退火温度与成型压力对Fe-Si-Al磁粉芯性能的影响  

Effect of annealing temperature and compaction pressure on the properties of Fe-Si-Al magnetic cores

作　　者：万程 许欣蓓 鲁书潮 檀杰[1] 赵利明 冒爱琴[1] 郑翠红[1] WAN Cheng;XU Xin-bei;LU Shu-chao;TAN Jie;ZHAO Li-ming;MAO Ai-qing;ZHENG Cui-hong(School of Materials Science and Engineering,Anhui University of Technology,Ma’anshan 243002,China;Maanshan New Conda Magnetic Industrial Co,Ltd,Ma’anshan 243002,China)

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]马鞍山新康达磁业有限公司,安徽马鞍山243002

出　　处：《磁性材料及器件》2023年第5期28-33,共6页Journal of Magnetic Materials and Devices

基　　金：安徽省科技厅重点研发项目(202104a05020031)。

摘　　要：采用层状硅酸镁铝凝胶为包覆剂,对气雾化球形Fe-Si-Al合金磁粉进行绝缘包覆制备磁粉芯。研究了退火温度与成型压力对Fe-Si-Al磁粉芯性能的影响。研究表明,退火温度从650℃增至800℃时,Fe-Si-Al磁粉芯的有效磁导率μe由57.8提高至64.8,而其功率损耗P_(cv)由202.6 mW/cm^(3)显著下降至117.8 mW/cm^(3);成型压力从1200 MPa增加至2090 MPa时,Fe-Si-Al磁粉芯的密度ρ由5.51 g/cm^(3)上升至5.89 g/cm^(3),其有效磁导率μe由46.3显著提高至64.8,而功率损耗P_(cv)由123.5 mW/cm^(3)下降至117.8 mW/cm^(3)。通过损耗分离发现,升高退火温度和成型压力能显著降低其磁滞损耗Ph,而其涡流损耗Pe小幅度上升。In this paper,layered magnesium aluminum silicate gel was used as the coating agent to insulate the gas atomized spherical Fe-Si-Al alloy magnetic powder.The effects of annealing temperature and compaction pressure on the magnetic and mechanical properties of Fe-Si-Al magnetic powder cores were studied.The research shows that when the annealing temperature increases from 650℃to 800℃,the effective permeabilityμe of Fe-Si-Al magnetic powder core increases from 57.83 to 64.75,while its power loss P_(cv)decreases significantly from 202.6 mW/cm^(3)to 117.8 mW/cm^(3).When compaction pressure increases from 1200 MPa to 2090 MPa,the densityρof Fe-Si-Al magnetic powder core increases from 5.51 g/cm^(3)to 5.89 g/cm^(3),its effective permeabilityμe increases significantly from 46.34 to 64.75,and its power loss P_(cv)increases from 123.5 mW/cm^(3)dropped to 117.8 mW/cm^(3).Through loss separation,it is found that increasing the annealing temperature and compaction pressure can significantly reduce the hysteresis loss Ph,while the eddy current loss Pe increases slightly.

关 键 词：Fe-Si-Al磁粉芯 退火温度 成型压力 损耗 性能 

分 类 号：TM271[一般工业技术—材料科学与工程]