| Thermoelectric Properties of Mg2Si1-xSnx Synthesized by Bulk Mechanical Alloying |
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| 作者姓名： | SONG Ren-bo LIU Ya-zheng Tatsuhiko AIZAWA |
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| 作者单位： | [1]School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China [2]Jayram Office, University of Toronto, Shanghai International Building 6F, 1-24-12 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan |
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| 基金项目： | National Natural Science Foundation of China （50504002） |
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| 摘 要： | Bulk mechanical alloying （BMA） has been successfully applied to solid-state synthesis of p-type and n-type thermoelectric materials Mg2Si1-xSnx （x = 0, 0.2, 0.4, 0.6, 0.8, 1） from element-powders at the room temperature in a relatively short time. The electrical conductivity, the Seebeck coefficient and the thermal conductivity of the Mg2Si1-xSnx are quite sensitive to the x-content. With the x-content rising, the electrical conductivity increases. When x = 0.6, it reaches the lowest and Mg2Si shows an n-type of semi-conducting However, when x = 0.2 and T 〉525 K, the Seebeck coefficient of the samples will change the opposite way. While x≥0.4, the samples present a p-type of semi-conducting. The figure of merit, Z of Mg2Si1-xSnx will be obtained in the range from 300 K to 700 K. When x = 0.6, Z proves to be higher than that of other samples at 300 K≤ T≤650 K.
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| 关 键 词： | Mg2Si1-xSnx 块状机械合金化 合成 热电性质 固态合成 |
| 收稿时间： | 2006-08-10 |
| 修稿时间： | 2006-11-06 |
Thermoelectric Properties of Mg2Si1-xSnx Synthesized by Bulk Mechanical Alloying |
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| SONG Ren-bo LIU Ya-zheng Tatsuhiko AIZAWA.Thermoelectric Properties of Mg2Si1-xSnx Synthesized by Bulk Mechanical Alloying[J].Chinese Journal of Aeronautics,2006,19(B12):134-138. |
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| Abstract: | |
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| Keywords: | solid-state synthesis thermoelectric bulk mechanical alloying Mg2Si1-xSnx |
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