Neodymium-iron-boron magnetic body having gradient distribution and preparation method thereof

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United States of America Patent

PATENT NO 12062472
APP PUB NO 20220328219A1
SERIAL NO

17434685

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Abstract

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The present disclosure provides neodymium-iron-boron magnetic body having gradient distribution, comprising an ease-to-demagnetize zone and a hard-to-demagnetize zone, wherein in a direction perpendicular to magnetization direction, remanence of the ease-to-demagnetize zone is less than remanence of the hard-to-demagnetize zone, and coercivity of the ease-to-demagnetize zone is greater than coercivity of the hard-to-demagnetize zone; and along the direction perpendicular to magnetization direction, the remanence and the coercivity of the ease-to-demagnetize zone are respectively a constant value, and the remanence and the coercivity of the hard-to-demagnetize zone are respectively a constant value. Due to the gradient distribution of remanence and coercivity of the neodymium-iron-boron magnetic body provided by the present application, the remanence, coercivity, magnetic flux and surface magnetic field of the neodymium-iron-boron magnetic body are optimized.

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Patent Owner(s)

Patent OwnerAddress
JL MAG RARE EARTH CO LTDNO 81 WEST JINLING ROAD DEVELOPMENT ZONE GANZHOU CITY JIANGXI 341000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cai, Baogui Ganzhou, CN 2 1
Liao, Minghuo Ganzhou, CN 2 0
Liu, Yong Ganzhou, CN 1235 24302
Wu, Haiming Ganzhou, CN 27 271

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