Thermoelectric properties of FeVSb half-Heusler compounds by levitation melting and spark plasma sintering

被引：66

作者：

Fu, Chenguang ^{[1
]}

Xie, Hanhui ^{[1
]}

Liu, Yintu ^{[1
]}

Zhu, T. J. ^{[1
,2
]}

Xie, Jian ^{[1
]}

Zhao, X. B. ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Cyrus Tang Ctr Sensor Mat & Applicat, Hangzhou 310027, Peoples R China

来源：

INTERMETALLICS | 2013年 / 32卷

关键词：

Thermoelectric properties; Thermoelectric power generation; ELECTRICAL-TRANSPORT PROPERTIES; POROSITY; PHASES; PURE;

D O I：

10.1016/j.intermet.2012.07.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Half-Heusler compound FeVSb has been successfully synthesized by levitation melting followed by spark plasma sintering and annealing process. The phase transformation of FeVSb in the fabricating process has been studied, and pure FeVSb half-Heusler phase was obtained. Thermoelectric properties of pure FeVSb with different relative densities have been investigated, and the porosity dependence of thermal conductivity of FeVSb at 300 K follows Maxwell-Eucken equation well. A maximum power factor of 48 x 10(-4) W m(-1) K-2 was obtained at 350 K from the sample with the highest relative density of 97%. A state-of-the-art ZT value of similar to 0.25 has been attained at 550 K for pure FeVSb, which is one of the highest reported ZT value for FeVSb half-Heusler compound. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：39 / 43

页数：5

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