Cs-Pb系液态合金的导热性能

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research 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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.