Interdiffusion in the intermetallic compound β-AgMg

Yoshiaki Iijima, Shigeru Suzuki, Katsuhiko Kemmochi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Interdiffusion coefficients, D̃, in the β-AgMg phase from 42 to 52 at% Mg have been determined by Matano's method in the temperature range between 723 and 973 K with semi-infinite couples consisting of β-AgMg alloys. D̃ decreases with increase of the liquidus temperature and shows a minimum at 47 at% Mg which deviates slightly from the stoichiometric composition. D̃ is about one order of magnitude larger than the self-diffusion coefficient of silver in the whole concentration range of the β-AgMg phase. This difference can be attributed to the large thermodynamic factor for interdiffusion in the β-AgMg phase. The activation energy for the interdiffusion is nearly equal to that for the self-diffusion of silver, while the pre-exponential factor for the interdiffusion is about one order of magnitude larger than that for the self-diffusion of silver in the β-AgMg phase.

Original languageEnglish
Pages (from-to)91-97
Number of pages7
JournalIntermetallics
Volume4
Issue number2
DOIs
Publication statusPublished - 1996 Jan 1

Keywords

  • A. model systems
  • B. diffusion

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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