期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 360, 期 -, 页码 104-108出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2014.02.019
关键词
FeCo microstructures; Borohydride reduction; Magnetorheological fluid; Steady shear
资金
- CSIR, India for the award of a Senior Research Fellowship
Cubic and spherical FeRsCo(45) alloyed microstructures were synthesized by borohydride reduction from aqueous solutions of metallic precursors, using stabilizers and polymer. Monosodium citrate, sodium acetate and PEG 6000 were utilized as electrostatic stabilizers and polymeric surface modifier. Suitable reaction conditions were maintained for synthesis of predominantly larger particles (0.7 pm to 12 pm), that facilitates use in magnetorheological fluids. Surface morphological studies by scanning electron microscopy revealed well shaped cubic and spherical geometry for the citrate and polymer-stabilized Fe55Co45 alloys, while the alloy compositions remained nearly the same for both. X-ray diffractions of the as-prepared and annealed samples under various temperatures showed high degree of crystallinity with increasing temperatures. Studies of D.C. magnetization of the systems reveal that the particles have a core-shell structure, with inner magnetic core having a diameter around 30 nm with a log-normal distribution. Magnetorheological studies were performed with 8 vol% suspensions of as-synthesized particles dispersed in silicone oil (viscosity 30 mPa s at 25 degrees C) under different magnetic fields. Detailed studies of the magnetorheological properties were studied on these systems for practical use (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据