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,2018,47(1):89~92.[Du Zhengliang,Song Zhiliang,Lu Yufu,He Tongtong,Cui Jiaolin.Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions[J].Rare Metal Materials and Engineering,2018,47(1):89~92.]
四元Mg2Si0.27Ge0.05Sn0.65Sb0.03固溶体的热电性能
投稿时间:2016-01-18  修订日期:2016-03-15
中文关键词:  硅化镁  热电性能  热电材料  四元固溶体
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      通过氧化硼助熔剂法和放电等离子烧结技术制备了Mg2(1+x)Si0.27Ge0.05Sn0.65Sb0.03 (x = 0.05, 0.08)四元固溶体热电材料。测量了在300 K - 800 K 的温度区间内测试了所有四元固溶体试样的塞贝克系数、电导率和热导率。研究结果表明随着温度的升高电导率单调降低而塞贝克系数单调升高,所有样品的晶格热导率明显高于通过Abeles模型计算所得到的理论值。最高无量纲热电优值出现在x=0.08样品中,在800 K时达到最高值1.0.
Thermoelectric performance of quaternary Mg2Si0.27Ge0.05Sn0.65Sb0.03 solid solutions
英文关键词:Magnesium silicides  Thermoelectric properties  Thermoelectric materials  Quaternary solid solution
英文摘要:
      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.
作者单位E-mail
杜正良 宁波工程学院材料学院 duzhengliang@126.com 
宋志亮 太原理工大学  
卢裕夫 太原理工大学  
何彤彤 太原理工大学  
崔教林 宁波工程学院 cuijiaolin@163.com 
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