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- P형 Fe(Mn)Si2 열전재료 분말의 성형 및 미세조직
- 심재식, 홍순직, 천병선
- Consolidation of p-type Fe(Mn)Si2 Thermoelectric Powder and Microstructure
- J.S. Shim, S.J. Hong, B.S. Chun
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Journal of Korean Powder Metallurgy Institute 2008;15(5):345-351
DOI: https://doi.org/10.4150/KPMI.2008.15.5.345
1충남대학교 나노 소재 공학과
2공주대학교 신소재 공학부
3충남대학교 나노 소재 공학과
1Department of Nano Materials Science and Engineering, Chungnam National University
2Division of Advanced Materials Engineering, Kongju National University
3Department of Nano Materials Science and Engineering, Chungnam National University
2공주대학교 신소재 공학부
3충남대학교 나노 소재 공학과
1Department of Nano Materials Science and Engineering, Chungnam National University
2Division of Advanced Materials Engineering, Kongju National University
3Department of Nano Materials Science and Engineering, Chungnam National University
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Abstract
The effects of the dopant (Mn) ratio on the microstructure and thermoelectric properties of FeSi_2 alloy were studied in this research. The alloy was fabricated by a combination process of ball milling and high pressure pressing. Structural behavior of the sintered bulks were systematically investigated by XRD, SEM, and optical microscopy. With increasing dopan (Mn) ratio, the density and varepsilon-FeSi phase of the sintered bulks increased and maximum density of 94% was obtained in the 0.07% Mn-doped alloy. The sintered bulks showed fine microstructure of alpha-Fe_2Si_5, varepsilon-FeSi and beta-FeSi_2 phase. The semiconducting phase of beta-FeSi_2 was transformed from alpha-Fe_2Si_5+varepsilon-FeSi phase by annealing.
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