液态 Na15Pb4 和 Na50Pb50 合金的焓和热容量

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-03-20 DOI:10.1134/S0869864323060185

A. R. Khairulin, S. V. Stankus

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引用次数: 0

摘要

使用等温滴入式量热仪测量了 Na15Pb4 和 Na50Pb50 合金的焓增量，并测定了 420-1075 K 温度范围内（包括固态和液态）的热容量。结果表明，熔体的热容量值大大超出了根据理想溶液定律计算得出的数值，而且这种差异随着温度的升高而减小。所获得的结果证实了目前存在的观点，即在碱金属与铅体系的熔体中会形成原子间相互作用具有部分离子特性的各种络合物。

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Enthalpy and heat capacity of liquid Na15Pb4 and Na50Pb50 alloys

Using an isothermal drop calorimeter, the enthalpy increment of the Na₁₅Pb₄ and Na₅₀Pb₅₀ alloys was measured and the heat capacity was determined in the temperature range of 420–1075 K, including the solid and liquid states. It has been established that the values of the heat capacity of melts significantly exceed the calculations of this value according to the laws for an ideal solution, and this difference decreases with increasing temperature. The obtained results confirm the currently existing ideas that various complexes with a partially ionic character of the interatomic interaction are formed in the melts of alkali metals with lead systems.

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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.