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Performance of Ce Surface Treated Ferritic Stainless Steels for Solid Oxide Fuel Cell Interconnects.


DE2008916952

Publication Date 2007
Personal Author Alman, D. E.; Jablonski, P. D.
Page Count 24
Abstract This research deals with the effect of a Ce surface treatment on the behavior of Fe-Cr-Mn ferritic stainless steels which may have application in SOFC technology. This treatment consisted of applying a slurry of CeO2 and a halide activator to the surface of coupons. After the slurry dried the coupons were heated to 900 degrees C in a controlled atmosphere furnace for 12 hours. The effectiveness of the treatment on commercial (Type 409 (12Cr), Type 430 (18Cr), Crofer 22APU (22Cr), Type 446(26Cr)) and experimental (NETL F9 (12Cr) and NETL F5 (22Cr)) alloys as a function of Cr content will be presented. The oxidation behavior of the alloys was assessed by exposing coupons (untreated and treated) to moist air at 800 degrees C. Area specific resistance (ASR) was measured at 800 degrees C. In general, the rare earth treatment effectively reduced the oxidation rate, resulting in thinner oxide scales and less internal oxidation.
Keywords
  • Ferritic steels
  • Stainless steels
  • Solid oxide fuel cells
  • Oxides
  • Alloys
  • Interconnectors
  • Oxidation
  • Surface treatment
  • Microstructure
  • Performance evaluation
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors National Energy Technology Lab., Pittsburgh, PA.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 200825
Performance of Ce Surface Treated Ferritic Stainless Steels for Solid Oxide Fuel Cell Interconnects.
Performance of Ce Surface Treated Ferritic Stainless Steels for Solid Oxide Fuel Cell Interconnects.
DE2008916952

  • Ferritic steels
  • Stainless steels
  • Solid oxide fuel cells
  • Oxides
  • Alloys
  • Interconnectors
  • Oxidation
  • Surface treatment
  • Microstructure
  • Performance evaluation
  • Technical Information Center Oak Ridge Tennessee
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