Electron microscopy study of Ni/Ni3Al diffusion-couple interface-II. Diffusivity measurement

M. Watanabe, Z. Horita, T. Sano, M. Nemoto

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Abstract

Interdiffusivities have been determined from compositional variations measured across the Ni/Ni3Al diffusion-couple interface with an analytical electron microscope (AEM) and an electron probe microanalyser (EPMA). The AEM was used for measurement at lower temperatures and the EPMA was used at higher temperatures. The Boltzmann-Matano technique has been applied to the determination of interdiffusivities in the Ni-rich disordered phase and those in the Ni3Al ordered phase. The interdiffusivities obtained in this study are compared with those reported in the literature including self-diffusivities and impurity diffusivities. It is shown that the present interdiffusivities are consistent with those predicted from the modified Darken's equation.

Original languageEnglish
Pages (from-to)3389-3396
Number of pages8
JournalActa Metallurgica Et Materialia
Volume42
Issue number10
DOIs
Publication statusPublished - Oct 1994

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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