将不同比例的Cr掺入FeSiAl合金中,经真空电弧熔炼、破碎、球磨制得合金粉。添加适量润滑剂和粘结剂,经冷压成型制得磁粉芯,并在933K退火1h。用振动样品磁强计检测合金粉的饱和磁化强度,用动态磁滞回线测试装置测试磁粉芯的功率损耗,用LCR测试有效磁导率。结果表明,当Cr含量低于6%时,随Cr含量升高,合金粉的饱和磁化强度升高;当Cr含量为6%时达到136.73emu/g;在Cr含量为6%时磁粉芯的损耗最小,为25.38 W/kg;随Cr含量的升高,磁导率减小。 Different proportions of Cr into FeSiAl alloy, the vacuum arc melting, crushing, ball milling obtained alloy powder. Add appropriate amount of lubricant and binder, obtained by cold forming magnetic powder core, and annealed at 933K 1h. The saturation magnetization of the alloy powder was measured with a vibrating sample magnetometer, the power loss of the powder core was measured with a dynamic hysteresis loop test device, and the effective permeability was measured by LCR. The results show that the saturation magnetization of the alloy powder increases with the increase of Cr content when the Cr content is less than 6%, reaches 136.73emu / g when the Cr content is 6%. When Cr content is 6% The minimum loss is 25.38 W / kg. With the increase of Cr content, the permeability decreases.