铁基合金Fe63Co20Ce13Al4吸波性能的研究

Research on microwave absorbing property of the Fe-based alloy Fe_(63)Co_(20)Ce_(13)Al_4

采用非自耗真空电弧熔炼与高能球磨相结合的方法制备出了Fe63Co20Ce13Al4合金粉末。借助X射线衍射仪(XRD)、扫描电镜(SEM)和网络矢量分析仪等,研究了球磨40、50、60和70h的Fe63Co20Ce13Al4合金粉末的相结构、形貌以及微波吸收性能。结果表明,随着球磨时间的增加,吸收峰向低频移动,吸收峰值减小,吸波频带变宽。球磨60h后的粉末扁平化效果较好,当吸波涂层厚度d=1.8mm时,在4.5GHz处最小吸收峰值到达-10.8dB。当吸波涂层厚度增加,吸收峰向低频移动,吸收峰值变大,吸波带宽变窄。

The powders were obtained by arc smelting and high energy ball milling method. The phase struc- ture, morphology, and microwave absorbing properties of the powder which milling different time （40, 50, 60, 70h） were researched by XRD, SEM and vector network analyzer. The results show that with increasing mill- ing time, the absorption peaks move to the low frequency, the value of absorption peaks decreases, and the ab- sorbing band widens. Powders after milling 60h obtain better flattened effect. When absorbing coating thick- ness d=1.8mm, the minimum absorption peak value was -10.8dB at 4.5GHz. With the absorbing coating thickness increasing, the absorption peaks shift to lower frequency, the value of absorption peaks increases, and the absorbing bandwidth narrowing.