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Continuous Measurements of Density of Liquid Metals, Salts and Fluxes from Solid to Liquid, and Theoretical Analyses of Density

液态金属、盐和熔剂从固到液的密度连续测量以及密度的理论分析

基本信息

批准号：
61470058
负责人：
IIDA Takamichi
金额：
$ 3.07万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

项目摘要

In discussing the nature and behaviour of materials, density is an indispensable basic quantity. Experimental and theoretical studies on density have been made in this work. Both the dilatometric method and the indirect archimedean method have been used for continuous measurements of density from solid to liquid. In addition, theoretical analyses of density have also been carries out. The essential points of the two techniques used in this experiment are described in the reference book. the results obtained are as follows:1. The experimental errors of approximately 0.2-0.3% have been estimated for the density values of solid and liquid indium-tin and gallium-indium alloys. 2. The density values for pure liquid gallium and indium at their melting points are 6.128x10^3kgm^<-3> and 7.024x10^3kgm^<-3>, respectively. 3. The isothermal densities of both solid and liquid indium-tin alloys show negative deviations from the additivity principle. 4. The isothermal densities of both solid and liquid gallium-indium alloys show positive deviations from the additivity principle. 5. The temperature dependence of liquid metal density varies periodically with atomic number. 6. The temperature dependence of liquid metal density is proportional to the product of the repulsive exponent of the pair potential and the square root of the atomic weight. 7. At present, mercury is the only liquid metal whose density is accurately known. More accurate density data on various materials are still needed.

在讨论材料的性质和性能时，密度是一个不可缺少的基本量。本文对密度进行了实验和理论研究。阿基米德法和间接阿基米德法都曾用于从固体到液体的密度的连续测量。此外，还对密度进行了理论分析。参考书中描述了这个实验中使用的两种技术的要点。结果如下：1.固体和液体铟锡和镓铟合金密度值的实验误差约为0.2-0.3%。2.纯液态镓和铟在熔点时的密度值分别为6.128x10^3kgm^<-3>和7.024x10^3kgm^<-3>。3.固态和液态铟锡合金的等温密度都表现出负的偏离加和原理。4.固态和液态镓铟合金的等温密度都显示出正的偏离加和原理。5.液态金属密度的温度依赖性随原子序数呈周期性变化。6.液态金属密度的温度依赖性与对势的排斥指数和原子量的平方根的乘积成正比。7.目前，汞是唯一一种密度已知的液态金属。仍然需要关于各种材料的更准确的密度数据。