为了提高NdFeB磁体的磁性能, 通过球磨混粉的方式, 研究了通过在晶界上添加MgO, SiO2和CaO对烧结NdFeB磁性能的影响, 并采用扫描电镜分析了添加物在晶界相中的分布. 研究结果表明, 晶界添加适量MgO可实现磁体剩磁、最大磁能积的提高, 矫顽力几乎保持不变, 在当前实验条件下, 当添加量为0.1%时磁性能达到最大值.
参考文献
| [1] | 赵国仙;宋晓平;陈钟敏;闫阿儒 王笑天 .纯石墨粉对NdFeB烧结磁体的显微组织和磁性能的影响[J].功能材料,1998,29:20. |
| [2] | 赵国仙;宋晓平;陈钟敏;闫阿儒 王笑天 .W对烧结NdFeB磁体的显微组织和磁性能的影响功能材料[J].功能材料,1997,28:258. |
| [3] | Chen Zhongmin;Yan Aru;Wang Xiaotian.Effects of intergranular additions of oxides on the coercivity,thermal stability and microstructure of Nd-Fe-B magnets[J].Journal of Magnetism and Magnetic Materials,1996(162):307. |
| [4] | Ghandehari M H .Reactivity of Dy2O3 and Tb4O7 with Nd15Fe77B8 powder and the coercivity of the sintered magnets[J].Applied Physics Letters,1986,48(08):548. |
| [5] | Rabinovich Yu M;Sergeev V V;Maystrenko A D;Kulakovsky V Szymura S Bala H.Physical and mechanical properties of sintered Nd-Fe-B type permanent magnets[J].Intermetallics,1996(04):641. |
| [6] | 郭爱红,王岳,金建新.一次回火温度对烧结NdFeB永磁材料组织和性能的影响[J].材料开发与应用,2005(06):24-26. |
| [7] | 唐杰,刘颖,张然,杨刚,高升吉,涂铭旌.烧结钕铁硼永磁体矫顽力理论及其影响[J].材料导报,2006(04):61-63,73. |
| [8] | Yu LQ;Wen YH;Yan M .Effects of Dy and Nb on the magnetic properties and corrosion resistance of sintered NdFeB[J].Journal of Magnetism and Magnetic Materials,2004(2/3):353-356. |
| [9] | Yan A.;Wang XT.;Song XP. .EFFECT OF MINOR INTERGRANULAR ADDITIVES ON MICROSTRUCTURE AND MAGNETIC PROPERTIES OF ND-FE-B BASED MAGNETS[J].Journal of Magnetism and Magnetic Materials,1997(1/2):193-198. |
| [10] | Jiang Jianhua;Zeng Zhenpeng;Yu Jian;Wu Jiansheng Tokunaga M .The effect of Co addition on the fracture strength of NdFeB sintered magnets[J].Intermetallics,2001,9:269. |
| [11] | Zheng Jingwu;Jiang Liqiang;Qiao Liang;Lin Min .Refinement of melt-spun quenching NdFeB powders by ball milling[J].Journal of Rare Earths,2006,24:211. |
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