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Saturation Magnetization Studies on Iron-Nickel Ball Milling Nanopowders and Spark Plasma Sintered Specimens
Journal of Magnetism and Magnetic Materials ( IF 2.7 ) Pub Date : 2018-11-01 , DOI: 10.1016/j.jmmm.2018.06.008
T. Ashokkumar , A. Rajadurai , Gouthama , Subash C.B. Gopinath

Abstract Saturation Magnetization (Ms) is one of the important states among all magnetic properties, it decides that the materials can be either used as a hard or soft magnet. Mechanical alloyed and spark plasma sintered at the promising levels of 40, 50 and 75 wt% Ni-Fe have been investigated to find out the Ms with the effect of the composition, grain size, particle size and extent of alloying. This study revealed that the value of Ms is increased due to the formation of a Ni3Fe compound, and it depends on the grain size. The introduction of the Ni3Fe compound was confirmed by X-ray diffraction analysis. It was found that ambient temperature played a critical role in sintering Ni-Fe alloy. The value of the Ms is found to be high at the intermediate particle size and become lower when the particle size is either larger or smaller. From this study, it was cleared that preparation of Ni-Fe alloy under the right temperature with the proper grain size favours for the potential downstream applications and generation of light materials.

中文翻译:

铁镍球磨纳米粉体和火花等离子烧结试样的饱和磁化研究

摘要 饱和磁化强度(Ms)是所有磁性能中的重要状态之一,它决定了材料既可以用作硬磁体也可以用作软磁体。已经研究了以 40、50 和 75 wt% Ni-Fe 有希望的水平烧结的机械合金化和放电等离子体,以找出 Ms 与成分、晶粒尺寸、颗粒尺寸和合金化程度的影响。该研究表明,由于形成 Ni3Fe 化合物,Ms 值会增加,这取决于晶粒尺寸。通过 X 射线衍射分析证实了 Ni3Fe 化合物的引入。发现环境温度在烧结 Ni-Fe 合金中起关键作用。发现Ms的值在中等粒径时较高,并且在粒径较大或较小时变得较低。从这项研究中,
更新日期:2018-11-01
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