Synthesis and Characterization of High-Energy Ball-Milled Nanostructured Fe25Se75

被引：5
|
作者：
Chebli, A. [1 ]
Djekoun, A. [1 ]
Boudinar, N. [1 ]
Benabdeslem, M. [1 ]
Bouzabata, B. [1 ]
Otmani, A. [2 ]
Sunol, J. J. [3 ]
机构：
[1] Univ Annaba, Fac Sci, Dept Phys, Lab Magnetisme & Spectroscopie Solides, Sidi Amar 23200, Algeria
[2] Univ 20 Aout 1955, Lab Phys Chim Surfaces & Interfaces, Skikda 21000, Algeria
[3] Univ Girona, Dept Fis, Girona 17071, Spain
来源：
JOM | 2016年 / 68卷 / 01期
关键词：
SE SYSTEM; FESE; DISELENIDE; TRANSFORMATION; SELENIZATION; KINETICS; GROWTH;
D O I：
10.1007/s11837-015-1682-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Iron Selenide (Fe25Se75) powders have been synthesized by mechanical alloying from pure elemental Fe and Se powders in a high-energy planetary ball mill. Morphological, compositional, structural and thermal changes during milling have been analyzed by scanning electron microscopy coupled to energy dispersive x-ray analysis, x-ray diffraction (XRD) and differential scanning calorimetry (DSC). With milling time up to 6 h, combined XRD patterns and DSC show alpha-Fe as well as some amorphous selenium. For the samples milled between 10 h and 20 h, the orthorhombic FeSe2 and beta-FeSe hexagonal nanometric phases are formed and the volume fraction of the alpha-Fe phase decreases. As for 33 h and 52 h of milling, the alpha-Fe phase completely disappears and a new phase emerges, also in nanometric scale, typical of Fe7Se8 phase.
引用
收藏
页码：351 / 361
页数：11
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