本文采用室温吸氢后"氢化一歧化一脱氢一再复合"(d-HDDR)工艺制备Nd12.5Fe80.4-xCoxGa0.5Zr0.1B6.5(x=0,4.0,8.0,12.0,15.0)各向异性永磁磁粉,研究了歧化氢压、歧化温度、再复合温度及合金元素Co的添加对Nd12.5Fe30.4-xCoxGa0.5Zr0.1B6.5合金磁性能的影响规律,并利用X射线衍射仪(XRD)对磁粉的微观结构进行了表征.结果表明,d-HDDR工艺制得的磁粉具有良好的磁性能,合金元索Co的添加可提高磁粉的磁性能.制得磁粉的典型性能为:Br=1.252T,jHc=768.7kA/m,(BH)max=253.4kJ/m3,DOA=0.58.
参考文献
| [1] | Müllier K-H;Grünberger W et al.Hot deformed HDDR Nd-Fe-B permanent magnets[J].Materials Letters,1998,34:50. |
| [2] | Ikegami T.;Hirosawa S.;Uehara M. .Improvements of irreversible thermal losses in anisotropic Nd2Fe14B-based resin-bonded permanent magnets made from HDDR powder[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1):64-68. |
| [3] | Uehara M;Tomida T et al.Magnetic domain structure of ani-sotropic Nd2Fe14 B-based magnets produced via the hydrogena-tion,decomposition,desorption and recombination (HDDR)process[J].Journal of Magnetism and Magnetic Materials,1996,159:L304. |
| [4] | Kawashita Y;Waki N et al.Magnetic properties of Nd-Fe-B system anisotropic HDDR powder made from segregated master ingots[J].Journal of Magnetism and Magnetic Materials,2004,269:293. |
| [5] | Igarashi K;Mori K;Morimoto K.[A].Sendai,Japan,2000:865. |
| [6] | 龚朝辉,宋晓平,高建荣.Co的添加对NdFeB合金HDDR磁粉磁性能的影响[J].兵器材料科学与工程,1999(03):14. |
| [7] | Satoshi Hirosawa;Yoshiyuki Tsubokawa .The Nd-Fe-B materi-als for permanent magnets[J].Journal of Magnetism and Magnetic Materials,1990,84(03):309. |
| [8] | Yang C J;Choi S D;Lee W Y .The effect of the Laves phase on the magnetic properties of Fe-Co-Nd-B alloys[J].Journal of Magnetism and Magnetic Materials,1991,96(1-3):60. |
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