Method for identifying irreversible demagnetization of grain boundary diffusion NdFeB magnet

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United States of America Patent

PATENT NO 12092707
APP PUB NO 20240168110A1
SERIAL NO

18422131

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The present application relates to a technical field of determining an irreversible demagnetization of a grain boundary diffusion NdFeB magnet, and more particularly, to a method for identifying an irreversible demagnetization of a grain boundary diffusion NdFeB magnet by magnetic field distribution. After applying a reverse magnetic field to a saturatedly magnetized grain boundary diffusion NdFeB magnet, if a number of magnetic poles on a non-diffusion face of the grain boundary diffusion NdFeB magnet is increased, it is determined that there is an irreversible demagnetization in the grain boundary diffusion NdFeB magnet.

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Patent Owner(s)

Patent OwnerAddress
HANGZHOU MAGMAX TECHNOLOGY CO LTDTONGLU COUNTY HANGZHOU ZHEJIANG 311500
HANGZHOU FORESEE GROUP HOLDING CO LTDBUILDING 9 SANWEI ZHIHUI CENTER WUCHANG STREET YUHANG DISTRICT HANGZHOU ZHEJIANG 310023

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Di, Jinghui Zhejiang, CN 3 1
Jia, Shengli Zhejiang, CN 3 1
Liu, Huiqiang Zhejiang, CN 4 19
Meng, Hui Zhejiang, CN 25 66
Wei, Qifeng Zhejiang, CN 9 24
Wu, Xiongfei Zhejiang, CN 3 3

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