Magnetic Properties of Fe-Based Amorphous Powders With High-Saturation Induction Produced by Spinning Water Atomization Process (SWAP)

Fe-based amorphous powders with high magnetic flux density were fabricated in an extremely high cooling rate of over 10 6 K/s by spinning water atomization process (SWAP). The composition of the alloys studied were Fe 79 (Si 0.5 B 0.5 ) 19 C 2 and Fe x (Si 0.3 B 0.7 ) 98-x C 2 (x = 79,80,81,83,84)....

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Bibliographic Details
Published in:IEEE transactions on magnetics 2008-11, Vol.44 (11), p.3891-3894
Main Authors: Otsuka, I., Wada, K., Maeta, Yu, Kadomura, T., Yagi, M.
Format: Article
Language:English
Subjects:
Amorphous materials
Amorphous powder
Applied sciences
Chromium
Cooling
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
high-saturation flux density
Iron alloys
Magnetic flux density
Magnetic properties
Magnetism
Materials science
Metal powders
Metals. Metallurgy
Other topics in materials science
Physics
Powder metallurgy. Composite materials
Powders
Production techniques
Silicon alloys
soft-magnetic
Spinning
Water
water atomization
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Summary:Fe-based amorphous powders with high magnetic flux density were fabricated in an extremely high cooling rate of over 10 6 K/s by spinning water atomization process (SWAP). The composition of the alloys studied were Fe 79 (Si 0.5 B 0.5 ) 19 C 2 and Fe x (Si 0.3 B 0.7 ) 98-x C 2 (x = 79,80,81,83,84). The saturation flux density Bs increased with increasing iron content. For Fe 83 (Si 0.3 B 0.7 ) 15 C 2 , the Bs value was 1.64 T, which is 31% higher than that of our previously developed (Fe 0.97 Cr 0.03 ) 76 (Si 0.5 B 0.5 ) 22 C 2 alloy. Furthermore, consolidated cores of amorphous powders were also fabricated by compact-pressing techniques.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.2002249