Iron oxide magnetic powder and manufacturing method therefor

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United States of America Patent

PATENT NO 11657935
APP PUB NO 20210241950A1
SERIAL NO

17051979

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Abstract

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The present invention relates to a method for producing a magnetic powder, including: preparing a precursor solution containing an iron precursor and a silica precursor; spraying the precursor solution to form iron/silica precursor droplets; drying the iron/silica precursor droplets to produce iron/silica precursor particles; and heat treating the iron/silica precursor particles to produce an iron oxide/silica composite powder in which iron oxide particles are embedded in a silica matrix. The present invention also relates to a magnetic powder produced by the method. The present invention may provide an iron oxide magnetic powder that does not use rare earth elements and a method for producing the same.

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Patent Owner(s)

Patent OwnerAddress
KOREA INSTITUTE OF MACHINERY & MATERIALSDAEJEON 34103

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baek, Youn Kyoung Changwon-Si, KR 3 0
Kim, Kyung Min Busan, KR 158 927
Kim, Young Kuk Changwon-Si, KR 33 325
Lee, Jung Goo Busan, KR 7 7
Pyo, Min Ji Changwon-Si, KR 1 0

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