Measurements of Interdiffusion Coefficients in Liquid AuGe Alloy

Keiji Tanimoto*, Yuki Ando, Koji Suzuki, Yoshihiko Yokoyama, Shinsuke Suzuki

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

As for alloy systems forming amorphous structure, it is very useful to pursue the diffusion mechanism of the eutectic alloys in the vicinity of the eutectic point to elucidate the amorphous developmental process. We therefore investigated interdiffusion coefficients in the liquid state of AuGe and AuSi alloy, which remarkably have the deep eutectic temperature. The diffusion experiments using a shear cell device were performed in the temperature range from 686 K to 1073 K. The acquired data seem to be reliable, because they were reproducible and overlapping well on fitting curves so that the convection would have been suppressed. As a result, the temperature dependence of the interdiffusion coefficients in the liquid AuGe alloy was expressed in the Arrhenius equation and no peculiarity in the diffusion mechanism was confirmed. The values of interdiffusion coefficient of this study would be highly appropriate considering the past experimental values of self-diffusion coefficients of AuSi alloy and the negative mixing enthalpy of the alloy system. In addition, the previous research on structure analysis in which the shoulder was not observed in the vicinity of the eutectic point supported our confirmation of the Arrhenius expression for the temperature dependence of the interdiffusion coefficients in the liquid AuGe.

本文言語English
ページ(範囲)345-351
ページ数7
ジャーナルMicrogravity Science and Technology
27
5
DOI
出版ステータスPublished - 2015 9 1

ASJC Scopus subject areas

  • モデリングとシミュレーション
  • 工学(全般)
  • 物理学および天文学(全般)
  • 応用数学

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