Viscosity measurements of Zr 55Cu 30Al 10Ni 5 and Pd 40Cu 30Ni 10Pi 20 supercooled liquid alloys by using a penetration viscometer

T. Yamasaki, S. Maeda, Y. Yokoyama, D. Okai, T. Fukami, H. M. Kimura, A. Inoue

研究成果: Article査読

20 被引用数 (Scopus)

抄録

Viscosity of Zr 55Cu 30Al 10Ni 5 and Pd 40Cu 30Ni 10Pa 20 supercooled liquid alloys having bulk metallic glass forming ability has been measured by using a penetration viscometer with a cylindrical probe under high speed heating conditions at heating rates between 20 and 400°C/ min in the temperature range from the glass transition temperatures (T g) up to above the crystallization temperatures. The viscosity of these alloys decreased with increasing the heating rate and tended to saturate at the heating rate of 200°C/min and above. Their viscosity could be well represented by the Arrhenius relation. The activation energies for viscous flow for Zr 55Cu 30Al 10Ni 5 and Pd 40Cu 30Ni 10P 20 supercooled liquid alloys were about 350 and 250kJ/mol, respectively. The viscosity was also fitted by a Vogel-Fulcher-Tammann (VFT) relationship over the entire temperature range.

本文言語English
ページ(範囲)2746-2750
ページ数5
ジャーナルMaterials Transactions
46
12
DOI
出版ステータスPublished - 2005 12月
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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