Precipitation Behavior and Magnetic Properties of Nano–Scale Particles in a Cu–Fe–Ni Alloy
Precipitation Behavior and Magnetic Properties of Nano–Scale Particles in a Cu–Fe–Ni Alloy
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Cu-Fe-Ni 合金中纳米颗粒的析出行为和磁性能
DOI：
10.4028/www.scientific.net/msf.654-656.2342
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Takeguchi
中科院分区：
文献类型：
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作者：
Sung Kang;M. Takeda;Z. Hiroi;M. Takeguchi
利用透射电镜（TEM）研究了Cu-Fe-Ni合金在873 K和1073 K等温退火过程中纳米磁性颗粒的析出行为。由于合金中的相分解，纳米级磁性颗粒在富Cu基体中随机形成。随着等温退火时间的增加，在873 K和1073 K等温退火时，观察到两个或两个以上的立方纳米颗粒和针状沉淀物沿着方向线性排列的显著特征<100>。为了研究Cu-Fe-Ni合金中析出相的微观结构与磁性能之间的关系，还利用超导量子干涉仪（SQUID）进行了研究。本研究揭示了该合金在沉淀过程中对磁性能的几个重要影响。
The precipitation behavior of nano–scale magnetic particles formed in a Cu–Fe–Ni alloy on isothermal annealing at 873K and 1073K have been investigated by means of transmission electron microscopy (TEM). Nano–scale magnetic particles were formed randomly in the Cu–rich matrix after receiving a short annealing due to phase decomposition in the alloy. With increasing the isothermal annealing time, however, the striking features that two or more nano–scale particles with a cubic shape and precipitates with a needle shape were aligned linearly along <100> directions were observed on isothermal annealing at 873K and 1073K, respectively. To investigate the relationship between microstructures and magnetic properties of precipitates in a Cu–Fe–Ni alloy were also carried out the superconducting quantum interference device (SQUID) magnetometer. The present study revealed that several significant influences to magnetic properties were induced during the precipitation process in this alloy.