Intrinsic diffusion in Ni3Al

K. Fujiwara, Z. Horita

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    Intrinsic diffusion coefficients of Al and Ni in Ni3Al are determined using Ni/NiAl couples. The composition of the NiAl is controlled so that the Kirkendall interface is present in the Ni3Al phase formed in the couple. Concentration profiles are measured across the interface and interdiffusion coefficients of Ni3Al are determined from the profiles using the Sauer-Freise technique. The Darken's equation is applied for the determination of the intrinsic diffusion coefficients. It is shown that the intrinsic diffusion coefficients of Al and Ni in Ni3Al are in almost the same magnitude. The self-diffusion coefficients of Al and Ni in Ni3Al are also estimated using the Manning equation. The present results are consistent with the diffusion mechanisms considering anti-site defects.

    Original languageEnglish
    Pages (from-to)565-570
    Number of pages6
    JournalDefect and Diffusion Forum
    Issue number194-199 PART 1
    DOIs
    Publication statusPublished - 2001

    All Science Journal Classification (ASJC) codes

    • Radiation
    • Materials Science(all)
    • Condensed Matter Physics

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