The preparation of well-dispersed Ni–B amorphous alloy nanoparticles at room temperature
The preparation of well-dispersed Ni–B amorphous alloy nanoparticles at room temperature
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DOI：
10.1016/j.jallcom.2007.07.074
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发表时间：
2008-05
影响因子：
6.2
通讯作者：
M. Wen;Lujiang Li;Qiuyan Liu;Haiquan Qi;Tao Zhang
中科院分区：
文献类型：
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作者：
M. Wen;Lujiang Li;Qiuyan Liu;Haiquan Qi;Tao Zhang
在正极微乳液体系中，采用常温化学溶液合金化法制备了空气稳定、分散性良好的Ni-B非晶态合金纳米粒子，其尺寸相近，尺寸约为5 nm，偏差较小。利用X射线衍射仪、能谱仪、透射电子显微镜、红外光谱、差示扫描量热仪和振动样品磁强计等测试手段对Ni-B非晶态合金纳米粒子的界面反应机理、元素分析、热稳定性和磁性进行了表征。结果表明，所合成的Ni-B非晶态合金纳米粒子在室温下是空气稳定的，并且包覆了大分子化合物油酸。在此基础上对合成的Ni-B非晶态合金的磁性进行了讨论。
The air-stable well-dispersed Ni–B amorphous alloy nanoparticles in the similar size of 5nm with narrow deviation were prepared by a chemical solution alloying process at room temperature in a positive microemulsion system. The proposed interface reaction mechanism, element analysis and thermal stability as well as the magnetic behavior of Ni–B amorphous alloy nanoparticles were characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), infrared spectroscopy (IR), differential scanning calorimetry (DSC) and vibrating sample magnetometer (VSM). All the results showed that as synthesized Ni–B amorphous alloy nanoparticles are air-stable in room temperature and coated by macromolecular compound oleic acid. The magnetic property of the as synthesized Ni–B amorphous alloy was discussed based on the obtained results.