کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1801076 | 1024558 | 2009 | 6 صفحه PDF | دانلود رایگان |
We have successfully consolidated hydrogenation–disproportionation–desorption–recombination (HDDR) processed Nd–Fe–Co–Zr–B–Ga powder by spark plasma sintering (SPS). The field compacted samples were sintered at different temperatures (TS) from 550 to 600 °C with compressive pressure of 80 MPa for 20 min. Microstructural investigations by transmission electron microscopy indicated that the sintered specimen exhibits Nd2Fe14B grains of ~300 nm with Nd-rich grain boundary phase. The optimum magnetic properties of Br: 1.22 T, Hc: 928 kA/m, BHc: 600 kA/m, (BH)max: 210 kJ/m3 were obtained in the sample sintered at 550 °C. The strategy for further improving the coercivity and remanence is discussed based on the microstructure-property relationships.
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 22, November 2009, Pages 3681–3686