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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 338 - 342 (5page)
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In the present work, we investigated the mechanical alloying of binary Ga-Se(1:1) and Ga-Te(1;1) sysyems.
The high-energy ball-milling was performed at 40oC where one of constituents (Ga) is molten state. The purpose of thework was to see whether reactions between constituent elements are accelerated by the presence of a liquid phase. Duringthe ball-milling, the liquid Ga phase completely disappeared and the resulting powders consist of nanocrystallinegrain of ~20 nm with partly amorphized phases. However, no intermetallic compounds formed in spite of the presenceof the liquid phases which has much higher diffusivity than solid constituents. By subsequent heat-treatments, the intermetalliccompounds such as GaSe and GaTe formed at relatively low temperatures. The formation temperature of thesescompound was much lower than those predicted by equilibrium phase diagram. The comparison of the ball-milled powderswith un-milled ones indicated that the easy formation of intermetallic compound or allying occurs at low temperatures.
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