1];  [1]
  1. Oak Ridge, TN
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014936
Patent Number(s):
7,829,194
Application Number:
US Patent Application 11/582,034
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
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. doi:. 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 = {Tue Nov 09 00:00:00 EST 2010},
month = {Tue Nov 09 00:00:00 EST 2010}
}

Patent:

Save / Share: