High-resistivity sintered samarium-cobalt magnet and preparation method thereof

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United States of America Patent

PATENT NO 11862370
APP PUB NO 20220375662A1
SERIAL NO

17723646

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Abstract

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The present invention discloses a high-resistivity sintered samarium-cobalt magnet and a preparation method thereof. According to the present invention, considering the specialty of sintered samarium-cobalt magnetic powder, fluoride or oxide is firstly prepared into nano-powder using high-energy ball milling, and the samarium-cobalt magnetic powder is prepared separately by rolling ball milling or high-speed jet milling, and then a certain electric field is applied in a fluoride suspension to drive the fluoride nano-powder to evenly cover a surface of the samarium-cobalt magnetic powder. The present invention breaks through the technical bottleneck that fluoride/oxide can improve the resistivity of a samarium-cobalt magnet but result in deterioration of the magnetic properties.

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Patent Owner(s)

Patent OwnerAddress
CHINA JILIANG UNIVERSITY310018 NO 258 SOURCE STREET XIASHA HIGHER EDUCATION PARK HANGZHOU ZHEJIANG HANGZHOU CITY ZHEJIANG PROVINCE 310018

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ge, Hongliang Zhejiang, CN 6 1
Pan, Minxiang Zhejiang, CN 5 1
Sun, Jianghui Zhejiang, CN 1 0
Wu, Qiong Zhejiang, CN 119 665
Yang, Hangfu Zhejiang, CN 4 1
Yu, Nengjun Zhejiang, CN 3 1

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