Anomalous temperature dependence of liquid state density for Ni50Ti50 alloy investigated under electrostatic levitation state

被引：20

作者：

Zou, P. F. ^{[1
]}

Wang, H. P. ^{[1
]}

Yang, S. J. ^{[1
]}

Hu, L. ^{[1
]}

Wei, B. ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2017年 / 681卷

基金：

中国国家自然科学基金;

关键词：

Thermophysical properties; Undercooling; Liquid metal; SHAPE-MEMORY ALLOYS; THERMOPHYSICAL PROPERTIES; DEFORMATION;

D O I：

10.1016/j.cplett.2017.05.059

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 density of liquid Ni-Ti alloys were measured by electrostatic levitation technique and the maximum reduced undercooling of triangle T/T-L reaches 0.23. Quite different from the linear relationship between density and temperature for liquid Ni45Ti55 and Ni55Ti45 alloys, the density of liquid Ni50Ti50 alloy displays a nonlinear dependence on temperature. Interestingly, the density increasing tendency of liquid Ni50Ti50 alloy rises more rapidly with the decrease of temperature, which results from the more severe shrinking of the distance among atoms at lower temperatures. In addition, the thermal expansion coefficient of liquid Ni50Ti50 alloy increases linearly with the decrease of temperature. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：101 / 104

页数：4

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