Fe-6.5%Si硅钢片交流磁性能的研究

Alternating current magnetic properties of Fe-6.5%Si steel sheets

对分别采用粉末轧制法和化学气相沉积法制备的Fe-6.5%Si硅钢片在交流磁场(Bm=0.2～1.0 T,f=50～5 000 Hz)下的铁损、矫顽力和振幅磁导率进行了研究,采用幂函数对测试数据进行拟合,比较其交流磁性能随磁感应强度和频率的变化趋势。结果表明,试样的矫顽力和铁损与磁感应强度的相关性均大于其与频率的相关性;Fe-6.5%Si硅钢片的交流磁化过程和性能与其本征特性密切相关;两类试样初始磁化过程的差异随着频率的提高而增大。

Core losses,coercivities and amplitude permeabilities of Fe-6.5%Si steel sheets prepared by direct powder rolling and chemical vapor deposition were determined from the measurements at alternating current fields,as functions of magnetic flux density（Bm = 0.2～1.0 T） and frequency（f=50～5 000 Hz）.The data of core losses and coercivities were fitted by a power law dependence of magnetic flux density and frequency.The results indicate that the magnetic flux density dependences of core loss and coercivity are more pronounced than frequency.The dynamic magnetization process and magnetic properties of Fe-6.5%Si steel sheets significantly depends on the intrinsic parameters.The difference of the initial magnetization processes of two samples increases with the frequency increasing.