Phase transformation and magnetic properties of fully dense Sm(Fe0.8Co0.2)11Ti bulk magnets

SCRIPTA MATERIALIA

卷:193

Article

Qian, Hui-Dong^1,2  Lim, Jung Tae¹  Kim, Jong-Woo¹  Yang, Yang¹  Cho, Kyung Mox²  Park, Jihoon¹  Choi, Chul-Jin¹ 

[1] Korea Inst Mat Sci, Powder & Ceram Div, Chang Won 51508, Gyeongsangnam D, South Korea

[2] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 46241, South Korea

关键词: Phase transformation;    Magnetic properties;    Microstructure;    Transmission electron microscopy;   

DOI  :  10.1016/j.scriptamat.2020.10.030

来源: Elsevier

【 摘 要 】

High density sintered Sm(Fe0.8Co0.2)(11)Ti bulk magnets were successfully produced using a newly de-veloped high pressure pressing fabrication method. The purity of the hard magnetic ThMn12 phase in the bulk magnet reached to higher than 97 wt.%. The phase transformation behavior from amorphous to ThMn12 phase during heat treatment was systematically investigated by transmission electron microscopy. The remanent magnetization and maximum energy product of a bulk magnet were 96.0 emu/g and 12.22 MGOe, respectively. To the best of our knowledge, the achieved maximum energy product is the highest among all the SmFe12-based bulk magnets reported. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd.

【 授权许可】

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