| 학회 |
한국재료학회 |
| 학술대회 |
2012년 봄 (05/17 ~ 05/18, 무주덕유산리조트) |
| 권호 |
18권 1호 |
| 발표분야 |
A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 |
Thermoelectric Properties of Higher Manganese Silicide(HMS) Synthesized by Mechanical Alloying and Consolidated by Vacuum Hot Pressing Process |
| 초록 |
Recent search for thermoelectric materials discovered a new class of intermetallics, manganese silicides, as good candidates for higher performance thermoelectric conversion. Higher manganese silicide were synthesized by the mechanical alloying of stoichiometric elemental powder compositions. As-milled powders were obtained by mechanical alloying for 24 hours. They were fully consolidated by hot pressing at 1123 K with a stress of 70 MPa for 2 hours in vacuum. Phase transformation during mechanical alloying and hot consolidation were investigated using XRD and microstructures were investigated using SEM. HMS phases were successfully produced in this process. Electronic transport properties(Hall coefficient, carrier concentration and mobility) and thermoelectric properties (Seebeck coefficient, electrical conductivity, thermal conductivity and dimensionless figure-of-merit) were examined. Mechanical alloyed MnSi1.73, appeared to have a potential as a thermoelectric material in this study. |
| 저자 |
Moon-Kwan Choi1, Jin-Hee Kim2, Hyun-Kyung Choi3, Man-soon Yoon2, Young-Geun Lee3, Il-Ho Kim2, Soon-Chul Ur3
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| 소속 |
1Korea Institute of Limestone and Advanced Materials(KILAM), 2Department of Materials Science and Engineering, 3Korea National Univ. of Transportation |
| 키워드 |
Thermoelectric; Higher Manganese Silicide; MnSi1.73; Mechanical alloying; vacuum hot press
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| E-Mail |
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