东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (6): 837-840.DOI: -

• 论著 • 上一篇    下一篇

降低软磁铁硅铝磁粉芯损耗的研究

李庆达;连法增;尤俊华;陈玉兰;   

  1. 东北大学材料与冶金学院;梅州磁性材料厂;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-06-15 发布日期:2013-06-22
  • 通讯作者: Li, Q.-D.
  • 作者简介:-
  • 基金资助:
    广东省教育部产学研结合专项基金资助项目(2006D90404027);;

Study on reducing loss of Fe-Si-Al soft magnetic powder cores

Li, Qing-Da (1); Lian, Fa-Zeng (1); You, Jun-Hua (1); Chen, Yu-Lan (2)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) Meizhou Magnetic Material Factory, Meizhou 514031, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-06-15 Published:2013-06-22
  • Contact: Li, Q.-D.
  • About author:-
  • Supported by:
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摘要： 为制备高性能的软磁铁硅铝磁粉芯,研究了降低铁硅铝磁粉芯损耗的方法.采用扫描电镜、金相显微镜、B-H分析仪检测样品的内部结构、形貌、磁性能.研究结果表明,压制后的退火处理是降低铁硅铝磁粉芯损耗的关键,增加热处理温度能够有效地降低磁粉芯的涡流损耗和磁滞损耗,过高的热处理温度会增大涡流损耗,最佳的热处理温度区间为660~720℃;添加绝缘剂能够有效地提高磁粉芯的电阻,降低其涡流损耗,对磁滞损耗的影响不大;增大成型压力可降低铁硅铝磁粉芯的损耗和矫顽力,最佳的成型压力为1 800 MPa.

关键词: 磁滞损耗, 涡流损耗, 成型压力, 退火, 矫顽力

Abstract: To prepare the high-performance Fe-Si-Al soft magnetic powder cores, how to reduce the loss of Fe-Si-Al magnetic powder cores was explored. SEM, metallographic microscope and B-H analyzer were used to characterize the interior structure, morphology and magnetic properties of samples. The results indicated that the annealing following compaction is crucial to reducing the loss of Fe-Si-Al powder cores, and increasing annealing temperature can effectively reduce both hysteresis loss and eddy current loss, but over-annealing temperature can increase eddy current loss. The range of optimal annealing temperature is 660-720°C. Although adding insulating material into the powder can effectively reduce eddy current loss by increasing the resistance of powder core, it has small influence on hysteresis loss. Increasing shaping pressure can reduce the loss of the magnetic powder cores and coercive force, and the optimal shaping pressure is 1800 MPa.

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