Viscosity of liquid In-Se-Tl alloys in the miscibility gap region

被引:8
作者
Plevachuk, Yu. [1 ]
Sklyairchuk, V. [1 ]
Alekhin, O. [2 ]
Bulavin, L. [2 ]
机构
[1] Ivan Franko Natl Univ, Dept Met Phys, UA-79005 Lvov, Ukraine
[2] Kyiv Natl Taras Shevchenko Univ, Fac Phys, UA-03022 Kiev, Ukraine
关键词
metals and alloys; electronic properties; phase diagrams; phase transitions; viscosity;
D O I
10.1016/j.jallcom.2006.12.160
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 shear viscosity measurements were performed for liquid InxSe20Tl80-x (0 <= x <= 80 at.%) alloys over a wide temperature range above the monotectic using an oscillating-cup viscometer. In this range the ternary In-Se-Tl system may be considered as a set of "quasibinary" immiscible metal-chalcogen alloys of critical composition. Variation of the In/Tl ratio at a constant Se content changes the properties of the coexisting liquids and affects the temperature of demixing. The critical parameters describing the peculiarities of the viscosity behavior in the vicinity of the critical point are evaluated. Based on the dynamic theory of phase transitions a description of the viscosity in the region of phase separation is proposed. The results are compared with available data for immiscible dielectric solutions and metallic melts. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:174 / 177
页数:4
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