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杜正良,宋志亮,卢裕夫,何彤彤,崔教林.四元Mg2Si0.27Ge0.05Sn0.65Sb0.03固溶体的热电性能[J].稀有金属材料与工程(英文),2018,47(1):89~92.[Du Zhengliang,Song Zhiliang,Lu Yufu,He Tongtong and Cui Jiaolin.Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions[J].Rare Metal Materials and Engineering,2018,47(1):89~92.]
Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions
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Received:January 18, 2016  Revised:March 15, 2016
DOI:
Key words: Magnesium silicides  Thermoelectric properties  Thermoelectric materials  Quaternary solid solution
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Du Zhengliang,Song Zhiliang,Lu Yufu,He Tongtong and Cui Jiaolin  
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Abstract:
      Single–phased Mg2(1+x)Si0.27Ge0.05Sn0.65Sb0.03 (x = 0.05, 0.08) quaternary solid solutions were prepared by B2O3 flux method followed by spark plasma sintering (SPS). The electrical conductivity, Seebeck coefficient and thermal conductivity were measured from 300 K to 800 K. The results show that the electrical conductivity increases while the Seebeck coefficient decreases with temperature for these samples. The lattice thermal conductivities of all the samples are higher than the calculated value using the Abele model. A maximum ZT of 1.0 at 800 K was obtained in the sample with x = 0.08.