摘要
通过水雾化法制备了Fe74Cr1Si9B10P4C2非晶合金粉末,该成分合金过冷液相区可达35K,具有良好的大块非晶形成能力,粒径在100μm左右的粉末依然为非晶态。同时该成分非晶合金还具有优异的软磁性能,其饱和磁感Bs可达1.3T,矫顽力Hc=4.6A/m。通过对非晶粉末表面进行钝化绝缘处理可极大提高非晶磁粉芯的高频特性,粉芯磁导率在10MHz左右依然保持稳定,同时磁心损耗也极大降低,在Bm=100mT,f=100kHz测试条件下,其损耗Pcv=592.9kW/m3。
The amorphous powder was prepared by water atomization. The corresponding supercooled region was 35 K. The good glass forming ability （GFA） resulted in the amorphous structure of the water-atomized powders with particle size of 100 μm. Besides, this amorphous alloy also indicated superior soft magnetic properties such as the saturation flux density Bs=1. 3 T, the coercivity He=4.6 A/m. The passivation of phosphoric acid on the surface of the amorphous alloy powder improved the high frequency properties of the powder cores. The amorphous powder cores exhibited stable permeability up to 10 MHz, while the core loss was drastically decreased to Pcv= 592.9 kW/m3 at Bm=100 mT,f=100 kHz.
出处
《粉末冶金工业》
CAS
北大核心
2013年第4期22-26,共5页
Powder Metallurgy Industry
关键词
非晶磁粉芯
水雾化
高频特性
amorphous powder core
water atomization
high-frequency properties
