NDLI: Improved Thermoelectric Performance and Mechanical Properties of Nanostructured Melt-Spun β-Zn$_{4}$Sb$

Content Provider	Springer Nature Link
Author	Qi, Dekui Tang, Xinfeng Li, Han Yan, Yonggao Zhang, Qingjie
Copyright Year	2010
Abstract	β-Zn$_{4}$Sb$_{3}$ is one of the most important thermoelectric materials in the intermediate temperature range, but poor mechanical properties limit its commercial application. In this work we adopted a melt-spinning (MS) technique followed by a quick spark plasma sintering (SPS) procedure to fabricate nanostructured β-Zn$_{4}$Sb$_{3}$ bulk material with good thermoelectric performance and mechanical properties. The nanostructure had a significant influence on the thermoelectric transport properties and mechanical strength. Compared with the sample prepared by the traditional melting method (M-ingot), the Seebeck coefficient of the MS-SPS samples was significantly higher and the thermal conductivity was remarkably lower. In spite of the lower electrical conductivity, the σ/κ ratio increased in the high temperature range, leading to great improvement in the thermoelectric figure of merit (ZT). The maximum ZT value of 1.16 was obtained at 700 K for the MS-SPS-40 sample. Compared with the M-ingot sample, it was 47% higher at the same temperature. Moreover, the average compressive strength of the MS-SPS-40 sample reached 337.9 MPa, which is 130% higher than that of the M-ingot sample. β-Zn$_{4}$Sb$_{3}$ with such high mechanical strength has great potential for commercial application.
Starting Page	1159
Ending Page	1165
Page Count	7
File Format	PDF
ISSN	03615235
Journal	Journal of Electronic Materials
Volume Number	39
Issue Number	8
e-ISSN	1543186X
Language	English
Publisher	Springer US
Publisher Date	2010-06-08
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	β-Zn$_{4}$Sb$_{3}$ melt-spinning thermoelectric mechanical properties Solid State Physics Electronics and Microelectronics, Instrumentation Characterization and Evaluation of Materials Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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