Thermoelectric properties of quaternary Mg2Sn0.4Si0.6-xGex alloys

Hao Yin; Xin-Bing Zhao; Qian Zhang; Tie-Jun Zhu

doi:10.1016/S1674-4799(09)60097-2

Volume 16 Issue 5

Oct. 2009

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文章导航 > 矿物冶金与材料学报（英文版） > 2009 > 16(5) : 564-567. > DOI: 10.1016/S1674-4799(09)60097-2

Cite this article as:

Hao Yin, Xin-Bing Zhao, Qian Zhang, and Tie-Jun Zhu, Thermoelectric properties of quaternary Mg₂Sn_0.4Si_0.6-xGe_x alloys, Int. J. Miner. Metall. Mater., 16(2009), No. 5, pp.564-567. https://dx.doi.org/10.1016/S1674-4799(09)60097-2

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Materials

Thermoelectric properties of quaternary Mg₂Sn_0.4Si_0.6-xGe_x alloys

State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

基金项目:

This work was financially supported by the National Natural Science Foundation of China (No.50522203, 50731006) and the National Basic Research Program of China (No.2007CB607502).

通信作者:
Xin-Bing Zhao E-mail: zhaoxb@zju.edu.cn

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中文摘要

Quaternary alloys Mg₂Sn_0.4Si_0.6-xGe_x (x=0, 0.02, 0.05, 0.08 0.1, and 0.2) were prepared using induction melting followed by hot-pressing. Relative densities of the sintered samples were over 97% of the theoretical values. Multiple phases were detected in the samples. It was found that the Seebeck coefficient was sensitive to the content of Mg₂Ge and a maximum value of about 350 μV-K^-1 was obtained. The introduction of Ge increases the electrical conductivity and the thermal conductivity simultaneously. The mechanism of this phenomenon was discussed. A maximum dimensionless figure of merit, ZT, of about 0.28 was obtained for Mg₂Sn_0.4Si_0.55Ge_0.05 at 550 K.

关键词:

Materials

Thermoelectric properties of quaternary Mg₂Sn_0.4Si_0.6-xGe_x alloys

Author Affilications

State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Funds:
This work was financially supported by the National Natural Science Foundation of China (No.50522203, 50731006) and the National Basic Research Program of China (No.2007CB607502).
Received: 07 October 2008;

Abstract:

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