Creep characteristics of porous Ni/Ni3Al anodes for molten carbonate fuel cells

Yun Sung Kim, Kwan Young Lee, Hai Soo Chun

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The creep behaviour of Ni/(4-7 wt.%) Ni3Al and Ni/5 wt.% Ni3Al/5 wt.% Cr anodes for molten carbonate fuel cells is classified in terms of two stages during a creep test for 100 h under an applied uniaxial load. The first stage relates to grain rearrangement which results from the destruction of large pores by the applied load. In the second stage, small pores are collapsed by a subsequent sintering process under the load. The creep resistance of the anodes is enhanced by increasing the sintering resistance through Ni3Al or Ni3Al and Cr inclusion, i.e. in comparison with anodes of pure Ni and Ni/10 wt.% Cr. The creep deformation of Ni/5 wt.% Ni3Al/5 wt.% Cr anode is decreased markedly by a synergistic effect of dispersion strengthening and solid-solution strengthening which results from Ni3Al and Cr addition.

Original languageEnglish
Pages (from-to)26-33
Number of pages8
JournalJournal of Power Sources
Volume99
Issue number1-2
DOIs
Publication statusPublished - 2001 Aug 1

Keywords

  • Anode
  • Creep
  • Molten carbonate fuel cell
  • NiAl
  • Sintering resistance

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry

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