Interdiffusivity measurements and interface observations using Ni/Ni3Ge diffusion couples

N. Komai, M. Watanabe, Z. Horita

Research output: Contribution to journalArticle

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Abstract

Interdiffusivities have been determined from compositional variations measured across the Ni/Ni3Ge diffusion-couple interface with an analytical electron microscope (AEM) and an electron probe microanalyser (EPMA). The AEM was further used for microstructural observations in the vicinity of the γ/γ′ interphase interface, where γ represents the Ni-rich solid solution phase and γ′ the Ni3Ge-based ordered phase. The Sauer-Freise technique as well as the Boltzmann-Matano technique has been applied to the determination of interdiffusivities in the γ and γ′ phases. The interdiffusivities obtained in this study are compared with the self-diffusivities of Ge and Ni reported in the literature. It is shown that the present results are consistent with the earlier ones obtained from the Ni/Ni3Al diffusion-couple experiments.

Original languageEnglish
Pages (from-to)2967-2974
Number of pages8
JournalActa Metallurgica Et Materialia
Volume43
Issue number8
DOIs
Publication statusPublished - Aug 1995

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Electron microscopes
Solid solutions
Electrons
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Interdiffusivity measurements and interface observations using Ni/Ni3Ge diffusion couples. / Komai, N.; Watanabe, M.; Horita, Z.

In: Acta Metallurgica Et Materialia, Vol. 43, No. 8, 08.1995, p. 2967-2974.

Research output: Contribution to journalArticle

Komai, N. ; Watanabe, M. ; Horita, Z. / Interdiffusivity measurements and interface observations using Ni/Ni3Ge diffusion couples. In: Acta Metallurgica Et Materialia. 1995 ; Vol. 43, No. 8. pp. 2967-2974.
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