Cs-Pb系液态合金的导热性能

IF 1.2 4区化学 Q4 CHEMISTRY, PHYSICAL

Physics and Chemistry of Liquids Pub Date : 2023-05-01 DOI:10.1080/00319104.2023.2207712

A. Agazhanov, R. Abdullaev, S. Stankus, A. Khairulin

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引用次数: 0

摘要

Pb含量分别为40,50,60和66.7 at时铯-铅系液态合金的导热性。%用激光闪光法在液相线至1173 K的温度范围内测量，误差为4-6%。结果表明，通过混合液态金属Cs和Pb得到的合金的导热系数下降了一个数量级，降至0.5-4.0 W/(m K)，具有熔盐的特征。结果表明，Cs-Pb系液态合金的导热系数浓度依赖性在等原子组成附近有一个广泛的最小值。对所得实验数据的分析表明，在等原子组成附近的液态Cs-Pb体系中形成了一个化学短程序，间接证实了这些熔体中存在Zintl配合物Cs4Pb4的观点。

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Thermal conductivity of the Cs-Pb system liquid alloys

ABSTRACT Thermal conductivity of liquid alloys of the caesium-lead system with a Pb content of 40, 50, 60, and 66.7 at. % is measured by the laser flash method in the temperature range from the liquidus line to 1173 K with an error of 4–6%. It is found that the thermal conductivity of the investigated alloys, obtained by mixing liquid metals Cs and Pb, drops by an order of magnitude to values: 0.5–4.0 W/(m K), characteristic of molten salts. It is shown that the thermal conductivity concentration dependence of the Cs-Pb system liquid alloys has a broad minimum near the equiatomic composition. An analysis of the obtained experimental data indicates the formation of a chemical short-range order in the liquid Cs-Pb system in the vicinity of the equiatomic composition, which indirectly confirms the existing ideas about the presence of Zintl complexes Cs4Pb4 in these melts.

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来源期刊

Physics and Chemistry of Liquids 化学-物理：凝聚态物理

CiteScore

3.30

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Physics and Chemistry of Liquids publishes experimental and theoretical papers, letters and reviews aimed at furthering the understanding of the liquid state. The coverage embraces the whole spectrum of liquids, from simple monatomic liquids and their mixtures, through charged liquids (e.g. ionic melts, liquid metals and their alloys, ions in aqueous solution, and metal-electrolyte systems) to molecular liquids of all kinds. It also covers quantum fluids and superfluids, such as Fermi and non-Fermi liquids, superconductors, Bose-Einstein condensates, correlated electron or spin assemblies. By publishing papers on physical aspects of the liquid state as well as those with a mainly chemical focus, Physics and Chemistry of Liquids provides a medium for the publication of interdisciplinary papers on liquids serving its broad international readership of physicists and chemists.