摘要
采用扁平化工艺以及绝缘包覆工艺对铁硅铝系软磁合金粉末进行改性。对实验样品进行扫描电镜分析，观察颗粒形貌对材料性能的影响；探讨球磨时间以及不同绝缘介质含量对于材料电磁性能的影响规律。根据单层吸波材料（含导电衬底）对电磁波的反射率公式的分析以及对不同样品反射率的计算可知，球磨扁平化工艺以及绝缘包覆工艺可有效地改善铁硅铝金属粉末的微波吸收性能。经改性后的铁硅铝系软磁金属粉末在1．0～3．5GHz频段具有较好的吸波性能，可应用于抗电磁干扰领域。
By flattening the metallic materials and by means of a chemical coating method, the anti-electromagnetic interference characteristic of the Fe-Si-Al magnetic alloy powder can be improved. The influence of different flattening time and the different additive contents of insulative materials on electro-magnetic parameters of Fe-Si-Al magnetic alloy powders were discussed. The formulas of reflection coefficient of absorbing materials with conduction bases was analysed. The results shows that this materials can be used as absorbing materials on 1.0 - 3. 5 GHz.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2006年第3期524-529,共6页
The Chinese Journal of Nonferrous Metals
关键词
Fe-Si—Al系合金
扁平化处理
包覆工艺
反射系数
Fe-Si-Al magnetic alloy powders
flattening
chemical coating method
reflection coefficient
