Nd-Fe-B PERMANENT MAGNETIC MATERIAL AND PREPARATION METHOD THEREOF
AssigneeBYD Company Limited
InventorsQing Gong, Zhiqiang Zhang, Surong Zhang, Xin Du, Xiaofeng Cheng
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Abstract
The present disclosure discloses a permanent magnetic material comprising an Nd—Fe—B alloy and an additive including at least a cobalt ferrite, and a method for preparing a permanent magnetic material. The method comprises steps of mixing an Nd—Fe—B alloy and an additive including at least a cobalt ferrite to obtain a mixture; magnetically orienting and pressing the mixture in a magnetic filed; and sintering and tempering the mixture under the protection of vacuum or an inert gas.
Claims14
A permanent magnetic material, comprising:
- an Nd—Fe—B alloy;
- and an additive including at least a cobalt ferrite.
A method for preparing a permanent magnetic material, comprising steps of:
- mixing an Nd—Fe—B alloy and an additive including at least a cobalt ferrite to obtain a mixture;
- magnetically orienting and pressing the mixture in a magnetic filed;
- and sintering and tempering the mixture under the protection of vacuum or an inert gas.
Dependencies are inferred from the claim text.