Diffusion in PdCuNiP alloys from the amorphous to the liquid state

A. Griesche*, Th Zumkley, M. P. Macht, S. Suzuki, G. Frohberg

*この研究の対応する著者

研究成果査読

6 被引用数 (Scopus)

抄録

Interdiffusion in molten PdCuNiP alloys above the melting temperature and impurity diffusion in Pd40Cu30Ni10P20 above and below the glass transition were investigated. For the interdiffusion measurements in the liquid alloys capillary methods were used in the temperature range from 973 to 1373K. Uphill diffusion was observed for Pd and P in the presence of chemical gradients of Cu and Ni, respectively. This result correlates with mixing enthalpies calculated for the partial ternary systems. The measured temperature dependence of the interdiffusion coefficients is in accordance with the prediction of the mode coupling theory (MCT).The temperature dependence of the impurity diffusion coefficients in the non-relaxed glass shows "non-linear" Arrhenius behaviour with a kink near the glass transition. After long time relaxation at temperatures well below the glass transition the coefficients follow an uniform Arrhenius dependence over the entire temperature range with reduced diffusion coefficients below the glass transition.

本文言語English
ページ(範囲)285-287
ページ数3
ジャーナルMaterials Science and Engineering A
375-377
1-2 SPEC. ISS.
DOI
出版ステータスPublished - 2004 7
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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