Bi₂Te₃和Bi_0.5Sb_1.5Te₃的机械合金化法制备及其热电性能

来源期刊：中国有色金属学报2000年第z1期

论文作者：胡淑红 赵新兵 朱铁军 邬震泰 周邦昌

文章页码：73 - 76

关键词：机械合金化； 热电材料； Bi₂Te₃； Bi_0.5Sb_1.5Te₃； 热电性能

Key words：mechanical alloying； thermoelectric material； Bi₂Te₃； Bi_0.5Sb_1.5Te₃； thermoelectric properties

摘    要：用机械合金法制备了Bi₂Te₃和Bi_0.5Sb_1.5Te₃两种热电材料。XRD分析表明两种材料分别在球磨175h和315h后完全合金化。机械合金化合金粉末冷压后在不同温度烧结并测量了热电性能 ,其中Bi_0.5Sb_1.5Te₃材料480℃烧结样的最高Seebeck系数约为2 00 μV/K。

Abstract: Bi₂Te₃ and Bi₀.5Sb₁.5Te₃ thermoelectric materials were prepared by mechanical alloying. The alloying formation was analyzed by XRD. It was found that Bi₂Te₃ and Bi₀.5Sb₁.5Te₃ alloys were synthesized after milled for 175 and 315 h, respectively. Alloying powders were cold pressed and sintered at different temperatures. The thermoelectric properties of the sintered samples were measured. The maximum Seebeck coefficient of Bi₀.5Sb₁.5Te₃ samples sintered at 480 ℃ was found to be about 200 μV/K.