Gradient Nd—Fe—B magnet and a method of production

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United States of America

PATENT NO 12080478
SERIAL NO

16459448

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Abstract

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A gradient Nd—Fe—B magnet includes an Nd—Fe—B magnet block extending along a magnetization direction and having a plurality of surfaces perpendicular to the magnetization direction. A first film, is disposed on one of the surfaces. A second film is disposed on another one of the surfaces, opposite of the one of the surfaces. The first film and the second film are diffused into the Nd—Fe—B magnet block dividing the Nd—Fe—B magnet block into an edge region, a transition region, and a central region along a plane perpendicular to the magnetization direction wherein the edge region has a coercivity that remains constant in a direction perpendicular to the magnetization direction, and the coercivity, along said magnetization direction, gradually decreases from the one of the surfaces and the another one of the surfaces towards a point located therebetween. A method of making the gradient Nd—Fe—B magnet is disclosed herein.

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Patent Owner(s)

Patent OwnerAddress
YANTAI SHOUGANG MAGNETIC MATERIALS INCFUSHAN DISTRICT YANTAI CITY 265500

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Peng, Zhongjie Yantai, CN 44 17
Wang, Chuanshen Yantai, CN 16 6
Yang, Kunkun Yantai, CN 25 11

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