FE-BASED SOFT MAGNETIC ALLOY AND MAGNETIC PART USING SAME

WIPO Patent Application WO/2018/043963

A1

An Fe-based soft magnetic alloy is provided. The Fe-based soft magnetic alloy according to an embodiment of the present invention is represented by empirical formula FeaBbCcCud wherein a, b, c and d indicate the at%(atomic percent) of corresponding elements, 78.5≤≤a≤≤87.0, 12≤b+c≤≤21 and 0.5≤≤d≤≤1.5, and comprises α-Fe and metal compounds formed with Fe and at least one element of B, C and Cu. Accordingly, the alloy has a high saturated magnetic flux density, excellent high-frequency characteristics and low coercivity, and thus can be very easily employed as a compact and light high-performance and high-efficiency part. Also, the present invention incurs a very low production cost and can be mass-produced by facilitating alloy production by allowing easy control of components, contained in the alloy, during the alloy production process. Accordingly, the present invention can be widely applied as a magnetic part of electric and electronic devices such as a high-power laser, a high-frequency power supply, a high-speed pulse generator, an SMPS, a high-pass filter, a low-loss high-frequency transformer, a high-speed switch and wireless charging.

KIM JONG RYOUL (KR)
KANG MIN (KR)
KIM WOO CHUL (KR)
OH HAN HO (KR)
SONG YONG SUL (KR)

PCT/KR2017/009005

March 08, 2018

August 18, 2017

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IUCF HYU ERICA CAMPUS (KR)
AMOGREENTECH CO LTD (KR)

H01F1/153; C22C1/00; C22C45/02

JP2011149045A	2011-08-04
JP2006040906A	2006-02-09
KR20120003496A	2012-01-10
KR930011234B1	1993-11-29
JP2003060263A	2003-02-28

ERUUM & LEEON INTELLECTUAL PROPERTY LAW FIRM (KR)

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