期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 438, 期 -, 页码 144-151出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2017.04.080
关键词
Nanostructured materials; Mechanical alloying; X-ray diffraction; Magnetic measurements
资金
- Persian Gulf University [1107241]
In this research work, structural and magnetic evolution of Co57Fe13Nb8Ta4B18 alloy, during mechanical alloying process, have been investigated by using, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, electron dispersive X-ray spectroscopy, differential thermal analysis and also vibrating sample magnetometer. It is observed that at 120 milling time, the crystallite size reaches to about 7.8 nm. Structural analyses show that, the solid solution of the initial powder mixture occurs at 160 h milling time. The coercivity behavior demonstrates a rise, up to 70 h followed by decreasing tendency up to final stage of milling process. Thermal analysis of 160 h milling time sample reveals two endothermic peaks. The characterization of annealed milled sample for 160 h milling time at 427 degrees C shows crystallite size growth accompanied by increasing in saturation magnetization. (C) 2017 Elsevier B.V. All rights reserved.
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