Minor-Cu doped soft magnetic Fe-based FeCoBCSiCu amorphous alloys with high saturation magnetization

The effects of Cu alloying on the amorphous-forming ability (AFA) and magnetic properties of the P-free Fe81Co5B11C2Si1 amorphous alloy were investigated. Addition of ≤ 1.0 at.% Cu enhances the AFA of the base alloy without significant deterioration of the soft magnetic properties. The Fe80.5Co5B11C...

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Published inAIP advances Vol. 8; no. 5; pp. 056115 - 056115-6
Main Authors Li, Yanhui, Wang, Zhenmin, Zhang, Wei
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.05.2018
AIP Publishing LLC
Subjects
Alloy development
Alloying effects
Alloys
Amorphous alloys
Coercivity
Magnetic properties
Magnetic saturation
Magnetism
Magnetization
Metallic glasses
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Summary:The effects of Cu alloying on the amorphous-forming ability (AFA) and magnetic properties of the P-free Fe81Co5B11C2Si1 amorphous alloy were investigated. Addition of ≤ 1.0 at.% Cu enhances the AFA of the base alloy without significant deterioration of the soft magnetic properties. The Fe80.5Co5B11C2Si1Cu0.5 alloy with the largest critical thickness for amorphous formation of ∼35 μm possesses a high saturation magnetization (B s) of ∼1.78 T, low coercivity of ∼14.6 A/m, and good bending ductility upon annealing in a wide temperature range of 513–553 K with maintaining the amorphous state. The fabrication of the new high-Fe-content Fe-Co-B-C-Si-Cu amorphous alloys by minor doping of Cu gives a guideline to developing high B s amorphous alloys with excellent AFA.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5006404