采用温压成形工艺将水雾化Fe Si Al粉末制备成磁粉芯;用X射线衍射对原始粉末和经过绝缘包覆及热处理的粉末进行物相分析;采用软磁交流测试仪测量磁粉芯的磁损耗;利用精密磁性元件分析仪测量样品的磁导率。混合不同质量分数的硬脂酸锌和...采用温压成形工艺将水雾化Fe Si Al粉末制备成磁粉芯;用X射线衍射对原始粉末和经过绝缘包覆及热处理的粉末进行物相分析;采用软磁交流测试仪测量磁粉芯的磁损耗;利用精密磁性元件分析仪测量样品的磁导率。混合不同质量分数的硬脂酸锌和聚乙二醇(PEG)作为温压润滑剂,并研究其对Fe Si Al磁粉芯性能的影响。结果表明,1 100 MPa/100℃的温压成形条件下,当硬脂酸锌和PEG质量比为2:3,添加温压润滑剂的质量分数为1.3%时,磁粉芯生坯密度达到最大值5.75 g/cm3,热处理后为5.74 g/cm3。660℃×1 h热处理后,100 k Hz下,相应的有效磁导率?e达到137.9;350 k Hz/50 m T下磁损耗Ps为81.78 W/kg。展开更多
采用1100 MPa/100℃温压成形工艺,将水雾化Fe Si Al粉末制备成磁粉芯。分别研究热处理温度和时间对Fe Si Al磁粉芯性能的影响。结果表明:在1100 MPa/100℃温压成形条件下,采用630℃×1 h的热处理工艺时,热处理后磁粉芯密度达到5.737...采用1100 MPa/100℃温压成形工艺,将水雾化Fe Si Al粉末制备成磁粉芯。分别研究热处理温度和时间对Fe Si Al磁粉芯性能的影响。结果表明:在1100 MPa/100℃温压成形条件下,采用630℃×1 h的热处理工艺时,热处理后磁粉芯密度达到5.737 g/cm^3;100 k Hz下相应的有效磁导率μe达到137.9;50 k Hz/50 m T下磁损耗Ps为12.63 W/kg。展开更多
SINCE the discovery of the giant magneto-impedance (GMI) effects in amorphous wire (or rib-bon) of CoFeSiB and nanocrystalline wire (or film) of FeCuNbSiB, it has attracted greatattention due to its promising potentia...SINCE the discovery of the giant magneto-impedance (GMI) effects in amorphous wire (or rib-bon) of CoFeSiB and nanocrystalline wire (or film) of FeCuNbSiB, it has attracted greatattention due to its promising potential applications in industry. Amorphous (and nanocrys-talline) soft magnetic alloys have very large magnetic permeability, when an ac driving currentand an external magnetic field (EMF) are applied, the EMF will damp the magnetic fluxchange caused by the ac driving current, thus the magnetic permeability will decrease; as a re-展开更多
文摘采用温压成形工艺将水雾化Fe Si Al粉末制备成磁粉芯;用X射线衍射对原始粉末和经过绝缘包覆及热处理的粉末进行物相分析;采用软磁交流测试仪测量磁粉芯的磁损耗;利用精密磁性元件分析仪测量样品的磁导率。混合不同质量分数的硬脂酸锌和聚乙二醇(PEG)作为温压润滑剂,并研究其对Fe Si Al磁粉芯性能的影响。结果表明,1 100 MPa/100℃的温压成形条件下,当硬脂酸锌和PEG质量比为2:3,添加温压润滑剂的质量分数为1.3%时,磁粉芯生坯密度达到最大值5.75 g/cm3,热处理后为5.74 g/cm3。660℃×1 h热处理后,100 k Hz下,相应的有效磁导率?e达到137.9;350 k Hz/50 m T下磁损耗Ps为81.78 W/kg。
文摘采用1100 MPa/100℃温压成形工艺,将水雾化Fe Si Al粉末制备成磁粉芯。分别研究热处理温度和时间对Fe Si Al磁粉芯性能的影响。结果表明:在1100 MPa/100℃温压成形条件下,采用630℃×1 h的热处理工艺时,热处理后磁粉芯密度达到5.737 g/cm^3;100 k Hz下相应的有效磁导率μe达到137.9;50 k Hz/50 m T下磁损耗Ps为12.63 W/kg。
基金Supported by National Natural Science Foundation of China(50271047)The Natural Science Foundation ofTianjin,as well as the"985"Program Foundation of Tianjin University(003601811)
文摘SINCE the discovery of the giant magneto-impedance (GMI) effects in amorphous wire (or rib-bon) of CoFeSiB and nanocrystalline wire (or film) of FeCuNbSiB, it has attracted greatattention due to its promising potential applications in industry. Amorphous (and nanocrys-talline) soft magnetic alloys have very large magnetic permeability, when an ac driving currentand an external magnetic field (EMF) are applied, the EMF will damp the magnetic fluxchange caused by the ac driving current, thus the magnetic permeability will decrease; as a re-
