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氧对Nd-Fe-B永磁合金的组织和磁性能的影响

Effects of Oxygen on the Structure and Property of Nd-Fe-B Pe rmanent Magnetic Alloy

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【作者】 解振林田薇陈连生

【Author】 XIE Zhen-lin,TIAN Wei,CHEN Lian-sheng(Hebei Institute of Technology,Tangshan 063009,China)

【机构】 河北理工学院河北理工学院 河北 唐山 063009河北 唐山 063009河北 唐山 063009

【摘要】 研究了氧对Nd-Fe-B永磁合金的组织和磁性能的影响。结果表明,在含氧量很低的Nd-Fe-B永磁合金中引入适量的氧,在晶界上形成一薄层氧化物,可防止磁体烧结时晶粒聚集长大,得到细小、均匀的晶粒,明显地提高合金的矫顽力,剩余磁感应强度稍有降低,最大磁能积略有提高。但是,防止合金烧结时晶粒聚集长大,获得理想的组织和磁性能的根本措施是采用铸带工艺。

【Abstract】 In this paper, the effects of oxygen on the st ructure and property of Nd-Fe-B permanent magnetic alloy was researched It was shown that the thin oxide is formed on the grain boundaries if just the right amount oxygen was introduced with a very low oxygen content, preventing the grains to gather in the sinter, obtaining small and homogeneous grains It raises markedly the coercive force of the magnets with a few increase of the maximum magnetic energy product, but reducing slightly the residual induction intensity

  • 【分类号】TG132.27
  • 【被引频次】1
  • 【下载频次】79
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