Influence of Temperature During Spark Plasma Sintering Compaction of Melt-Spun p-Bi0.5Sb1.5Te3
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- 作者：A. A. Melnikov ; N. Yu. Tabachkova ; S. A. Kichik…
- 关键词：Thermoelectricity ; melt spinning ; melt ; spun powders ; bismuth antimony telluride ; spark plasma sintering
- 刊名：Journal of Electronic Materials
- 出版年：2015
- 出版时间：June 2015
- 年：2015
- 卷：44
- 期：6
- 页码：1517-1523
- 全文大小：2,596 KB
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N. Yu. Tabachkova (1)
S. A. Kichik (2)
I. S. Marakushev (2)
A. N. Koryakin (2)
V. F. Ponomarev (2)
1. National University of Science and Technology “MISIS- 4, Leninskiy Pr., 119049, Moscow, Russia
2. Crystal Ltd., 45B, Stantsionnaya Str., 141060, Korolev, Russia - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Optical and Electronic Materials
Characterization and Evaluation Materials
Electronics, Microelectronics and Instrumentation
Solid State Physics and Spectroscopy - 出版者：Springer Boston
- ISSN：1543-186X
文摘
The melt spinning technique is a process for obtaining materials based on ultrafast cooling and solidification of a melt in contact with a liquid-cooled rotating wheel. In this work, p-Bi0.5Sb1.5Te3 powders were obtained and compacted by spark plasma sintering at various temperature conditions, and the changes in their structural and dimensional characteristics were investigated. It is shown that the sintering temperature conditions significantly affect the structure of the material, causing active recrystallization processes even at short sintering times (5?min to 10?min). Material obtained in this work has slight preferential orientation of (0?0?1) planes perpendicular to the pressure axis, which disappears with increasing sintering time. Power factor values for all samples were greater for current direction perpendicular to the pressure axis, which corresponds to compacted nonspun material. It is shown that annealing in vacuum negatively affects the material, reducing the power factor for all current directions.