Effect of Ce addition on the glass-forming ability and hard-magnetic properties of the Nd-Fe-Al bulk metallic glasses

Effect of Ce addition on the glass-forming ability and hard-magnetic properties of the Nd-Fe-Al bulk metallic glasses
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Ce添加对Nd-Fe-Al块状金属玻璃非晶能力和硬磁性能的影响

DOI:
10.1016/j.jnoncrysol.2016.10.024
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发表时间:
2017
影响因子:
3.5
通讯作者:
Xia S.
Xia S.
中科院分区:
材料科学2区
文献类型:
--
作者:
Lu Y. C.;Bai Q.;Bian L.;Xu H.;Xia S.

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研究了Ce对吸力铸造Nd60−xCexFe30Al10(x= 0−35)合金非晶形成能力(GFA)和硬磁性能的影响。铸态棒材的非晶形成能力在x= 0 ~ x= 30范围内随Ce含量的增加而增大,在x= 35范围内随Ce含量的增加而减小。成分为x= 0和x= 30的铸态棒材含有富铁区和富nd区两种非晶磁相,其居里温度为ret1和tc2。Ce原子在两磁相中分布不均匀,倾向于取代低磁相中的Nd。随着Ce的加入,合金的室温矫顽力和剩余物逐渐降低。形成玻璃化能力最好的合金forx= 30的饱和磁化强度(Ms)、剩磁强度(Mr)和矫顽力(iHc)分别为16.30 Am2/kg、10.22 Am2/kg和162.31 kA/m。
The influence of Ce addition on the glass-forming ability (GFA) and hard-magnetic properties of the Nd60−xCexFe30Al10(x= 0 − 35) alloy prepared by suction casting have been investigated. The glass-forming ability of the as-cast rods increased with the addition of Ce content fromx= 0 tox= 30, and then decreased forx= 35. The as-cast rods with a composition ofx= 0 andx= 30 contained two amorphous magnetic phases including Fe-rich regions and Nd-rich regions characterized by the Curie temperatureTc1andTc2. The Ce atoms may be unevenly distributed in the two magnetic phases, which prefer to substitute Nd in the lowTcphase. All the alloys exhibit hard magnetic behavior, while the room-temperature coercivity and remanence gradually decrease with the Ce addition. The saturation magnetization (Ms), remanence (Mr) and coercivity (iHc) of the alloy forx= 30 with the best glass-forming ability are 16.30 Am2/kg, 10.22 Am2/kg and 162.31 kA/m, respectively.
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