Recycling of waste Nd-Fe-B sintered magnets by doping with dysprosium hydride nanoparticles
来源期刊：JOURNAL OF RARE EARTHS2015年第8期
论文作者：刘卫强 李超 ZAKOTNIK Miha 岳明 张东涛 黄秀莲
文章页码：846 - 849
摘 要：Recycling of waste sintered Nd-Fe-B permanent magnets by doping DyH 3 nanoparticles was investigated. The effect of the Dy H3 nanoparticles on the microstructure and magnetic properties of the recycled magnets was studied. As the DyH 3 nanoparticles additive increased, the coercivity of recycled magnet increased gradually. The recycled magnets with Dy H3 nanoparticle content between 0.0 wt.% and 1.0 wt.% maintained the remanence（Br）, but, with higher additions, the Br began to decrease rapidly. The best recycled magnet produced contained 1.0 wt.% of DyH 3 nanoparticles when compared to the properties of the starting waste sintering magnet. The Hcj, Br and（BH）max values of 101.7%, 95.4%, and 88.58%, respectively, were recovered.
刘卫强1，李超1，ZAKOTNIK Miha1，岳明1，张东涛1，黄秀莲2,3
1. College of Materials Science and Engineering, Beijing University of Technology
摘 要：Recycling of waste sintered Nd-Fe-B permanent magnets by doping DyH 3 nanoparticles was investigated. The effect of the Dy H3 nanoparticles on the microstructure and magnetic properties of the recycled magnets was studied. As the DyH 3 nanoparticles additive increased, the coercivity of recycled magnet increased gradually. The recycled magnets with Dy H3 nanoparticle content between 0.0 wt.% and 1.0 wt.% maintained the remanence（Br）, but, with higher additions, the Br began to decrease rapidly. The best recycled magnet produced contained 1.0 wt.% of DyH 3 nanoparticles when compared to the properties of the starting waste sintering magnet. The Hcj, Br and（BH）max values of 101.7%, 95.4%, and 88.58%, respectively, were recovered.
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