Differences in the structure and magnetic properties of(Nd0.75Pr0.25)9.5Fe76X4B10.5（X=Nb, Zr） ribbons by conventional and microwave-assisted annealing treatment
来源期刊：Journal of Rare Earths2017年第7期
论文作者：王天鹏 王占勇 杨文亚 周鼎 吴佳恒 周冰 金鸣林 董广乐 隋延力
文章页码：667 - 672
摘 要：Amorphous ribbons with(Nd0.75Pr0.25)9.5Fe76X4B10.5（X=Nb, Zr） nominal composition were annealed by conventional and microwave-assisted annealing furnaces, respectively. The thermal decomposition process, structure and magnetic properties of products were characterized by a thermal differential scanning calorimeter（DSC）, X-ray diffraction（XRD） and a vibrating sample magnetometer（VSM）. The addition of Nb and Zr increased the glass-forming ability（GFA） of as-spun ribbons. The proportion of Nd2Fe14B and α-Fe could be adjusted with power from 800 to 2000 W in microwave annealing process, during which the well-coupling between the soft and hard magnetic phase and higher coercivity reached up to 780.2 and 815.4 kA/m for（Nb,Zr）-doped alloys. The best magnetic properties of ribbons could be obtained by annealing at 650 oC for 10 min under the microwave power of 2000 W.
王天鹏1，王占勇1，杨文亚1，周鼎1，吴佳恒1，周冰1，金鸣林1，董广乐2，隋延力2
1. School of Materials Science and Engineering, Shanghai Institute of Technology2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing
摘 要：Amorphous ribbons with(Nd0.75Pr0.25)9.5Fe76X4B10.5（X=Nb, Zr） nominal composition were annealed by conventional and microwave-assisted annealing furnaces, respectively. The thermal decomposition process, structure and magnetic properties of products were characterized by a thermal differential scanning calorimeter（DSC）, X-ray diffraction（XRD） and a vibrating sample magnetometer（VSM）. The addition of Nb and Zr increased the glass-forming ability（GFA） of as-spun ribbons. The proportion of Nd2Fe14B and α-Fe could be adjusted with power from 800 to 2000 W in microwave annealing process, during which the well-coupling between the soft and hard magnetic phase and higher coercivity reached up to 780.2 and 815.4 kA/m for（Nb,Zr）-doped alloys. The best magnetic properties of ribbons could be obtained by annealing at 650 oC for 10 min under the microwave power of 2000 W.
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