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 journalArticlepeer-review

    31 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

    Keywords

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

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Energy Engineering and Power Technology
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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