The effects of field annealing on the magnetic properties of FeSiB amorphous powder cores
The effects of field annealing on the magnetic properties of FeSiB amorphous powder cores
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场退火对FeSiB非晶磁粉芯磁性能的影响
DOI：
10.1016/j.materresbull.2017.04.030
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发表时间：
2017
影响因子：
5.4
通讯作者：
Wang Xin-Min
中科院分区：
文献类型：
--
作者：
Dong Yaqiang;Li Zichao;Liu Min;Chang Chuntao;Li Fushan;Wang Xin-Min
研究了横向磁场退火对Fe 78 Si 9 B13非晶磁粉芯磁性能的影响。在400 °C和0.5T的外磁场下退火的磁芯在高达2 MHz的高频范围内显示出增强的和稳定的有效磁导率90。同时，与零场退火相比，磁导率提高了约5%，铁损降低了约10%，这主要归因于内应力的消除和畴结构的变化。它还显示出优越的上级直流偏置性能，在100 Oe的外场下“磁导率百分比”为70%。横向磁场退火是提高非晶磁粉芯软磁性能的有效途径。铁基非晶磁粉芯软磁性能的提高对作为功能材料的应用前景是令人鼓舞的。
The effects of transverse magnetic field annealing on the magnetic properties of Fe78Si9B13amorphous powder cores were investigated. The cores annealed at 400 °C under an external transverse magnetic field of 0.5 T show an enhanced and stable effective permeability of 90 in the high frequency range up to 2 MHz. Meanwhile, the permeability was improved by about 5% and the core loss was decreased by about 10% compared to the core with zero field annealing, which is attributed to the relief of internal stress and the variation of domain structure. It also shows superior DC bias property with a “percent permeability” of 70% at an external field of 100 Oe. Transverse magnetic field annealing is an effective way to improve the soft magnetic properties of the amorphous powder cores. The improvement of soft magnetic properties of the Fe-based amorphous powder cores is encouraging for future applications as functional materials.