发明名称 |
Method of manufacturing fully dense Nd-Fe-B magnets with enhanced coercivity and gradient microstructure |
摘要 |
<p>The present invention relates to a method of manufacturing fully dense Nd-Fe-B magnets by mixing Nd-Fe-B ribbons with a powder containing a heavy rare earth metal. The mixture comprises 1-4 wt% of the heavy rare earth metal and is in the first step spark plasma sintered to a fully dense nanocrystalline Nd-Fe-B magnet and subsequently in a second step annealed to allow the diffusion of the heavy rare earth metal. With this method an enhancement of coercivity of approximately 30 % can be achieved.</p> |
申请公布号 |
EP2869311(A1) |
申请公布日期 |
2015.05.06 |
申请号 |
EP20130005137 |
申请日期 |
2013.10.29 |
申请人 |
INSTITUTE JOZEF STEFAN |
发明人 |
MCGUINESS, PAUL JOHN;SODERZNIK, MARKO;ZAGAR, KRISTINA;ANDRAZ, KOCJAN;SPOMENKA, KOBE |
分类号 |
H01F1/057;H01F41/02 |
主分类号 |
H01F1/057 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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