期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 494, 期 1-2, 页码 109-115出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.01.013
关键词
Nanocrystalline materials; Mechanical alloying; X-ray diffraction; Magnetization; Microstructure; Scanning electron microscopy
Nanocrystalline Fe75Si15B10 powders were obtained by mechanical alloying in a high energy planetary ball mill. Morphological, microstructural, structural and magnetic property changes during the milling process were followed by scanning electron microscopy. X-ray diffraction and magnetic measurements. The crystallite size reduction to the nanometer scale (6-13 nm) is accompanied by an increase in atomic level strain. The Fe2B boride phase is formed after 5 h of milling. The dissolution of B and Si into the Fe lattice leads to the formation of bcc alpha-Fe(Si,B) solid solution. On prolonged milling time, a mixture of highly disordered alpha-Fe(Si,B) solid solution and Fe2B boride is obtained. The coercivity and magnetization values are 55 Oe and 6.7 emu/g, respectively, after 150 h of milling. (c) 2010 Elsevier B.V. All rights reserved.
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