The role of chemical order in the temperature and composition dependence of the viscosity of liquid alloys

被引：10

作者：

Meyer, N. ^{[1
]}

Xu, H. ^{[1
]}

Wax, J. -F. ^{[1
]}

机构：

[1] Univ Lorraine, LCP A2MC, F-57000 Metz, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2019年 / 150卷 / 17期

关键词：

CONCENTRATION FLUCTUATIONS; ENERGY; MODEL;

D O I：

10.1063/1.5092694

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 influence of the chemical order on the viscosity of liquid alloys is investigated by numerical simulation of molecular dynamics. The temperature and composition dependence is discussed in the case of two contrasting alloys: K-Cs and Li-Bi. These two mixtures have different chemical orders, the first one being random and the second one having strong heterocoordination tendencies. In the case of K-Cs, the behavior of the mixture vs temperature is similar to a pure system and its viscosity varies monotonically with the composition. It is not the case for Li-Bi due to its marked chemical order and the heterocoordination tendency is accompanied by a maximum of the viscosity of the mixture when the composition is changed. For the first time, estimates of the temperature dependence of the viscosity of three representative Li-Bi alloys are given. Published under license by AIP Publishing.

引用

页数：9

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