Design of Fe-based nanocrystalline alloys with superior magnetization and manufacturability

被引：152

作者：

Li, Hu ^{[1
,2
]}

Wang, Anding ^{[1
,3
,4
]}

Liu, Tao ^{[3
]}

Chen, Pingbo ^{[1
]}

He, Aina ^{[1
]}

Li, Qiang ^{[2
]}

Luan, Junhua ^{[3
]}

Liu, Chain-Tsuan ^{[3
,4
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo, Zhejiang, Peoples R China

[2] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi, Xinjiang, Peoples R China

[3] City Univ Hong Kong, Coll Sci & Engn, Dept Mat Sci Engn, Kowloon, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Hong Kong Inst Adv Study, Kowloon, Hong Kong, Peoples R China

来源：

MATERIALS TODAY | 2021年 / 42卷

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.mattod.2020.09.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-based alloys with a nanocrystalline-amorphous nanostructure exhibit superior soft-magnetic performances; however they generally suffer from the low magnetization because of their heavy doping for an acceptable manufacturability. In this study, we proposed a revolutionary nanostructure-construction concept based on preforming dense nuclei in the melt-quenching process with a critical cooling-rate and refining the nano-structure via transient metalloid-rich interfaces. A novel alloy composition of Fe85.5B10Si2P2C0.5 was developed via our multi-metalloid stabilization and critical formability strategies by using a total of only 4.6 wt. % light metalloids. This unique alloy design effort leads to unprecedented magnetic properties with the super-high B-s of 1.87 T and mu(e) of 1.0-2.5 x 10(4), which outperform all commercial counterparts and have a high potential to substitute for commercial bulk Si-steels currently used for soft-magnetic applications. This hetero-structuring and lean-alloying strategy provides a paradigm for the next-generation of magnetic materials.Y

引用

页码：49 / 56

页数：8

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