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首页> 外文期刊>Journal of magnetism and magnetic materials >Simultaneous variations of microstructure and magnetic properties of Ni_(58)Fe_(12)Zr_(20)B_(10) nanostructure/amorphous alloy prepared by mechanical alloying
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Simultaneous variations of microstructure and magnetic properties of Ni_(58)Fe_(12)Zr_(20)B_(10) nanostructure/amorphous alloy prepared by mechanical alloying

机译：机械合金化制备的Ni_（58）Fe_（12）Zr_（20）B_（10）纳米结构/非晶合金的微观结构和磁性能的同时变化

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摘要

This study aims to evaluate magnetic and micro-structural properties of amorphousanocrystalline mechanically alloyed Ni_(58)Fe_(12)Zr_(20)B_(10) powders with ball-milling time up to 190 h. Structural, micro-structural and thermal evaluations of the milled powders were carried out by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and differential scanning calorimetry (DSC) methods. Magnetic properties were also measured by a vibrating sample magnetometer (VSM) instrument. Results showed that the amorphous phase reached maximum value of 95% and the crystallite size was about 3 nm at the end of the milling. Magnetization saturation (M_s) decreased slightly and coercivity (H_c) reached to the highest value at 72 h of the milling time. At the 190 h of milling, the coercivity and saturation magnetization reached 18 Oe and 20 emu/g, respectively. While, after an appropriate amount of heat treatment, these two variables became approximately 2 Oe and 32 emu/g.
机译：这项研究旨在评估球磨时间不超过190 h的非晶/纳米晶机械合金化Ni_（58）Fe_（12）Zr_（20）B_（10）粉末的磁性和微观结构性能。通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和差示扫描量热法（DSC）方法对研磨后的粉末进行结构，微观结构和热学评估。还通过振动样品磁力计（VSM）仪器测量了磁性。结果显示，在研磨结束时，非晶相达到最大值95％，微晶尺寸约为3 nm。在铣削时间的72小时内，磁化饱和度（M_s）略有下降，矫顽力（H_c）达到最大值。在研磨的190小时内，矫顽力和饱和磁化强度分别达到18 Oe和20 emu / g。而在经过适当的热处理之后，这两个变量变为大约2 Oe和32 emu / g。

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