Abstract Effects of the distribution of rare-earth elements on 2:14:1-type Ce-based sintered magnet with same nominal composition were investigated by respectively doping Nd-Fe and Ce-Fe eutectic alloys. The coercivity and the thermal stability of the magnet doping Nd-Fe alloy revealed more excellent performance (iHc = 12.19kOe,α = −0.1474%/°C, β = −0.5129%/°C) than those of the magnet doping Ce-Fe alloy (iHc = 10.13kOe, α = −0.1665%/°C, β = −0.5271%/°C). The difference of the newly formed grain boundary phases and elemental enrichment variation of the matrix phase grain for the processed magnets were two major reasons of the coercivity discrepancy. Ce-based magnet with optimized structure was obtained and this method was promising to maximize the utilization of abundant rare-earth element Ce in 2:14:1-type magnet.

中文翻译：

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掺杂Nd-Fe/Ce-Fe合金的Ce基烧结磁体的设计与制造

摘要 通过分别掺杂Nd-Fe和Ce-Fe共晶合金，研究了稀土元素分布对标称成分相同的2:14:1型Ce基烧结磁体的影响。磁体掺杂 Nd-Fe 合金的矫顽力和热稳定性显示出比磁体掺杂 Ce- 更优异的性能 (iHc = 12.19kOe,α = -0.1474%/°C, β = -0.5129%/°C)铁合金（iHc = 10.13kOe，α = -0.1665%/°C，β = -0.5271%/°C）。加工后的磁体新形成的晶界相的差异和基体相晶粒的元素富集变化是矫顽力差异的两个主要原因。获得了结构优化的Ce基磁体，该方法有望最大限度地利用2:14:1型磁体中丰富的稀土元素Ce。