Viscosity of Zr55Cu30Al10Ni5 bulk metallic glass measured by laser viscometer

被引:9
|
作者
Liu, B. B. [1 ]
Liu, B. Y. [1 ]
Fang, X. S. [1 ]
Zhang, L. Q. [1 ]
Ye, F. [1 ]
Chen, G. L. [1 ]
机构
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
关键词
Bulk metallic glass; Viscometer; Viscosity; VFT equation; SUPERCOOLED LIQUID ALLOYS; PENETRATION VISCOMETER; VISCOUS-FLOW; DEFORMATION; REGION;
D O I
10.1016/j.jallcom.2010.02.197
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The viscosity of Zr55Cu30Al10Ni5 bulk metallic glass was measured by using a parallel plate rheometry laser viscometer. The isothermal measurements show that the viscosities increase from 10(12) to 10(13) Pa s with temperature varying from 668 to 738 K, which can be described by VFT equation with a VFT temperature of 390K and the fragility parameter D of 28.85. The viscosity from the isothermal measurement is higher than that from the isochronal measurement. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:S208 / S210
页数:3
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