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熱處理對燒結(jié)NdFeB磁體微觀結(jié)構(gòu)和磁性能的影響
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TG146.4

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Effect of Annealing on Microstructure and Magnetic Properties of Sintered NdFeB Magnets
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    摘要:

    系統(tǒng)研究了熱處理對燒結(jié)NdFeB磁體微觀結(jié)構(gòu)和磁性能的影響.結(jié)果表明：二級回火熱處理后,磁體微觀組織結(jié)構(gòu)得到明顯改善,晶界變得更加規(guī)整、平滑,富Nd相均勻彌散地分布于晶粒周圍,晶界相成分趨于穩(wěn)定、均勻;磁體的內(nèi)稟矯頑力顯著提高,剩磁及最大磁能積也有一定程度的提高,極大地改善了磁體的熱穩(wěn)定性.

    Abstract:

    The effect of annealing process on the microstructure and magnetic properties of sintered NdFeB magnets were studied. The results show that the microstructure of magnets is ameliorated after annealing. The grain boundary became smoother and clearer, the Nd-rich phase distributed surrounding the grain dispersedly and equably, and the boundary phase became stable and well-proportioned. Therefore, the coercive force was remarkably enhanced, the residual magnetism and (BH) max were increased at the same time, and thermal stability of the magnet was improved enormously.

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周圣銀 周廉 陳紹楷 羅建軍.熱處理對燒結(jié)NdFeB磁體微觀結(jié)構(gòu)和磁性能的影響[J].稀有金屬材料與工程,2006,35(6):1006~1008.[Zhou Shengyin, Zhou Lian, Chen Shaokai, Luo Jianjun. Effect of Annealing on Microstructure and Magnetic Properties of Sintered NdFeB Magnets[J]. Rare Metal Materials and Engineering,2006,35(6):1006~1008.]
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  • 收稿日期:2005-12-27
  • 最后修改日期:2006-02-21
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