Rare earth permanent magnet material and raw material composition,preparation method therefor and use thereof

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United States of America

PATENT NO 12198840
APP PUB NO 20220165462A1
SERIAL NO

17600102

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Abstract

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A rare earth permanent magnet material and a raw Material composition, a preparation method therefor and use thereof. The rare earth permanent magnet material comprises the following components in percentage by mass: 29.0-32.0 wt. % of R, where R comprises RH, and the content of RH is greater than 1 wt. %; 0.30-0.50 wt. % of Cu (not including 0.50 wt. %); 0.10-1.0 wt. % of Co; 0.05-0.20 wt. % of Ti; 0.92-0.98 wt. % of B; and the remainder being Fe and unavoidable impurities; wherein R is a rare-earth element and at least comprises Nd; and RH is a heavy rare-earth element and at least comprises Tb. The R-T-B system permanent magnet material exhibits excellent performance, wherein Br≥14.30 kGs, and Hcj≥24.1 kOe. The invention can synchronously improve Br and Hcj.

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Patent Owner(s)

Patent OwnerAddress
FUJIAN GOLDEN DRAGON RARE-EARTH CO LTDFUJIAN 366300

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Jiaying Fujian, CN 23 1
Huang, Qingfang Fujian, CN 4 0
Lan, Qin Fujian, CN 12 12
Mou, Weiguo Fujian, CN 10 0
Xie, Zhixing Fujian, CN 2 0

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