Understanding the corrosion behavior of chromia-forming 316L stainless steel in dual oxidizing-reducing environment representative of SOFC interconnect Metadata

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Title

  • Main Title Understanding the corrosion behavior of chromia-forming 316L stainless steel in dual oxidizing-reducing environment representative of SOFC interconnect

Creator

  • Author: Ziomek-Moroz, Margaret
    Creator Type: Personal
  • Author: Cramer, Stephen D.
    Creator Type: Personal
  • Author: Holcomb, Gordon R.
    Creator Type: Personal
  • Author: Covino, Bernard S., Jr.
    Creator Type: Personal
  • Author: Matthes, Steven A.
    Creator Type: Personal
  • Author: Bullard, Sophie J.
    Creator Type: Personal
  • Author: Dunning, John S.
    Creator Type: Personal
  • Author: Alman, David E.
    Creator Type: Personal
  • Author: Singh, P. (PNNL)
    Creator Type: Personal

Contributor

  • Sponsor: United States. Office of Fossil Energy.
    Contributor Type: Organization
    Contributor Info: USDOE - Office of Fossil Energy (FE)

Publisher

  • Name: Fuel Cell Seminar, Courtesy Associates, 2025 M Street, NW Suite #800, Washington, DC 20036
  • Name: Albany Research Center (United States. Bureau of Mines)
    Place of Publication: Albany, Oregon
    Additional Info: Albany Research Center (ARC), Albany, OR

Date

  • Creation: 2003-11-01

Language

  • English

Description

  • Content Description: A and B site doped LaCrO3-based electronically conducting Perovskite ceramic materials have been extensively used as interconnects in solid oxide fule cells (SOFC) operating at 800° to 1000°C as the Perovskites offer good electrical conductivity, chemical compatibility with the adjacent components of the fuel cell, chemical stability in reducing and oxidizing atmospheres, and thermal expansion coefficients that match other cell components. However, requirements for good mechanical properties, electrical and thermal conductivities, and low cost make metallic interconnects more promising. Significant progress in reducing the operating temperature of SOFC from ~1000°C to ~750°C is expected to permit the use of metallic materials with substantial cost reduction. Among the commercially available metallic materials, Cr2O3 (chromia) scale-forming iron base alloys appear to be the most promising candidates since they can fulfill the technical and economical requirements. These alloys, however, remain prone to reactions with oxygen and water vapor at fuel cell operating conditions and formation of gaseous chromium oxides and oxyhydroxides. To study the degradation processes and corrosion mechanisms of commercial chromia scale-forming alloys under SOFC interconnect exposure conditions, 316L was selected for this research because of the availability of the materials. The dual environment to which the interconnect material was exposed consisted of dry air (simulates the cathode side environment) and a mixture of H2 and 3% H2O (simulates the anode side environment). Post-corrosion surface evaluation involved the use of optical and scanning electron microscopy, as well as energy dispersive X-ray analyses.

Subject

  • Keyword: Corrosion
  • Keyword: Mechanical Properties
  • Keyword: Alloys
  • Keyword: Cathodes
  • Keyword: Interconnects
  • Keyword: Anodes
  • STI Subject Categories: 36 Materials Science
  • Keyword: Thermal Expansion
  • Keyword: Scanning Electron Microscopy
  • Keyword: Stainless Steels
  • Keyword: Solid Oxide Fuel Cells
  • Keyword: Iron Base Alloys
  • Keyword: Perovskite
  • Keyword: Fuel Cells
  • Keyword: Chromium Oxides
  • Keyword: Water Vapor Interconnects
  • Keyword: Electric Conductivity

Source

  • Conference: 2003 Fuel Cell Seminar, Miami Beach, FL, Nov. 3-7, 2003

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: DOE/ARC-2004-065
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 901688
  • Archival Resource Key: ark:/67531/metadc888851

Note

  • Display Note: Publisher - Extended abstract available in 2003 Fuel Cell Seminar Abstracts, Nov. 2003, pp. 522-525