Effect of Heat Treatment on the Thermoelectric and Mechanical Properties of an n-Type Bi2Te2.5Se0.5 Solid Solution Prepared via Extrusion

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Inorganic Materials Pub Date : 2025-06-30 DOI:10.1134/S0020168525700268

V. A. Yur’ev, A. G. Chuiko, Yu. E. Kalinin, A. A. Grebennikov, M. A. Kashirin

{"title":"Effect of Heat Treatment on the Thermoelectric and Mechanical Properties of an n-Type Bi2Te2.5Se0.5 Solid Solution Prepared via Extrusion","authors":"V. A. Yur’ev, A. G. Chuiko, Yu. E. Kalinin, A. A. Grebennikov, M. A. Kashirin","doi":"10.1134/S0020168525700268","DOIUrl":null,"url":null,"abstract":"In this paper, we compare mechanical and thermoelectric parameters of Bi2Te2.5Se0.5 alloy prepared via zone recrystallization and extrusion. We have studied the effect of heat treatment on the ultimate strength and thermoelectric figure of merit of an n-type solid solution prepared via extrusion. Its thermoelectric parameters—Seebeck coefficient, electrical conductivity, and thermal conductivity—have been measured at room temperature and in the range 300–430 K, and its thermoelectric figure of merit ZT has been evaluated. The highest 350-K ZT value of the materials prepared via zone recrystallization is 1.0 ± 0.1, whereas the highest ZT value of the materials prepared via extrusion is 0.90 ± 0.1. Heat treatment in a vacuum thermostat at a temperature of 573 K for 24 h increased the highest ZT value of the materials prepared via extrusion to 0.96 ± 0.1 and their ultimate strength to 165 MPa.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 13","pages":"1405 - 1414"},"PeriodicalIF":0.7000,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S0020168525700268","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

In this paper, we compare mechanical and thermoelectric parameters of Bi₂Te_2.5Se_0.5 alloy prepared via zone recrystallization and extrusion. We have studied the effect of heat treatment on the ultimate strength and thermoelectric figure of merit of an n-type solid solution prepared via extrusion. Its thermoelectric parameters—Seebeck coefficient, electrical conductivity, and thermal conductivity—have been measured at room temperature and in the range 300–430 K, and its thermoelectric figure of merit ZT has been evaluated. The highest 350-K ZT value of the materials prepared via zone recrystallization is 1.0 ± 0.1, whereas the highest ZT value of the materials prepared via extrusion is 0.90 ± 0.1. Heat treatment in a vacuum thermostat at a temperature of 573 K for 24 h increased the highest ZT value of the materials prepared via extrusion to 0.96 ± 0.1 and their ultimate strength to 165 MPa.

Abstract Image

查看原文本刊更多论文

热处理对挤压法制备n型Bi2Te2.5Se0.5固溶体热电性能和力学性能的影响

本文比较了区域再结晶和挤压法制备的Bi2Te2.5Se0.5合金的力学和热电参数。研究了热处理对挤压法制备n型固溶体的极限强度和热电优值的影响。它的热电参数-塞贝克系数，电导率和导热系数-已在室温和300-430 K范围内测量，并对其热电性能ZT进行了评估。区域再结晶制备的材料350-K ZT值最高为1.0±0.1，挤压制备的材料350-K ZT值最高为0.90±0.1。在573 K真空恒温器中热处理24 h后，挤压制得的材料ZT最高可达0.96±0.1，极限强度可达165 MPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Inorganic Materials 工程技术-材料科学：综合

CiteScore

1.40

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.