包覆Ni-Co-P的钡铁氧体红外-微波一体化隐身材料制备与性能
Preparation of IR and Microwave Absorbing Barium Ferrite Material by Electroless Ni-Co-P Plating
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摘要: 为了使钡铁氧体粉末具有红外-微波多波段兼容的隐身性能,采用表面改性的方法在钡铁氧体表面进行Ni-Co-P复合化学镀。借助XRD、SEM、EDX、IR-2双波段发射率测量仪、矢量网络分析仪对包覆前后样品的结构、表面形貌、红外发射率、微波吸收性能进行了表征。结果表明,在钡铁氧体表面包覆的Ni-Co-P合金呈球状,包覆比较均匀;在钡铁氧体粒子上镍钴磷固熔体质量分数约为84.14%,其中镍为51.93%,钴为25.78%,磷为6.43%;镀后样品的红外发射率降至0.6160,对电磁波的反射率小于10dB的频带可达3.6GHz(在8～11.6GHz范围内)。本实验制备的钡铁氧体复合粒子有望成为一种极具发展潜力和工业价值的红外-微波一体化隐身材料。Abstract: In order to obtain IR and microwave absorption properties,Ni-Co-P coated barium ferrite powder was prepared by electroless plating.The structure,micrograph,IR emissivity and microwave absorption properties of samples were characterized by X-ray diffractometer（XRD）,scanning electron microscope（SEM）,Fourier transform infrared spectrometer（FT-IR） infrared emissivity measurement instrument and vector network analyzer.The results show that the Ni-Co-P coated barium ferrite powder was spherical.A uniform and compact coating on barium ferrite is obtained.The content of Ni-Co-P metal particles on the barium ferrite powder was 84.14%.The content of Ni was 51.93%.The content of Co was 25.78%.The content of P was 6.43%.IR emissivity of powder decreases to 0.6160,and the bandwidth（＜10dB） is about 3.6GHz at 8～11.6GHz.The Ni-Co-P coated barium ferrite will be integrated infrared-microwave stealth materials with developing potential and industrial value.
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