退火对玻璃包覆合金微丝磁性能的影响

Temperature Dependence of Magnetic Property for Glass-Coated Metal Microwires

研究了退火对玻璃包覆FeCuNbVSiB(Fe基)和CoNiFeSiB(Co基)合金微丝磁性能的影响。结果表明,Fe基和Co基玻璃包覆合金微丝的矫顽力都是随着退火温度的升高先降低后增高,矫顽力分别在470℃和360℃退火后达到最小值:154A/m和141A/m。随着Fe基微丝样品中Fe-B硬磁相的出现和Co基微丝样品中α-Co晶粒的出现,Fe基和Co基玻璃包覆合金微丝的矫顽力和饱和场都急剧增加。

The effect Of annealing process on the magnetic properties of glass-coated FeCuNbVSiB （Fe-based） and CoNiFeSiB （Co-based） microwires were investigated. The results show that the coercive fields of the Fe based and Co based microwires decreased first, then increased with the increase of annealing temperature, they were 154 A/m at 470 ℃ and 141 A/m at 360 ℃, respectively. The coercive field and saturation field of the microwire samples increased abruptly with the appearance and growth of the Fe-B hard magnetic phase in the Fe base microwire samples and the α-Co crystalline grain in the Co based microwire samples.