自蔓延高温合成Al(1 - x)MnSi（1+x）合金的热电性能

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI:10.3103/S1061386224700444

A. O. Sivakova, A. V. Karpov, P. A. Lazarev, A. E. Sytschev

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引用次数: 0

摘要

采用自蔓延高温合成方法制备了由Al(1 - x)MnSi(1+x) （Al2.5Mn3.0Si3.5和Al0.75Mn1.0Si1.25）、Mn3Al、MnSi和未反应Si组成的热电合金。合金的显微组织呈多孔状，主要为尺寸为15 ~ 60 μm的Al(1 - x)MnSi（1+x）晶粒。研究了合成材料的热电特性。结果表明，该材料的塞贝克系数在室温下为-29 μV/K，在800 K时达到-8 μV/K。室温下观察到的最大比电阻为9.5 Ω cm。

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Thermoelectric Properties of Al(1–x)MnSi(1+x) Alloy Prepared by Self-Propagating High-Temperature Synthesis

The thermoelectric alloy consisting of Al_(1–x)MnSi_(1+x) (Al_2.5Mn_3.0Si_3.5 and Al_0.75Mn_1.0Si_1.25), Mn₃Al, MnSi, and unreacted Si was prepared via self-propagating high-temperature synthesis. The microstructure of the alloy was shown to be porous and mainly represented by coarse Al_(1–x)MnSi_(1+x) grains (15–60 μm in size). Thermoelectric characteristics of synthesized material were studied. It was found that the Seebeck coefficient is –29 μV/K at room temperature and reaches –8 μV/K at 800 K. The maximum specific electrical resistance of 9.5 Ω cm was observed at room temperature.

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.