退火方式对Fe_(17)Ni_(81)Mo_(2)软磁粉芯性能的影响  

Effect of annealing methods on properties of Fe_(17)Ni_(81)Mo_(2) soft magnetic powder cores

作　　者：赵尔确 唐坚 郑凯鹤 王伟 李英杰 刘瑾 ZHAO Er-que;TANG Jian;ZHENG Kai-he;WANG Wei;LI Ying-jie;LIU Jin(School of Renewable Energy,Shenyang Institute of Engineering,Shenyang 110136,China)

机构地区：[1]沈阳工程学院新能源学院,辽宁沈阳110136

出　　处：《磁性材料及器件》2022年第6期91-94,共4页Journal of Magnetic Materials and Devices

基　　金：辽宁省教育厅自然科学基金资助项目(JL-2016)。

摘　　要：采用粉末冶金的方法制备了Fe_(17)Ni_(81)Mo_(2)磁粉芯,利用扫描电镜检测磁粉芯微观形貌,利用B-H分析仪检测磁粉芯的磁导率和损耗。对磁粉芯分别进行常规和磁场退火,分析了两种退火工艺对Fe_(17)Ni_(81)Mo_(2)磁粉芯性能的影响。结果显示,常规退火时随退火温度提高,磁粉芯的磁导率增大、磁损耗下降,但当退火温度超过650℃时,扫描电镜检测发现磁粉之间的粘结剂会发生烧蚀现象,恶化磁粉芯性能;与常规退火对比发现,磁场退火能够改善磁粉芯磁导率的稳定性,显著降低损耗,并且横向磁场退火的效果比纵向磁场退火更好,在3 MHz测试条件下横向磁场退火后磁粉芯的磁导率为40.9,总损耗为26.8 kW/m^(3)。In this experiment,Fe_(17)Ni_(81)Mo_(2) powder core was prepared by powder metallurgy.The micro morphology of the magnetic particle core was detected by scanning electron microscope,and the permeability and loss of the magnetic particle core were detected by B-H analyzer.Compared the effect of common annealing and magnetic annealing on the magnetic properties of Fe_(17)Ni_(81)Mo_(2) powder cores.The results show that when the conventional annealing method is used,the magnetic permeability of the magnetic particle core will increase with the increase of annealing temperature and the magnetic loss of the magnetic particle core will decrease,but excessive annealing(>650℃)will ablate the insulating material between magnetic particles and deteriorate the magnetism.By comparing the two annealing processes,it is concluded that magnetic annealing can improve the performance of magnetic particle core,and the transverse magnetic field is better.At 3 MHz,the magnetic permeability and total loss of the powder core after annealing with transverse magnetic field are 40.9 and 26.8 kW/m^(3),respectively.

关 键 词：磁场退火 磁粉芯 纵向磁场 横向磁场 

分 类 号：TM2712[一般工业技术—材料科学与工程]