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SINTERED ND-FE-B MAGNET COMPOSITION AND A PRODUCTION METHOD FOR THE SINTERED ND-FE-B MAGNET

机译：烧结钕铁硼磁体的组成及其制造方法

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摘要

A sintered Nd—Fe—B magnet comprising at least one light rare earth element having a weight content between 31 wt. % and 35 wt. %, at least one heavy rare earth element having a weight content of no more than 0.2 wt. %, B having a weight content between 0.95 wt. % and 1.2 wt. %, at least one additive including Ti and having a weight content between 1.31 wt. % and 7.2 wt. %, Fe as a balance, and impurities including C, O, and N. Ti has a weight content between 0.3 wt. % and 1 wt. % and forms a Titanium-Iron-Boron phase with Fe and Boron B and being present in the sintered Nd—Fe—B magnet between 0.86 vol. % and 2.85 vol. %. The C, O, and N satisfy 630 ppm≦1.2C+0.6O+N≦3680 ppm. The sintered Nd—Fe—B magnet has a squareness factor of at least 0.95.

机译：一种烧结的Nd-Fe-B磁体，其包括至少一种重量含量在31重量％之间的轻稀土元素。％和35 wt。％，至少一种重稀土元素，其重量含量不超过0.2wt％。％，B具有0.95重量％之间的重量含量。％和1.2 wt。％，至少一种添加剂，包括Ti和重量含量在1.31重量％之间。％和7.2 wt。此外，Ti的重量含量为0.3重量％，Fe为余量，并且包括C，O和N的杂质。％和1 wt。％并与Fe和硼B形成钛-铁-硼相，并存在于0.86vol。％的烧结的Nd-Fe-B磁体中。％和2.85体积％。 C，O和N满足630ppm≤1.2C+ 0.6O +N≤3680ppm。烧结的Nd-Fe-B磁体的矩形系数至少为0.95。

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公开/公告号US2017372823A1

专利类型
公开/公告日2017-12-28

原文格式PDF
申请/专利权人 YANTAI SHOUGANG MAGNETIC MATERIALS INC.;
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申请/专利号US201715588584
发明设计人 KAIHONG DING;ZHONGJIE PENG;GUOHAI WANG;XIULEI CHEN;
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申请日2017-05-05
分类号H01F1/057;B22D11;C22C38/10;C22C38/06;C22C38;B22F9/04;C21D6;C22C38/14;B22F3/04;B22F3/16;B22F3/24;B22F9/02;C22C38/16;C21D9;
国家 US
入库时间 2022-08-21 13:01:12

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