Tetragonal Ce‐based Ce‐Sm(Fe, Co, Ti)12 alloys for permanent magnets
Tetragonal Ce‐based Ce‐Sm(Fe, Co, Ti)12 alloys for permanent magnets
复制标题
四方 Ce 基 Ce-Sm(Fe, Co, Ti)12 永磁合金
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
G. Hadjipanayis
中科院分区：
文献类型：
--
作者：
A. Martín;A. Gabay;D. Salazar;J. Barandiaran;G. Hadjipanayis
Ce的丰富和相对较低的成本为它在稀土永磁体中的应用提供了很大的动力。最近有报道称，四元Ce（Fe，Co，Ti）12化合物可能具有应用价值的内禀磁性。在这项工作中，α-Fe相的形成，由于Sm的蒸发在合金制造过程中的效果进行了研究，作为一个前一步，在试图将固有的磁性转化为永磁体的功能特性。采用快淬法制备了具有ThMn 12型晶体结构的Ce0.5Sm0.5Fe9Co2Ti合金。当α-Fe相含量为8 ~ 46%时，矫顽力为2.8 ~ 1.4kOe，表明α-Fe相对磁性和软硬相之间的交换耦合有影响。（© 2016 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）
Abundance and relatively low cost of Ce provide a great incentive for its use in rare-earth permanent magnets. It has been recently reported that the tetragonal Ce(Fe,Co,Ti)12 compounds may exhibit application-worthy intrinsic magnetic properties. In this work the effect of the α-Fe phase formation due to the evaporation of Sm during alloy fabrication has been studied, as a previous step in the attempt to convert the intrinsic magnetic properties into functional properties of a permanent magnet. Ce0.5Sm0.5Fe9Co2Ti alloys based on the ThMn12-type crystal structure have been synthesized via melt-spinning with different Sm content. Coercive fields between 2.8 and 1.4 kOe have been found for α-Fe phase contents between 8 and 46% in volume, showing the influence of the α-Fe phase on the coercivity and exchange coupling between the hard and soft phase. (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)