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Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples
Journal of Alloys and Compounds ( IF 6.2 ) Pub Date : 2021-02-25 , DOI: 10.1016/j.jallcom.2021.159318
V. Chaudhary , Li Ping Tan , Vinay K. Sharma , R.V. Ramanujan

Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials.



中文翻译:

通过成分梯度火花等离子体烧结样品加速磁性Fe-Co-Ni合金的研究

软磁体广泛应用于旋转电机中。下一代旋转电机迫切需要加快开发居里温度高,机械强度高,软磁的新型磁体。研究了三元Fe-Co-Ni合金体系。火花等离子体烧结(SPS)用于处理成分分级的(Ni-21Fe)-xCo样品。对样品部分的结构,磁,机械和电性能进行了组合评估。贫钴合金表现出良好的磁,机械和电性能组合,但居里温度较低。另一方面,富钴合金表现出升高的T c,高M s,硬度大。具有广泛性能的合金库,M s:100–150 emu / g,H c:0.8–30 Oe,T c:571–1108°C,ρ:9–12.9μΩ-cm,纳米硬度:0.96–开发了1.56 GPa。因此,SPS处理过的样品可用于磁性材料的加速筛选。

更新日期:2021-03-01
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