熔体过热度对Fe_(78)Si_9B_(13)非晶条带磁性能的影响

Effect of melt superheating on magnetic properties of Fe_(78)Si_9B_(13) amorphous ribbon

为了研究合金熔体过热度和退火温度对Fe_(78)Si_9B_(13)非晶条带磁性能的影响,在180、200和230℃3个不同合金熔体过热度下利用单辊法制备了宽142 mm、厚23μm的非晶条带.在350~370℃范围内选取5个退火温度对非晶条带进行纵向磁场退火,并利用硅钢测试仪对退火后的非晶条带进行磁性能测试.结果表明,随着合金熔体过热度的增大,非晶条带的激磁功率和损耗均呈下降趋势.随着过热度和退火温度的降低,非晶条带的磁性能分布区间变窄,但其稳定性增强.适当提高过热度和热处理温度有助于获得具有最佳磁性能的非晶条带.

In order to determine the effect of melt superheating and annealing temperature on the magnetic properties of Fe78 Si9B13 amorphous ribbon, the amorphous ribbon with a width of 142 mm and a thickness of 23 μm were prepared with the melt-spun method at three different superheating temperatures of 180,200 and 230 ℃, respectively. The annealing treatment for the amorphous ribbon was performed in the longitudinal magnetic field environment at five different temperatures from 350 to 370 ℃, and the magnetic properties of the annealed amorphous ribbon were tested with the silicon steel measuring instrument. The results show that with increasing the melt superheating, the exciting power and core loss of amorphous ribbon tend to decrease. With decreasing the superheating and annealing temperature, the distribution region for the magnetic properties of amorphous ribbon becomes narrow while the magnetic stability of amorphous ribbon increases. It is helpful in obtaining the amorphous ribbon with the optimal magnetic properties to increase appropriately the superheating and heat treatment temperature.