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首页> 外文期刊>Physica, B. Condensed Matter >Effects of process parameters on electrical properties of n-type Bi2Te3 prepared by mechanical alloying and spark plasma sintering
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Effects of process parameters on electrical properties of n-type Bi2Te3 prepared by mechanical alloying and spark plasma sintering

机译：工艺参数对机械合金化和火花等离子体烧结制备n型Bi2Te3电性能的影响

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摘要

n-Type Bi2Te3 thermoelectric materials were prepared by spark plasma sintering (SPS) using mechanically alloyed powders. Seebeck coefficient and electrical conductivity of the resultant materials were measured, with emphasis on the effects of sintering process parameters on the electrical properties. The power factor was improved from 1.5 to 1.6mW/mK(2) when the SPS pressure was increased from 20 to 50 MPa at 623 K, and was further increased to 2.1 mW/mK(2) under 50 MPa by raising the SPS temperature from 623 to 673 K. The maximum power factor was obtained for the sample sintered under optimized SPS process parameters, in which the sintering temperature and the sintering pressure are 673 K and 50 MPa, respectively. (C) 2007 Elsevier B.V. All rights reserved.
机译：使用机械合金化粉末通过火花等离子体烧结（SPS）制备n型Bi2Te3热电材料。测量所得材料的塞贝克系数和电导率，重点是烧结工艺参数对电性能的影响。当SPS压力在623 K下从20 MPa增加到50 MPa时，功率因数从1.5提高到1.6mW / mK（2），在50 MPa下通过提高SPS温度将功率因数进一步提高到2.1 mW / mK（2）从623到673K。获得了在最佳SPS工艺参数下烧结的样品的最大功率因数，其中烧结温度和烧结压力分别为673 K和50 MPa。 （C）2007 Elsevier B.V.保留所有权利。

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