| 热电材料Bi_2Te_3粉体的制备及粒径分析 |
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| 引用本文： | 章园,严振升,乐松.热电材料Bi_2Te_3粉体的制备及粒径分析[J].中国粉体技术,2012,18(2):40-42. |
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| 作者姓名： | 章园 严振升 乐松 |
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| 作者单位： | 暨南大学物理系,广东广州,510632 |
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| 摘 要： | 为了确定经机械合金化法制备的Bi2Te3粉体进行激光粒度分析的适宜条件,运用X射线粉末衍射、激光粒度分析、比表面积分析等手段对样品物相和粒径进行分析。结果表明,高能球磨30 h后,Bi2Te3晶粒的平均粒径达到本实验中的最小值135 nm;当分散剂采用Tween-80,体积分数为1%;粉体质量浓度为0.01 g/mL时,对样品进行激光粒度分析的结果较为理想。
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| 关 键 词： | 热电材料 机械合金化 粒径分析 |
Preparation and Particle Size Analysis of Thermalelectrical Material Bi2Te3 Powders |
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| ZHANG Yuan
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YAN Zhensheng
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YUE Song.Preparation and Particle Size Analysis of Thermalelectrical Material Bi2Te3 Powders[J].China Powder Science and Technology,2012,18(2):40-42. |
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| Authors: | ZHANG Yuan YAN Zhensheng YUE Song |
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| Affiliation: | (Department of Physics,Jinan University,Guangzhou 510632,China) |
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| Abstract: | In order to determine the appropriate dispersing conditions for laser particle size analysis of Bi2Te3 powders synthesized by mechanical alloying method,the as-prepared Bi2Te3 powders were characterized by X ray powder diffraction,laser particle size analyzer and specific surface area analyzer.After 30 h mechanical alloying,the average grain size of Bi2Te3 powders reaches the minimum value of 135 nm,and dispersing agent Tween-80 in volume fraction of 1% with particle concentration 0.01 g/mL are proved suitable for particle size analyzing. |
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| Keywords: | thermoelectric material mechanical alloying particle size analysis |
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