秦丙克,籍永华,宿太超,白志玲,黄润,张金柱.FeTe<sub>2</sub>化合物快速制备及电学输运性能研究[J].稀有金属材料与工程,2019,47(3):931~935.[Qin Bingke,Ji Yonghua,Su Taichao,Bai Zhiling,Huang Run,Zhang Jinzhu.Rapid preparation and electrical transport properties of compound FeTe<sub>2</sub>[J].Rare Metal Materials and Engineering,2019,47(3):931~935.]
FeTe<sub>2</sub>化合物快速制备及电学输运性能研究
投稿时间:2018-05-25  修订日期:2018-09-06
中文关键词:  热电材料  FeTe<  sub>  2<  /sub>    微观形貌  电学性质
基金项目:贵州省教育厅(黔教合KY字[2016]102号);国家自然基金(51764005)。
中文摘要:
      利用真空高温烧结的方法,在803K~923K的温度范围内快速合成了单相的合金化合物FeTe<sub>2</sub>。在制备温度为863.15K时,考查了不同保温时间对制备单相样品FeTe<sub>2</sub>的影响规律。制备出的样品进行了XRD和SEM分析,并在室温下对样品进行了电阻率和Seebeck系数的测试分析。研究结果表明:在温度803K~923K的温度范围内,采用高温烧结反应能够快速制备出单相的多晶体化合物FeTe<sub>2</sub>;制备出的样品内部均匀存在许多微米级孔洞。经室温电学性质测试,样品在制备温度为863.15K保温时间60min时获得最大Seebeck系数88.21μV/k。当制备温度为803.15K保温时间30min时,获得最小电阻率为7.86 mΩ.cm。样品在制备温度923.15K保温30min时,获得最大功率因子53.82 μW/(m.k<sub>2</sub>)。
Rapid preparation and electrical transport properties of compound FeTe&lt;sub&gt;2&lt;/sub&gt;
英文关键词:Thermoelectric materials  FeTe2  Microstructure  Electrical properties
英文摘要:
      Single-phase alloy compound FeTe<sub>2</sub> was rapidly synthesized by vacuum high temperature sintering in the temperature range of 803K~923K. At the preparation temperature of 863.15K, the effect of different holding time on the preparation of single phase FeTe<sub>2</sub> was examined. The crystallographic properties and microstructure were characterized by X-ray diffraction and electron probe microanalysis separately. Seebeck coefficient and electrical resistivity were measured at room temperature. The results show that the single-phase polycrystalline compound FeTe<sub>2</sub> can be rapidly prepared by high-temperature sintering reaction. There are many micron-sized pores evenly inside the sample. The transport properties were measured at room temperature. The maximum Seebeck coefficient was 88.21 88.21μV/k at preparation temperature of 863.15K and holding time of 60 min. When the preparation temperature was 803.15K and the holding time was 30min, the minimum resistivity was 7.86 mΩ.cm. The maximum power factor 53.82 μW/(m.k<sub>2</sub>) was obtained when the sample was prepared at 923.15K temperature for 30min.
作者单位E-mail
秦丙克 贵州大学材料与冶金学院 qinbingke@126.com 
籍永华 六盘水师范学院  
宿太超 河南理工大学材料科学与工程学院  
白志玲 六盘水师范学院  
黄润 贵州大学材料与冶金学院  
张金柱 贵州大学材料与冶金学院  
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