利用自反应淬熄法制备了一种M型钡铁氧体空心陶瓷微珠材料,在此基础上,对其表面进行超声波化学镀Ni-Co复合层,从而形成了具有核/壳/腔结构的材料；通过扫描电子显微镜、能谱仪和X射线衍射仪分析表明,该材料具有中空结构,主要物相BaFe12O19为M型钡铁氧体,经过化学镀后,在其表面形成了一层Ni-Co复合层；经过吸波性能测试,化学镀Ni-Co复合层后,在2~18 GHz范围内,当厚度为2.10 mm时,最低反射率达到了-28.62 dB,反射率小于-10 dB的带宽为3.33 GHz。

The M-type barium ferrite hollow ceramic microsphere microwave absorption materials were prepared with self-reactive quenching method. The Ni-Co composite layers were plated on the surface of the materials by using ultrasonic chemical electroless plating method. The materials had the core-shell-hollow structure. From the SEM, EDS and XRD analyzsis, the results show that the materials have middle hollow structure and its phase BaFe12O19 is M-type barium ferrite. The surface of the materials was plated with Ni-Co composite layers by using chemical electroless plating. From the test of microwave absorption property, after chemical electroless plating its microwave absorption properties were raised. The lowest reflection rate was -28.62 dB and the band width less than -10 dB was 3.33 GHz in the frequency range of 2-18 GHz when the thickness was 2.10 mm.